Husqvarna GR41 User's Manual
Contents
1. Fit the right handle to the handlebar using the screw washer sleeve and nut as shown Tighten Put on the harness and hang the machine from the support hook Now make a final adjustment so that the machine is in a comfortable working position when it hangs from the harness Tighten the knob Transport position handlebar gt Biel The handlebar can easily be turned to fit along the shaft for easier transportation and storage Loosen the knob Turn the handlebar clockwise so thatthe throttle handle rests against the engine Now twist the handlebar around the shaft Tighten the knob Fit the transport guard to the cutting attachment English 13 ASSEMBLY Assembling the cutting equipment WARNING When fitting the cutting attachment it is extremely important that the raised section on the drive disc support flange engages correctly in the centre hole of the cutting Fit the support flange F on the output shaft Make sure that the blade is centered by fitting it to the guide on the support flange Screw the support cup E onto the output shaft threads CAUTION Left hand thread Tighten to a torque of 35 50 Nm 3 5 5 0 kpm Use the socket spanner in the tool kit Note that the locking pin C must remain inside the gear housing to lock the drive disk Hold the shaft of the socket spanner as close to the blade guard combination attachment If the cutting attachment is fitted i guard as p2. mr AVANT bs i fi e Do not allow the trimmer head to constantly come into contact with the ground during normal cutting Constant contact of this type can cause damage and wear to the trimmer head The fan effect of the rotating cord can be used for quick and easy clearing up Hold the cord parallel to and above the area to be swept and move the tool to and fro 4 L Y When cutting and sweeping you should use full throttle to obtain the best results English 25 MAINTENANCE Carburettor Your Jonsered product has been designed and manufactured to specifications that reduce harmful exhaust fumes The engine will be run in after it has used 8 10 tanks of fuel To ensure that the engine runs at peak performance and produces as little harmful exhaust fumes as possible after the running in period ask your dealer service workshop which has a rev counter for this purpose to adjust your carburettor WARNING The complete clutch cover and shaft must be fitted before the machine is started otherwise the clutch can come loose and cause personal injury Carburettor adjustment The carburettor can be designed in different ways depending on the existing environmental and emissions legislation Some machines are equipped with movement limiters on the carburettor s adjuster screws These limit the adjustment range to a maximum of 1 2 turn Function pol e The carburettor governs the engine s
3. Throttle lockout The throttle lockout is designed to prevent accidental operation of the throttle control When you press the lock A i e when you grasp the handle it releases the throttle control B When you release the handle the throttle control and the throttle lockout both move back to their original positions This movement is controlled by two independent return springs This arrangement means that the throttle control is automatically locked at the idle setting ZO N A SNA Make sure the throttle control is locked at the idle setting when the throttle lockout is released 8 English Press the throttle lockout and make sure it returns to its original position when you release it Check that the throttle control and throttle lockout move freely and that the return springs work properly See instructions under the heading Start Start the machine and apply full throttle Release the throttle and check that the cutting attachment stops and remains at a standstill If the cutting attachment rotates with the throttle in the idle position then the carburettor idle setting must be checked See instructions under the heading Maintenance Stop switch Use the stop switch to switch off the engine Start the engine and make sure the engine stops when you move the stop switch to the stop setting GENERAL SAFETY PRECAUTIONS Cutting attachment guard This guard is intended to prevent loose o
4. CAUTION If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti clockwise until the cutting attachment stops Rec idle speed 2700 rpm WARNING If the idle speed cannot be adjusted so that the cutting attachment stops contact your dealer service workshop Do not use the machine until it has been correctly adjusted or repaired CAUTION The machine should only be run for short periods at its highest speed For optimum adjustment of the carburettor contact a qualified dealer service workshop that has a revolution counter at their disposal Recommended max speed See the Technical data section During the running in period 8 10 tanks of fuel the maximum speed should be set 600 700 rpm below the recommended maximum speed open the high speed jet H a further 1 8 turn Conditions e Before any adjustments are made make sure that the air filter is clean and the air filter cover is fitted If you adjust the carburettor when the air filter is dirty it will result in a leaner mixture when the filter is finally cleaned This can lead to serious engine damage e Carefully turn both jets L and H so that they are midway between fully screwed in and fully screwed out e Do not attempt to adjust the L and H jets beyond either stop as this could cause damage e Now start the machine according to the starting instructions and let it warm up for 10 minutes CAUTION If
5. shows the area where you should operate the socket spanner when loosening or tightening the nut The nylon lining inside the locking nut must not be so worn that you can turn it by hand The lining should offer a resistance of at least 1 5 Nm The nut should be replaced after it has been put on approx 10 times Locking screw TAIS ACI The lock screw must be tightened securely for ball bearing mounted support cups GENERAL SAFETY PRECAUTIONS Cutting equipment This section describes how to choose and maintain your cutting equipment in order to e Reduce the risk of blade thrust e Obtain maximum cutting performance e Extend the life of cutting equipment IMPORTANT Only use cutting attachments with the guards we recommend See the chapter on Technical data Refer to the instructions for the cutting attachment to check the correct way to load the cord and the correct cord diameter Keep the teeth of the blade correctly sharpened Follow our recommendations Also refer to the instructions on the blade packaging Maintain the correct blade setting Follow our instructions and use the recommended file gauge WARNING Always stop the engine before doing any work on the cutting attachment This continues to rotate even after the throttle has been released Ensure that the cutting attachment has stopped completely and disconnect the HT lead from the spark plug before you start to work on it WARNING Using
6. an incorrect cutting attachment or an incorrectly sharpened blade increases the risk of blade thrust Cutting equipment Saw blades are intended for cutting fibrous types of wood o Grass blades and grass cutters are intended for cutting coarse grass 3 N WA har gt GN L A trimmer head is intended for trimming grass General rules Only use cutting attachments with the guards we recommendi See the chapter on Technical data N A C z gt E LL Keep the teeth of the blade correctly sharpened Follow our instructions and use the recommended file gauge An incorrectly sharpened or damaged blade increases the risk of accidents 4 y Keep the correct setting on the saw blade Follow our instructions and use the recommended setting tool An incorrectly set saw blade increases the risk of jamming and blade thrust and damage to the saw blade Check the cutting attachment for damage or cracks A damaged cutting attachment should always be replaced gt em Sharpening grass cutters and grass blades Fa ACI e See the cutting attachment packaging for correct sharpening instructions Sharpen blades and cutters using a single cut flat file e Sharpen all edges equally to maintain the balance of the blade WARNING Always discard a blade that is bent twisted cracked broken or damaged in any other way Never attempt to straighten a twist
7. and This is used to cut the cord to the correct length those in between to the left If the blade has been heavily pitted by stones it may be necessary to dress the top e To increase the life of the cord it can be soaked in water edges of the teeth with a flat file in exceptional cases If for a couple of days This will make the line tougher so that so this should be done before filing with a round file The it lasts longer top edges must be filed down by the same amount for all the teeth 12 English ASSEMBLY Assembling the handlebar and throttle GR41 GR50 ple Remove the screw at the rear of the throttle handle Slide the throttle handle onto the right side of the handlebar See diagram Align the screw hole in the throttle handle with the hole in the handlebar Refit the screw in the hole in the rear of the throttle handle Screw the screw through the handle and handlebar Tighten it Unscrew the knob from the handlebar mounting Position the handlebar as shown Fit the mounting components and tighten the knob lightly Put on the harness and hang the machine from the support hook Now make a final adjustment so that the machine is in a comfortable working position when it Tighten the knob Assembling the handlebar and throttle RS44 RS52 ple Unscrew the knob from the handlebar mounting Position the handlebar as shown Fit the mounting components and tighten the knob lightly
8. guard and trimmer head Trimmy SII Fitting other guards and cutting attachments Adjusting the harness and clearing Saw Standard harness marinado Vector PANS SS ien ini ti FUEL HANDLING Fuel safety cccoocccccccncccccnccconnnononnnononcnonancnonanononanenonanones Fuel IT PCAC ausstsan see een ee STARTING AND STOPPING Check before starting ccccccccccconocccononnconononononononanons Starting and Stopping occcccccncnnccccccnonononnnononnnonononnnanons WORKING TECHNIQUES General working instructions sssseeeeenennzennnzzzznnnnnznn MAINTENANCE Cal DUP SION serrat A teipadtanedsen Cooling SYSTEM seriada ai Air filter oocooccccoccccccncononccocnnconnnonnnnonnncnnnconnnnonnnnonnncnnnnnos A Spark plug A Maintenance schedule coccooncnccccccnccccccnnnnccconcnnnnnanoss TECHNICAL DATA Technical data usa EC declaration of conformity cccccccccccccoconcnnncnnnnnncnnnos 5 15 Note the following before starting Please read the operator s manual carefully WARNING Long term exposure to noise can result in permanent hearing impairment So always use approved hearing protection WARNING Under no circumstances may the design of the machine be modified without the permission of the manufacturer Always use genuine accessories Non authorized modifications and or accessories can result in serious personal injury or the death of the operator or others WARNI
9. impact or is cracked Check that the blade is correctly centred is sharp and is not cracked An off centre blade will cause vibration that could result in damage to the machine Check that the trimmer head is undamaged and not cracked Replace the trimmer head if necessary Check that the locking nut of the cutting equipment is tighten correctly Check that the locking screw is tightened when using a support cup with bearings Check that the transport guard for the blade is intact and that it can be secured correctly Check that nuts and screws are tight Check that there are no fuel leaks from the engine tank or fuel lines Check the starter and starter cord Check that the vibration damping elements are not damaged Clean the outside of the spark plug Remove it and check the electrode gap Adjust the gap to 0 5 mm or replace the spark plug Check that the spark plug is fitted with a suppressor Clean the machine s cooling system Clean or replace the spark arrestor mesh on the muffler only applies to mufflers without a catalytic converter Clean the outside of the carburettor and the space around it Check that the bevel gear is filled three quarters full with lubricant Fill if necessary using special grease Check that the safety release on the harness is not damaged and works Check the fuel filter from contamination and the fuel hose from cracks or other defects Replace if necessary Check all
10. machine overheating which causes damage to the piston and cylinder Air filter gt The air filter must be regularly cleaned to remove dust and dirt in order to avoid e Carburettor malfunctions e Starting problems e Loss of engine power e Unnecessary wear to engine parts e Excessive fuel consumption Clean the filter every 25 hours or more regularly if conditions are exceptionally dusty Cleaning the air filter Remove the air filter cover and take out the filter Wash it clean in warm soapy water Ensure that the filter is dry before refitting it An air filter that has been in use for a long time cannot be cleaned completely The filter must therefore be replaced with a new one at regular intervals A damaged air filter must always be replaced GR41 50 RS44 MAINTENANCE Bevel gear wel The bevel gear is filled with the right amount of grease at the factorv However before using the machine vou should check that the bevel gear is filled 3 4 full with grease Use JONSERED special grease The grease in the bevel gear does not normallv need to be changed except if repairs are carried out RS Spark plug slo The spark plug condition is influenced by e Incorrect carburettor adjustment e An incorrect fuel mixture too much or incorrect type of oil e A dirty air filter These factors cause deposits on the spark plug electrodes which may result in operating problems and starting di
11. or if you are taking medication that could affect your vision your judgement or your co ordination Wear personal protective equipment See instructions under the heading Personal protective equipment Never use a machine that has been modified in any way from its original specification Never use a machine that is faulty Carry out the checks maintenance and service instructions described in this manual Some maintenance and service measures must be carried out by trained and qualified specialists See instructions under the heading Maintenance All covers guards and handles must be fitted before starting Ensure that the spark plug cap and ignition lead are undamaged to avoid the risk of electric shock The machine operator must ensure that no people or animals come closer than 15 metres while working When several operators are working in the same area the safety distance should be at least twice the tree height and no less than 15 metres WARNING The ignition system of this machine produces an electromagnetic field during operation This field may under some circumstances interfere with pacemakers To reduce the risk of serious or fatal injury we recommend persons with pacemakers to consult their physician and the pacemaker manufacturer before operating this machine WARNING Running an engine in a confined or badly ventilated area can result in death due to asphyxiation or carbon monoxide poisoning Personal prote
12. speed via the throttle control Air and fuel are mixed in the carburettor The air fuel mixture is adjustable Correct adjustment is essential to get the best performance from the machine e Adjusting the carburettor means that the engine is adapted to local operating conditions e g climate altitude petrol and the type of 2 stroke oil e The carburettor has three adjustment controls L Low speed jet H High speed jet T Idle adjustment screw GR41 50 RS44 e The Land H jets are used to adjust the supply of fuel to match the rate that air is admitted which is controlled with the throttle If they are screwed clockwise the air fuel ratio becomes leaner less fuel and if they are turned anti clockwise the ratio becomes richer more fuel A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed e The T screw regulates the throttle setting at idle speed If the T screw is turned clockwise this gives a higher idle speed turning it anti clockwise gives a lower idle speed 26 English Basic setting e The basic carburettor settings are adjusted during testing at the factory The basic setting is richer than the optimal setting and should be maintained for the first few hours the machine is in use The carburettor should then be finely adjusted Fine adjustment should be carried out by a skilled technician The basic setting can vary between H 1 1 1 4 turns and L 1 1 1 4 turns
13. the 4 screws L and the support plate M as shown e Fit the drive disc B on the output shaft e Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing e Insert the locking pin C in the hole to lock the shaft e Screw on the trimmer head H in the opposite direction to the direction of rotation e Tighten the trimmer head to a torque of 35 50 Nm 3 5 5 kpm H e To dismantle follow the instructions in the reverse order Fitting other guards and cutting attachments als BEI e Fit the trimmer guard combination guard A intended for use with the trimmer head plastic blades Secure the trimmer guard using the 4 screws L and the support plate M as shown e Fit the drive disc B on the output shaft e Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing e Insert the locking pin C in the hole to lock the shaft e Screw on the trimmer head plastic blades H in the opposite direction to the direction of rotation e To dismantle follow the instructions in the reverse order English 15 ASSEMBLY Adjusting the harness and clearing saw WARNING When using a clearing saw it must always be hooked securely to the harness Otherwise you will be unable to control the clearing saw safely and this can result in injury to yourself or others Never use a harness
14. the start position by moving the choke control to the choke position and then returning it to its original position GR41 50 RS44 RS52 e Check that the trimmer head and trimmer guard are not damaged or cracked Replace the trimmer head or trimmer guard if they have been exposed to impact or are Y cracked e Never use the machine without a guard nor with a defective guard 20 English STARTING AND STOPPING Starting WARNING When the engine is started with the choke in either the choke or start throttle positions the cutting attachment will start to rotate immediately Hold the body of the machine on the ground using your left hand CAUTION Not with your foot Grip the starter handle slowly pull out the cord with your right hand until you feel some resistance the starter pawls grip now quickly and powerfully pull the cord Never twist the starter cord around your hand Repeat pulling the cord until the engine starts When the engine starts return choke control to run position and apply full throttle the throttle will automatically disengage from the start setting CAUTION Do not pull the starter cord all the way out and do not let go of the starter handle when the cord is fully extended This can damage the machine Stopping Stop the engine by switching off the ignition English 21 WORKING TECHNIQUES General working instructions IMPORTANT This
15. with a defective quick release Standard harness ple Safety release At the front is an easily accessible quick release Use this if the engine catches fire or in any other emergency situation that requires you to free yourself from the machine and harness Spreading the load on your shoulders A well adjusted harness and machine makes work much easier Adjust the harness for the best working position Tension the side straps so that the weight is evenly distributed across both shoulders Correct height 1 Forestry clearing The machine should be supported in a harness when forestry clearing so that the cutting equipment is angled slightly forwards in relation to the ground Adjust the height using the strap on the harness for the support hook 16 English 2 Grass clearing The machine should be supported in a harness when grass clearing so that the cutting equipment is parallel to the ground Vector harness ple Safety release Push down the red release lever to release the machine from the harness Adjusting the harness 1 Tighten the hip strap so that it sits securely 2 Tighten the chest strap under your left arm so that it fits closely around your body 3 Adjust the shoulder strap to distribute the load evenly across your shoulders Press downwards on the suspension hook to load the harness N I A ASSEMBLY 4 Adjust the height of the suspension hook as described i
16. Do not wear jewellery shorts sandals or go barefoot Secure hair so it is above shoulder level FIRST AID KIT Always have a first aid kit nearby A English 7 GENERAL SAFETY PRECAUTIONS Machine s safety equipment This section describes the machine s safety equipment its purpose and how checks and maintenance should be carried out to ensure that it operates correctly See the What is what section to locate where this equipment is positioned on your machine The life span of the machine can be reduced and the risk of accidents can increase if machine maintenance is not carried out correctly and if service and or repairs are not carried out professionally If you need further information please contact your nearest service workshop IMPORTANT All servicing and repair work on the machine requires special training This is especially true of the machine s safety equipment lf your machine fails any of the checks described below you must contact your service agent When you buy any of our products we guarantee the availability of professional repairs and service If the retailer who sells your machine is not a servicing dealer ask him for the address of your nearest service agent WARNING Never use a machine with faulty safety equipment The machine s safety equipment must be checked and maintained as described in this section If your machine fails any of these checks contact your service agent to get it repaired
17. NG A clearing saw brushcutter or trimmer can be dangerous if used incorrectly or carelessly and can cause serious or fatal injury to the operator or others It is extremely important that you read and understand the contents of this operator s manual English 3 INTRODUCTION Dear Customer Congratulations on your choice to buy a Jonsered product We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very long time to come The purchase of one of our products gives you access to professional help with repairs and service whenever this may be necessary If the retailer who sells your machine is not one of our authorised dealers ask for the address of your nearest service workshop It is our wish that you will be satisfied with your product and that it will be your companion for a long time Think of this operator s manual as a valuable document By following its content using service maintenance etc the life span and the second hand value of the machine can be extended If you will sell this machine make sure that the buyer will get the operator s manual Good luck on using your Jonsered machine Jonsered has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice 4 English WHAT IS WHAT What is what on the clearing saw GR41 GR50 RS44 Blade Grease fi
18. NS By jati Please read the operators manual carefully and make sure vou understand the instructions before using the machine KEY TO SYMBOLS Symbols WARNING Clearing saws brushcutters and trimmers can be dangerous Careless or incorrect use can result in serious or fatal injury to the operator or others It is extremely important that you read and understand the contents of the operator s manual Please read the operator s manual carefully and make sure you understand the instructions before using the machine E Always wear e A protective helmet where there is a risk of falling objects e Approved hearing protection e Approved eye protection Max speed of output shaft rpm max 10500 rpm CE sy This product is in accordance with applicable EC directives Watch out for thrown objects and ricochets The operator of the machine must ensure while working that no persons or animals come closer than 15 metres Machines fitted with saw blades or grass blades can be thrown violently to the side when the blade comes into contact with a fixed object This is called blade thrust The blade is capable of amputating an arm or leg Always keep people and animals at least 15 metres from the machine Always wear approved protective gloves Wear sturdy non slip boots Only use non metallic flexible cutting attachments i e trimmer heads with trimmer cord 2 English Noise emission to the env
19. Sound power level measured dB A Sound power level guaranteed Lwa dB A Sound levels see note 2 Equivalent noise pressure level at the operator s ear measured according to EN ISO 11806 and ISO 7917 dB A min max Vibration levels Vibration levels at handles measured according to EN ISO 11806 and ISO 7916 m s At idle left right handles min At idle left right handles max At max speed left right handles min At max speed left right handles max RS44 44 3 42 0 32 2 00 13500 10500 2 0 9000 No EM ET NGK BPMR 7A Champion RCJ 7Y 0 5 Zama C1Q 0 8 8 4 112 114 100 103 2 0 2 3 5 3 5 3 3 3 3 4 8 5 4 RS52 50 8 45 32 2700 13500 10500 2 4 9600 No EM ET NGK BPMR 7A Champion RCJ 7Y 0 5 Walbro HDA 0 75 9 1 112 114 98 104 3 4 4 0 3 4 4 0 1 4 3 0 5 8 7 4 Note 1 Noise emissions in the environment measured as sound power Lwa in conformity with EC directive 2000 14 EC Note 2 Equivalent sound pressure level is calculated as the time weighted energy total for sound pressure levels under various working conditions with the following time distribution 1 2 idling and 1 2 max speed NOTE The noise pressure level at operator s ear and vibrations on the handles are measured with all the approved cutting attachments for the machine The table indicates the lowest and highest values 32 English TECHNICAL DATA GR41 GR50 Approv
20. bjects from being thrown towards the operator The guard also protects the operator from accidental contact with the cutting attachment Check that the guard is undamaged and not cracked Replace the guard if it has been exposed to impact or is cracked Always use the recommended guard for the cutting attachment you are using See chapter on Technical data WARNING Never use a cutting attachment without an approved guard See the chapter on Technical data If an incorrect or faulty guard is fitted this can cause serious personal injury Vibration damping system Your machine is equipped with a vibration damping system that is designed to minimize vibration and make operation easier Use of incorrectly wound cord or an incorrect cutting attachment increases the level of vibration See instructions under the heading Cutting equipment The machine s vibration damping system reduces the transfer of vibration between the engine unit cutting equipment and the machine s handle unit Regularly check the vibration damping units for cracks or deformation Check that the vibration damping element is undamaged and securely attached WARNING Overexposure to vibration can lead to circulatory damage or nerve damage in people who have impaired circulation Contact your doctor if you experience symptoms of overexposure to vibration Such symptoms include numbness loss of feeling tingling pricking pain loss of streng
21. cables and connections Check the clutch clutch springs and the clutch drum for wear Replace if necessary by an autorized service workshop Replace the spark plug Check that the spark plug is fitted with a suppressor Check and clean the spark arrestor mesh on the muffler only applies to mufflers fitted with a catalytic converter RS52 Lubricate the drive shaft with the special grease Do this every three months 30 English TECHNICAL DATA Technical data Technical data Engine Cylinder displacement cm Cylinder bore mm Stroke mm Idle speed rpm Recommended max speed rpm Speed of output shaft rpm Max engine output acc to ISO 8893 Catalytic converter muffler Ignition system Manufacturer type of ignition system Spark plug Electrode gap mm Fuel and lubrication system Manufacturer type of carburettor Fuel tank capacity litre Weight Weight without fuel cutting attachment and guard kg Noise emissions see note 1 Sound power level measured dB A Sound power level guaranteed Lwa dB A Sound levels see note 2 Equivalent noise pressure level at the operator s ear measured according to EN ISO 11806 and ISO 7917 dB A min max Vibration levels Vibration levels at handles measured according to EN ISO 11806 and ISO 7916 m s At idle left right handles min At idle left right handles max At max speed left right handles min At max speed left right handles
22. cial spark arrestor mesh If your machine has this type of muffler you should clean the mesh at least once a week This is best done with a wire brush On mufflers without a catalytic converter the mesh should be cleaned weekly or replaced if necessary On mufflers fitted with a catalytic converter the mesh should be checked and if necessary cleaned monthly If the mesh is damaged it should be replaced If the mesh is frequently blocked this can be a sign that the performance of the catalytic converter is impaired Contact your dealer to inspect the muffler A blocked mesh will cause the machine to overheat and result in damage to the cylinder and piston GR41 50 RS44 RS52 CAUTION Never use a machine with a defective muffler WARNING Mufflers fitted with catalytic converters get very hot during use and remain so for some time after stopping This also applies at idle speed Contact can result in burns to the skin Remember the risk of fire 28 English Cooling system To keep the working temperature as low as possible the machine is equipped with a cooling system GR41 50 RS44 RS52 The cooling system consists of 1 Air intake on the starter 2 Fins on the flywheel 3 Cooling fins on the cylinder 4 Cylinder cover directs cold air over the cylinder Clean the cooling system with a brush once a week more often in demanding conditions A dirty or blocked cooling system results in the
23. ctive equipment IMPORTANT A clearing saw brushcutter or trimmer can be dangerous if used incorrectly or carelessly and can cause serious or fatal injury to the operator or others It is extremely important that you read and understand the contents of this operator s manual You must use approved personal protective equipment whenever you use the machine Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen Ask your dealer for help in choosing the right equipment WARNING Listen out for warning signals or shouts when you are wearing hearing protection Always remove your hearing protection as soon as the engine stops HELMET A helmet should be worn if the trees being cleared are taller than 2 m A oe aa DS HEARING PROTECTION Wear hearing protection that provides adequate noise reduction EYE PROTECTION Always wear approved eye protection If you use a visor then you must also wear approved protective goggles Approved protective goggles must comply with standard ANSI Z87 1 in the USA or EN 166 in EU countries GLOVES Gloves should be worn when necessary e g when fitting cutting attachments BOOTS Wear boots with steel toe caps and non slip sole CLOTHING Wear clothes made of a strong fabric and avoid loose clothing that can catch on twigs and branches Always wear heavy long pants
24. e from electrical machinery electric motors electrical relays switches or boilers e When storing and transporting fuel always use approved containers intended for this purpose e When storing the machine for long periods the fuel tank must be emptied Contact your local petrol station to find out where to dispose of excess fuel e Ensure the machine is cleaned and that a complete service is carried out before long term storage e The transport guard must always be fitted to the cutting attachment when the machine is being transported or in storage WARNING Take care when handling fuel Bear in mind the risk of fire explosion and inhaling fumes Fuel CAUTION The machine is equipped with a two stroke engine and must always been run using a mixture of petrol and two stroke engine oil It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained When mixing small amounts of fuel even small inaccuracies can drastically affect the ratio of the mixture WARNING Fuel and fuel fumes are highly inflammable and can cause serious injury when inhaled or allowed to come in contact with the skin For this reason observe caution when handling fuel and make sure there is adequate ventilation 18 English Petrol gt AE CAUTION Always use a quality petrol oil mixture at least 90 octane RON If your machine is equipped with a catalytic converter see chapte
25. ed accessories Cutting attachment guard Art no Centre hole in blades cutters 0 20 mm Output shaft thread M12 DEE Multi 255 3 255 3 teeth 502 26 34 03 Grass 275 4 275 4 teeth 502 26 34 03 Grass blade grass cutter Multi 275 4 275 4 teeth 502 26 34 03 Multi 300 3 300 3 teeth 502 26 34 03 Opti XS 200 22 200 22 teeth 502 27 22 01 Saw blade Opti XS 225 22 225 22 teeth 502 03 94 05 Plastic blades Polytrim 300 503 91 60 03 502 26 34 03 Trimmy S ll 503 91 60 03 Trimmer head Auto 55 503 91 60 03 Tap N Go 45 503 91 60 03 zz ms upport cu iu wih bal bear od RS44 RS52 Approved accessories Cutting attachment guard Art no Centre hole in blades cutters Y 20 mm Output shaft thread M12 Multi 255 3 255 3 teeth 502 26 34 03 Grass blade grass cutter Multi 300 3 300 3 teeth 502 26 34 03 Opti XS 200 22 0 200 22 teeth 502 27 22 01 Saw blade Opti XS 225 22 225 22 teeth 502 03 94 05 502 08 9405 O VLLT O o EC declaration of conformity Applies to Europe only We Jonsered SE 561 82 Huskvarna Sweden tel 46 36 146500 declare that the clearing saws Jonsered GR41 GR50 RS44 and RS52 with serial numbers dating from 2002 onwards the year is clearly stated on the rating plate followed by the serial number comply with the requirements of the COUNCILS DIRECTIVE of June 22 1998 relating to machinery 98 37 EC annex IIA Of May 3 1989 relating to electromagnetic compatibi
26. ed blade so that it can be reused Only use original blades of the specified type English 11 GENERAL SAFETY PRECAUTIONS Sharpening the saw blade Trimmer head Te TO RW IMPORTANT Always ensure the trimmer cord is wound tightly and evenly e See the cutting attachment packaging for correct kan around the drum otherwise the machine will generate sharpening instructions harmful vibration A correctly sharpened blade is essential for working efficiently and to avoid unnecessary wear to the blade and clearing saw e Only use the recommended trimmer heads and trimmer cords These have been tested by the manufacturer to suit a particular engine size This is especially important when a fully automatic trimmer head is used Only use the recommended cutting attachment See the chapter on Technical data Z _ gt I e Smaller machines generally require small trimmer heads and vice versa This is because when clearing using a cord the engine must throw out the cord radially from the e Make sure that the blade is well supported when you file trimmer head and overcome the resistance of the grass it Use a 5 5 mm round file with a file holder being cleared e The length of the cord is also important A longer cord D requires greater engine power than a shorter cord of the same diameter e Make sure that the cutter on the trimmer guard is intact e The filing angle is 15 File alternate teeth to the right
27. f the blade between 3 o clock and 5 o clock Apply full throttle before advancing the blade e To fell to the right the bottom of the tree should be pushed to the left Tilt the blade and bring it diagonally up to the right Cut with the area of the blade between 3 o clock and 5 o clock so that the direction of rotation of the blade pushes the bottom of the tree to the left English 23 WORKING TECHNIQUES To fell a tree forwards the bottom of the tree should be pulled backwards Pull the blade backwards with a quick firm movement Large stems must be cut from two sides First determine which direction the stem will fall Make the first cut on the felling side Then finish cutting the stem from the other side Adjust the cutting pressure to match the size of the stem and the hardness of the wood Small stems require more pressure while large stems require less pressure l nd Mos If the stems are tightly packed adapt your walking pace to Suit If the blade jams in a stem never jerk the machine free If you do this the blade bevel gear shaft or handlebar may be damaged Release the handles grip the shaft with both hands and gently pull the machine free Brush cutting with a saw blade CNT Q 2 Thin stems and brush are mown down Work with a sawing movement swinging sideways Try to cut several stems in a single sawing movement With groups of hardwood stems first clear arou
28. fficulties If the machine is low on power difficult to start or runs poorly at idle speed always check the spark plug first before taking any further action If the spark plug is dirty clean it and check that the electrode gap is 0 5 mm The spark plug should be replaced after about a month in operation or earlier if necessary 0 5 mm f CAUTION Always use the recommended spark plug type Use of the wrong spark plug can damage the piston cylinder Check that the spark plug is fitted with a suppressor English 29 MAINTENANCE Maintenance schedule The following is a list of the maintenance that must be performed on the machine Most of the items are described in the Maintenance section The user must only carry out the maintenance and service work described in this Operator s Manual More extensive work must be carried out by an authorised service workshop Daily maintenance Weekly maintenance Maintenance Monthly maintenance Clean the outside of the machine Check that the harness is not damaged Make sure the throttle trigger lock and the throttle function correctly from a Safety point of view Check that the handle and handlebar are undamaged and secured correctly Check that the stop switch works correctly Check that the cutting attachment does not rotate at idle Clean the air filter Replace if necessary Check that the guard is undamaged and not cracked Replace the guard if it has been exposed to
29. in its stop position no further adjustment is necessary Turn the H needle slowly clockwise until the engine runs absolutely smoothly Burbling has stopped completely Now screw the H needle anti clockwise a few tenths of a turn el e l e CAUTIONI For optimum adjustment of the carburettor contact a qualified dealer service workshop that has a revolution counter at their disposal Correctiv adjusted carburettor When the carburettor is correctly adjusted the machine will accelerate without hesitation and burble a little at maximum speed lt is also important that the cutting attachment does not rotate at idle If the low speed jet L is set too lean it may cause starting difficulties and poor acceleration If the high speed jet H is set too lean it will result in less power less performance poor acceleration and or damage to the engine If both the L and H jets are set too rich it will results in acceleration problems or too low a working speed English 27 MAINTENANCE Muffler CAUTION Some mufflers are fitted with a catalytic converter See chapter on Technical data to see whether your machine is fitted with a catalytic converter The muffler is designed to reduce the noise level and to direct the exhaust gases away from the operator The exhaust gases are hot and can contain sparks which may cause fire if directed against dry and combustible material Some mufflers are equipped with a spe
30. ing a tree that is in tension A tree that is in tension may spring back to its normal position before or after being cut If you position yourself incorrectly or make the cut in the wrong place the tree may hit you or the machine and cause you to lose control Both situations can cause serious personal injury 22 English 6 Keep a good balance and a firm foothold 7 Always hold the machine with both hands Hold the machine on the right side of your body 8 Keep the cutting attachment below waist level 9 Switch off the engine before moving to another area Fit the transport guard before carrying or transporting the equipment any distance 10 Never put the machine down with the engine running unless you have it in clear sight The ABC of clearing Always use the correct equipment Make sure the equipment is well adjusted Follow the safety precautions Organise your work carefully Always use full throttle when starting to cut with the blade Always use sharp blades Avoid stones Control the felling direction take advantage of the wind WARNING Neither the operator of the machine nor anyone else may attempt to remove the cut material while the engine is running or the cutting equipment is rotating as this can result in serious injury Stop the engine and cutting equipment before you remove material that has wound around the blade shaft as otherwise there is a risk of injury The bevel gear can get ho
31. ironment Ta according to the European Community s Directive The machine s emission is specified in chapter Technical data and on dB label Other symbols decals on the machine refer to special certification requirements for certain markets Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance Always wear approved protective gloves Regular cleaning is required Visual check Approved eye protection must always be used CONTENTS Contents KEYTO SYMBOLS Sn ee ee CONTENTS 016 pija L Note the following before starting INTRODUCTION Dear Customer uanunnssnnssnnnennnennnnnnnnnn nennen nennen nennen WHAT ISWHAT What is what on the clearing saw GR41 GR50 RS44 WHAT IS WHAT What is what on the clearing saw RS52 GENERAL SAFETY PRECAUTIONS AEE AE La A Personal protective equipment ooccccccccccccncnconnnoconcnnos Machine s safety equipment ccccccoccnccccncccnconnnnnnnnanoos Cutting equipment secret ASSEMBLY Assembling the handlebar and throttle Assembling the handlebar and throttle Transport position handlebar uu Assembling the cutting equipment usee een Fitting a blade guard grass blade and grass cutter Fitting the blade guard and saw blade Fitting the trimmer
32. lity 89 336 EEC and applicable supplements of May 8 2000 relating to the noise emissions in the environment 2000 14 EC Conformity assessment according to Annex V For information relating to noise emissions see the chapter Technical data The following standards have been applied EN292 2 CISPR 12 1997 EN608 SMP Svensk Maskinprovning AB Fyrisborgsgatan 3 SE 754 50 Uppsala Sweden has carried out voluntary type approval for Husqvarna AB The certificates have the numbers SEC 94 063 01 164 023 GR41 SEC 94 061 01 164 024 GR50 SEC 94 062 01 164 025 RS44 SEC 99 657 01 164 025 RS52 Huskvarna January 3 2002 ham Bo Andr asson Development manager English 33 E 4 lt P oly Trim Trimmy SII LLI Trimmy SII 15 cm 6 Auto 55 2 7 mm 9 0 m 3 0 mm 7 5 m 3 3 mm 6 0 m Tap n Go 45 1150811 26 IO 2007002
33. llect the cut material WORKING TECHNIQUES Grass trimming with a trimmer head Sweeping Trimming e Hold the trimmer head just above the ground at an angle It is the end of the cord that does the work Let the cord work at its own pace Never press the cord into the area to be cut Wh e The cord can easily remove grass and weeds up against walls fences trees and borders however it can also damage sensitive bark on trees and bushes and damage fence posts ki AM MANNY e Reduce the risk of damaging plants by shortening the cord to 10 12 cm and reducing the engine speed Clearing e The clearing technique removes all unwanted vegetation Keep the trimmer head just above the ground and tilt it Let the end of the cord strike the ground around trees posts statues and the like CAUTION This technique increases the wear on the cord e The cord wears quicker and must be fed forward more often when working against stones brick concrete metal fences etc than when coming into contact with trees and wooden fences e When trimming and clearing you should use less than full throttle so that the cord lasts longer and to reduce the wear on the trimmer head Cutting e The trimmer is ideal for cutting grass that is difficult to reach using a normal lawn mower Keep the cord parallel to the ground when cutting Avoid pressing the trimmer head against the ground as this can ruin the lawn and damage the tool W Y
34. ller cap bevel gear Bevel gear Cutting attachment guard Shaft Handlebar Throttle control Stop switch oO O N O Oo A OO N Throttle lockout 10 Support eyes for harness 11 Cylinder cover 12 Starter handle 13 Fuel tank 14 Choke control 15 Handle adjustment 16 Harness 17 Locking nut 18 Support flange 19 Support cup 20 Drive disc 21 Trimmer head 22 Socket spanner 23 Operator s manual 24 Transport guard 25 Allen key 26 Carburettor screwdriver 27 Locking pin 28 Gearbox grease English 5 WHAT IS WHAT RSS What is what on the clearing saw RS52 1 Blade 15 Fuel tank 2 Grease filler cap bevel gear 16 Socket spanner 3 Bevel gear 17 Handle adjustment 4 Cutting attachment guard 18 Locking nut 5 Shaft 19 Support flange 6 Handlebar 20 Drive disc 7 Throttle control 21 Transport guard 8 Stop switch 22 Harness 9 Throttle lockout 23 Operator s manual 10 Support eyes for harness 24 Allen key 11 Cylinder cover 25 Locking pin 12 Starter handle 26 Gearbox grease 13 Choke control 27 Carburettor screwdriver 14 Air filter 6 English GENERAL SAFETY PRECAUTIONS Important IMPORTANT The machine is only designed for trimming grass grass clearing and or forestry clearing The only accessories you can operate with this engine unit are the cutting attachments we recommend in the chapter on Technical data Never use the machine if you are tired if you have drunk alcohol
35. max GR41 40 2 40 0 32 2700 13500 10500 1 8 9000 No EM ET NGK BPMR 7A Champion RCJ 7Y 0 5 Zama C1Q 0 8 8 6 114 114 101 104 2 142 1 2 8 2 8 2 4 2 9 3 5 4 0 GR50 48 7 44 0 32 2700 13500 10500 2 1 9000 No EM ET NGK BPMR 7A Champion RCJ 7Y 0 5 Zama C1Q 0 8 8 6 115 116 101 104 2 2 8 3 3 8 1 9 1 9 5 4 4 3 Note 1 Noise emissions in the environment measured as sound power Lwa in conformity with EC directive 2000 14 EC Note 2 Equivalent sound pressure level is calculated as the time weighted energy total for sound pressure levels under various working conditions with the following time distribution 1 2 idling and 1 2 max speed NOTE The noise pressure level at operator s ear and vibrations on the handles are measured with all the approved cutting attachments for the machine The table indicates the lowest and highest values English 31 TECHNICAL DATA Technical data Engine Cylinder displacement cm Cylinder bore mm Stroke mm Idle speed rom Recommended max speed rom Speed of output shaft rom Max engine output acc to ISO 8893 Catalytic converter muffler Ignition system Manufacturer type of ignition system Spark plug Electrode gap mm Fuel and lubrication system Manufacturer type of carburettor Fuel tank capacity litre Weight Weight without fuel cutting attachment and guard kg Noise emissions see note 1
36. n the instructions for the standard harness Forestry clearing If you need to lower the suspension hook for trimming for example move the suspension strap A to the lower mounting point on the backplate The elastic strap B can be tightened to transfer more load from the shoulder straps to the hip strap Correct balance 1 Forestry clearing The machine is balanced by moving the suspension ring on the machine forwards or backwards On some models the suspension ring is fixed however this will then have a number of holes for the support hook The machine is correctly balanced when it freely hangs horizontally from the support hook In this way the risk of hitting stones is reduced if you need to release the handlebar Grass clearing Let the blade balance at a comfortable cutting height i e close to the ground English 17 FUEL HANDLING Fuel safety Never start the machine 1 If you have spilt fuel on it Wipe off the spillage and allow remaining fuel to evaporate 2 If you have spilt fuel on yourself or your clothes change your clothes Wash any part of your body that has come in contact with fuel Use soap and water 3 If the machine is leaking fuel Check regularly for leaks from the fuel cap and fuel lines Transport and storage e Store and transport the machine and fuel so that there is no risk of any leakage or fumes coming into contact with sparks or naked flames for exampl
37. nd the group Start by cutting the stems high up around the outside of the group to avoid jamming Then cut the stems to the required height Now try to reach in with the blade 24 English and cut from the centre of the group If it is still difficult to gain access cut the stems high up and let them fall This will reduce the risk of jamming Grass clearing using a grass blade I e Grass blades and grass cutters must not be used on woody stems e A grass blade is used for all types of tall or coarse grass e The grass is cut down with a sideways swinging movement where the movement from right to left is the clearing stroke and the movement from left to right is the return stroke Let the left hand side of the blade between 8 and 12 o clock do the cutting e If the blade is angled to the left when clearing grass the grass will collect in a line which makes it easier to collect e g by raking e Try to work rhythmically Stand firmly with your feet apart Move forward after the return stroke and stand firmly again e Let the support cup rest lightly against the ground It is used to protect the blade from hitting the ground e Reduce the risk of material wrapping around the blade by following these instructions 1 Always work at full throttle 2 Avoid the previously cut material during the return stroke e Stop the engine unclip the harness and place the machine on the ground before you start to co
38. ocking pin C in the hole to lock the shaft e Place the blade D on the output shaft e Fit the drive disc B on the output shaft e Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing e Insert the locking pin C in the hole to lock the shaft e Place the blade D and support flange F on the output shaft e Fit the nut G The nut must be tightened to a torque of 35 50 Nm 3 5 5 kpm Use the socket spanner in the tool kit Hold the shaft of the spanner as close to the blade 14 English ASSEMBLY guard as possible To tighten the nut turn the spanner in the opposite direction to the direction of rotation Caution left hand thread When loosening and tightening the saw blade nut there is a risk of injury from the teeth of the saw blade You should therefore always ensure that your hand is shielded by the blade guard when doing this Always use a socket spanner with a shaft that is long enough to allow this The arrow in the diagram shows the area where you should operate the socket spanner when loosening or tightening the nut Fitting the trimmer guard and trimmer head Trimmy SII CAUTION Ifthe machine is to be used with a trimmer head the fast idle speed must be reduced by 400 500 rpm See instructions under the heading Carburettor e Fit the correct trimmer guard A for use with the trimmer head Secure the trimmer guard using
39. oo high and cause engine damage Do not let the engine run at full speed for more than 10 seconds Apply full throttle and turn the high speed jet H very slowly clockwise until the engine slows down Then turn the high speed jet H very slowly anticlockwise until the engine starts to run unevenly Now turn the high speed jet H slowly clockwise a little wav until the engine runs smoothiv j Para e Note that the engine should not be under load when you adjust the high speed jet H You should therefore remove the cutting attachment nut support flange and drive disc before adjusting the high speed jet H The high speed jet H is adjusted correctly when the machine burbles a little If the machine races then the setting is too lean If the engine produces a lot of smoke and burbles a lot then the setting is too rich CAUTION For optimum adjustment of the carburettor contact a qualified dealer service workshop that has a revolution counter at their disposal High speed jet H RS52 The high speed jet H affects the engine power speed temperature and fuel consumption If the high speed jet H is set too lean screwed in too far the engine speed will be too high and cause engine damage Do not let the engine run at full speed for more than 10 seconds Setting procedure without a load Blade can be used The machine is equipped with speed control in the ignition system lt is extremely important to be aware of this
40. ossible incorrectly it can result in serious and or fatal personal injury WARNING Never use a cutting attachment without an approved guard See the chapter on Technical data If an incorrect or faulty guard is fitted this can cause serious personal injury WARNING Tighten the lock screw N in the center hole of the support cup Tighten to a torque of 35 50 Nm 3 5 5 0 kom CAUTION Left hand thread If the lock screw is not fitted in the support cup there is a risk that the support cup will come unscrewed This means that the blade will also come loose which could result in serious or fatal injury to the operator or others IMPORTANT If a saw blade or grass blade are to be used the machine must be equipped with the correct handlebar blade guard and harness Fitting the blade guard and saw Fitting a blade guard grass blade blade and grass cutter ple e The blade guard A is fitted using 4 screws L as shown e The blade guard A is fitted using 4 screws L and the support plate M as shown CAUTION Always use the recommended guard for the cutting attachment you are using See chapter on CAUTION Always use the recommended guard for the Technical data cutting attachment you are using See chapter on L Technical data e Fit the drive disc B on the output shaft e Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing e Insert the l
41. over and common reason why cracks are formed is that sharp shaft must be fitted before the machine is corners have been formed at the bottom of the teeth while started otherwise the clutch can come loose sharpening or that the blade has been used with dull and cause personal injury teeth Discard a blade if cracks are found Always move the machine away from the refuelling area before starting Place the er machine on a flat surface Ensure the cutting au gt attachment cannot come into contact with O any object mu Make sure no unauthorised persons are in l l the working area otherwise there is a risk of e Check that the support flange is not cracked due to fatigue serious personal injury The safety distance or due to being tightened too much Discard the support is 15 metres flange if it is cracked Cold engine gt Ignition ED Set the stop switch to the start position Choke Set the choke control in the choke position e Ensure the locking nut has not lost its captive force The GR41 50 RS44 RS52 nut lock should have a locking force of at least 1 5 Nm The tightening torque of the locking nut should be 35 50 ak NA e Check that the blade guard is not damaged or cracked Replace the blade guard if it is exposed to impact or is Warm engine cracked lA Use the same starting procedure as for a cold engine but without setting the choke control in the choke position Set the throttle to
42. r on Technical data always use a good quality unleaded petrol oil mixture Leaded petrol will destroy the catalytic converter Use low emission petrol also known as alkylate petrol if it is available e The lowest octane recommended is 90 RON If you run the engine on a lower octane grade than 90 so called knocking can occur This gives rise to a high engine temperature which can result in serious engine damage e When working at continuous high revs a higher octane rating is recommended Two stroke oil e For best results and performance use JONSERED two stroke engine oil which is specially formulated for our air cooled two stroke engines e Never use two stroke oil intended for water cooled engines sometimes referred to as outboard oil rated TCW e Never use oil intended for four stroke engines e A poor oil quality and or too high oil fuel ratio may jeopardise function and decrease the life time of catalytic converters e Mixing ratio 1 50 2 with JONSERED two stroke oil 1 33 3 with oils class JASO FB or ISO EGB formulated for air cooled two stroke engines l Two stroke oil litre Petrol litre 2 1 50 3 1 33 ow po w a e FUEL HANDLING Mixing Fuelling e Al ili ineri ways mix the petrol and oil in a clean container intended for fuel gt e e Always start by filling half the amount of the petrol to be used Then add the entire amount of oil Mix shake the fuel mixt
43. section describes the basic safety precautions for working with clearing saws and trimmers If you encounter a situation where you are uncertain how to proceed you should ask an expert Contact your dealer or your service workshop Avoid all usage which you consider to be beyond your capability You must understand the difference between forestry clearing grass clearing and grass trimming before use Basic safety rules 1 Look around you To ensure that people animals or other things cannot affect your control of the machine To ensure that people animals etc do not come into contact with the cutting attachment or loose objects that are thrown out by the cutting attachment CAUTION Do not use the machine unless you are able to call for help in the event of an accident Inspect the working area Remove all loose objects such as stones broken glass nails steel wire string etc that could be thrown out or become wrapped around the cutting attachment Do not use the machine in bad weather such as dense fog heavy rain strong wind intense cold etc Working in bad weather is tiring and often brings added risks such as icv ground unpredictable felling direction etc Make sure you can move and stand safely Check the area around you for possible obstacles roots rocks branches ditches etc in case you have to move suddenly Take great care when working on sloping ground Take great care when cutt
44. t during use and may remain so for a while afterwards You could get burnt if you touch it WARNING Watch out for thrown objects Always wear approved eye protection Never lean over the cutting attachment guard Stones rubbish etc can be thrown up into the eyes causing blindness or serious injury Keep unauthorised persons at a distance Children animals onlookers and helpers should be kept outside the safety zone of 15 m Stop the machine immediately if anyone approaches Never swing the machine around without first checking behind you to make sure no one is within the safety zone WORKING TECHNIQUES WARNING Sometimes branches or grass get caught between the guard and cutting attachment Always stop the engine before cleaning Working methods WARNING Machines fitted with saw blades or grass blades can be thrown violently to the side when the blade comes into contact with a fixed object This is called blade thrust A blade thrust can be violent enough to cause the machine and or operator to be propelled in any direction and possibly lose control of the machine Blade thrust can occur without warning if the machine snags stalls or binds Blade thrust is more likely to occur in areas where it is difficult to see the material being cut Avoid cutting with the area of the blade between the 12 o clock and 3 o clock positions Because of the speed of rotation of the blade blade thrust can occur if you attemp
45. t to cut thick stems with this area of the blade e Before you start clearing check the clearing area the type of terrain the slope of the ground whether there are stones hollows etc e Start at whichever end of the area is easiest and clear an open space from which to work e Work systematically to and fro across the area clearing a width of around 4 5 m on each pass This exploits the full reach of the machine in both directions and gives the operator a convenient and varied working area to work in e Clear a strip around 75 m long Move your fuel can as work progresses e On sloping ground you should work along the slope It is much easier to work along a slope than it is to work up and down it e You should plan the strip so that you avoid going over ditches or other obstacles on the ground You should also orient the strip to take advantage of wind conditions so that cleared stems fall in the cleared area of the stand N Mir N U O N Y TEN K AN SE N N Forestry clearing using a saw blade 6 qa e The risk of blade thrust increases with increasing stem size You should therefore avoid cutting with the area of the blade between 12 o clock and 3 o clock e To fell to the left the bottom of the tree should be pushed to the right Tilt the blade and bring it diagonally down to the right exerting firm pressure At the same time push the stem using the blade guard Cut with the area o
46. th changes in skin colour or condition These symptoms normally appear in the fingers hands or wrists The risk increases at low temperatures Quick release There is an easily accessible quick release fitted at the front as a safety precaution in case the engine catches fire or in any other situation that requires you to free yourself from the machine and harness See instructions under the heading Adjusting the harness and clearing saw Certain harnesses also have a quick release fitted to the support hook id Check that the harness straps are correctiv positioned Once the harness and machine have been adjusted check that the harness quick release works correctiv Muffler The muffler is designed to keep noise levels to a minimum and to direct exhaust fumes awav from the user A muffler fitted with a catalvtic converter is also designed to reduce harmful exhaust gases In countries that have a warm and dry climate there is a significant risk of fire We therefore fit certain mufflers with a spark arrestor mesh Check whether the muffler on your machine is fitted with this kind of mesh English 9 GENERAL SAFETY PRECAUTIONS For mufflers it is very important that you follow the instructions on checking maintaining and servicing your machine See instructions under the heading Checking maintaining and servicing the machine s safety equipment Never use a machine that has a faulty muffler Regularl
47. the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti clockwise until the cutting attachment stops Low speed jet L Try to find the highest idle speed by turning the low speed jet L clockwise then anti clockwise When the highest speed has been found turn the low speed jet L 1 4 turn anti clockwise ors 9 KO L 2 CAUTION Ifthe cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti clockwise until the cutting attachment stops MAINTENANCE Fine adjustment of the idle speed T Adjust the idle speed using the idle adjustment screw T if it is necessary to readjust First turn the idle adjustment screw T clockwise until the cutting attachment starts to rotate Then turn the screw anticlockwise until the cutting attachment stops The idle speed is correctly adjusted when the engine will run smoothly in every position The idle speed should also be well below the speed at which the cutting attachment starts to rotate WARNING If the idle speed cannot be adjusted so that the cutting attachment stops contact vour dealer service workshop Do not use the machine until it has been correctiv adjusted or repaired High speed jet H GR41 GR50 RS44 The high speed jet H affects the engine power speed temperature and fuel consumption If the high speed jet H is set too lean screwed in too far the engine speed will be t
48. ure Add the remaining amount of petrol Mix shake the fuel mixture thoroughly before filling the machine s fuel tank Do not mix more than one month s supply of fuel at a time If the machine is not used for some time the fuel tank should be emptied and cleaned WARNING The catalytic converter muffler gets very hot during and after use This also applies during idling Be aware of the fire hazard especially when working near flammable substances and or vapours WARNING Taking the following precautions will lessen the risk of fire Do not smoke or place hot objects near fuel Always shut off the engine before refuelling Always stop the engine and let it cool for a few minutes before refuelling When refuelling open the fuel cap slowly so that any excess pressure is released gently Tighten the fuel cap carefully after refuelling Always move the machine away from the refuelling area before starting Always use a fuel container with an anti spill valve Clean the area around the fuel cap Contamination in the tank can cause operating problems Ensure that the fuel is well mixed by shaking the container before filling the tank am um Min 3 10 ft English 19 STARTING AND STOPPING Check before starting Starting and stopping e Check the blade to ensure that no cracks have formed at the bottom of the teeth or by the centre hole The most WARNING The complete clutch c
49. when adjusting the carburettor RS52 Speed control at 13500 rpm When attempting to adjust the speed over that specified the speed is not changed but only causes the engine to receive too little fuel resulting in a large risk of engine failure Run the machine warm for approximately 5 minutes alternating between short intervals of full throttle and idling When the carburettor is to be adjusted apply full throttle and turn the H needle anti clockwise until the engine speed reaches 10 500 11 000 r min burbles or until the cap reaches its stop position Now turn the H needle slowly clockwise until the engine reaches the speed when the speed control comes into force In some cases speed control can come into force at 200 300 revs below or above that specified It is important that you do not continue to turn the H needle clockwise when the engine speed has stabilised Screw the H needle anti clockwise a few tenths of a turn instead Dil O Setting procedure with a load Trimmer head should be used Ensure the length of the trimmer cord is correct i e exactly reaches the knife on the trimmer guard Use either 3 mm or 3 3 mm diameter trimmer cord Run the machine warm for about 5 minutes mostly at full throttle When the carburettor is to be adjusted apply full throttle and turn the H needle anti clockwise until the engine burbles or until the cap reaches its stop position If the engine runs smoothly when the cap is
50. y check that the muffler is securely attached to the machine If the muffler on your machine is fitted with a spark arrestor mesh this must be cleaned regularly A blocked mesh will cause the engine to overheat and may lead to serious damage WARNING Mufflers fitted with catalytic converters get very hot during use and remain so for some time after stopping This also applies at idle speed Contact can result in burns to the skin Remember the risk of fire WARNING The inside of the muffler contain chemicals that may be carcinogenic Avoid contact with these elements in the event of a damaged muffler WARNING Bear in mind that The exhaust fumes from the engine are hot and may contain sparks which can start a fire Never start the machine indoors or near combustible material 10 English Locking nut Fa EDIE A locking nut is used to secure some types of cutting attachment When fitting tighten the nut in the opposite direction to the direction of rotation of the cutting attachment To remove it undo the nut in the same direction as the cutting attachment rotates CAUTION The nut has a left hand thread When loosening and tightening the saw blade nut there is a risk of injury from the teeth of the saw blade You should therefore always ensure that your hand is shielded by the blade guard when doing this Always use a socket spanner with a shaft that is long enough to allow this The arrow in the diagram
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