Homelite CSP3816 - UT74123A Chainsaw User Manual
Contents
1. 4 3 M S Rear Handle aid CPA aaiae 10 7 M S UK Page 9 FEATURES TRIGGER RELEASE SILENCER CHAIN OIL CAP FRONT HAND GUARD CHAIN BRAKE FRONT HANDLE CYLINDER CATCHER CHOKE LEVER PRIMER BULB CARBURETTOR ADJUSTMENT REAR HANDLE STARTER FAN HOUSING Q ON OFF SWITCH oS A FUEL MIX THROTTLE TRIGGER UK Page 10 OPERATION For your Safety study this entire manual before operating the saw Pay particular attention to the precautions and instructions listed in the operator s manual WEAR EYE WEAR HEAD PROTECTION PROTECTION WEAR HEARING PROTECTION WEAR HEAVY DENIM WEAR NON SLIP OR CHAPS GLOVES WEAR STURDY WEAR TRIM FITTING CLOTHING AVOID SCARVES OR OTHER LOOSE CLOTHING WHICH COULD GET CAUGHT IN THE MACHINE Fig 3 A WARNING The warnings and instructions in this section of the operator s manual are for your safety and to prevent serious personal injury UNDERSTANDING YOUR CHAINSAW SAFETY DEVICES SAFE T TIP ANTI KICK BACK NOSE GUARD The SAFE T TIP prevents kick back because it covers the tip of the bar where rotational kick back is generated Inexperienced persons should never attempt to cut when the SAFE T TIP has been removed from the bar tip SAFE T TIP Users such as professional loggers who need to draw the tip through the cut make boring cuts or cut lo2. E LE MN DLE NI ty AE LE NC E E MMC NL TANEET OTT 350 cm Eid ep eC M 33 46 cm wiring Pee M 8 25 mm Eate E De PNE E D ODE S 1 25 mm MEPL OSs c Semi Chisel LoPro Skip Tooth 7 tooth Engine displacement GP BONG sica A od 38 cm COPAS Igand OS PABO 45 cm Maximum engine power ISO 7293 reip MR 1 6 kW Maximum engine power ISO 7293 GSPA4bIB AND CPA 20 debe assiste tat tu iu 1 9kW Makmum engine speed wiltaltechiiiBll o ry a abo e 12 500 min SSC ios sae t md 2 600 3 400 min Sound pressure level ISO 7182 99 4 LpA dBA SPASTIC and COPAO2D 99 4 LpA dBA Sound power level ISO 9207 eii 112 0 LwA dBpA GosP4sTS and CSPAG20 112 0 LwA dBpA Vibration ISO 7505 Front Handle Renee ety Cree ere LIE S E d MI s 4 3 M S Rear Handle PET 10 7 M S Front Handle
3. Remove the screw securing the air filter T Position a flat screw driver between the tabs and twist as shownin the illustration 8 Lift the air filter off the air filter base Choose one of the following cleaning options 9 To lightly clean tap the filter against a smooth flat HOUSING surface to dislodge most saw dust and dirt particles BAFFLE 10 For a more thorough cleaning clean in warm soapy water rinse and let dry completely NOTE An alternative method is to clean the filter with compressed air always wear eye protection to avoid eye injury 11 Reinstall the air filter making sure that the tabs on the air filter are located in channels on the air filter bottom PRE FILTER e TARTER ASSEMBLY before tightening filter retainer screw Fig 73 UK Page 34 MAINTENANCE CLEANING THE STARTER UNIT Use a brush or compressed air to keep the cooling vents of the starter assembly free and clean of debris CLEAN FLYWHEEL FINS CHECKING THE FUEL FILTER Check the fuel filter periodically Replace it if contaminated or damaged CLEANING THE ENGINE Clean the cylinder fins and flywheel fins with compressed air or a brush periodically Dangerous overheating of the engine may occur due to impurities on the cylinder A WARNING Never run the saw without all the parts including the drive case cover and starter housing securely in place Because parts can fracture and pose a danger of thrown
4. WARNING should be performed only by a qualified service technician When servicing use only identical Homelite replacement parts Carefully read through this entire operator s manual before using your new saw Pay close attention to the Safety Rules and all Safety Alert Symbols including For safe operation read and understand all instructions Danger Warning and Caution These safety rules are result in serious personal injury intended you will enjoy years of safe reliable service T Look for this symbol to point out important safety precautions It means attention Your safety is involved A WARNING The operation of any tool can result in foreign objects being thrown into the eyes which may cause severe eye injury Before beginning tool operation always wear safety goggles or safety glasses with side shields and a full face shield when needed We recommend Wide Vision Safety Mask for use over glasses or standard safety glasses with side shields Always wear eye protection UK Page 2 GENERAL SAFETY RULES A WARNING The warnings labels and instructions found in this section of the operator s manual are for your safety Failure to follow all instructions may result in serious personalinjury Safe operation of this tool requires that you read and understand this operator s manual and all labels affixed to the tool Safety is a combination of using common sense staying alert and knowing how your sa
5. a planned retreat path from the falling tree UK Page 3 GENERAL SAFETY RULES KEEP ALL PARTS OF YOUR BODY away from the saw chain when the engine is running ALWAYS CARRY THE CHAINSAW WITH THE ENGINE STOPPED AND THE BRAKE ENGAGED the guide bar and saw chain to the rear and the silencer away from your body When transporting the chainsaw use the appropriate guide bar scabbard DO NOT OPERATE CHAINSAW THAT IS DAMAGED improperly adjusted or not completely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is released TURN OFF THE ENGINE before putting the chainsaw down DO NOT leave the engine running unattended As an additional safety precaution apply the chain brake before putting down the saw USE EXTREME CAUTION when cutting small size brush and saplings because slender material may catch the saw chain and be whipped toward you or pull you off balance ll WHEN CUTTING A LIMB under tension be alert for spring back so you will not be struck when the tension in the wood fibres is released KEEP THE HANDLES dry clean and free of oil or fuel mixture OPERATE THE CHAINSAW ONLY in well ventilated areas DO NOT OPERATE A CHAINSAW IN ATREE unless you have been specifically trained to do so ll ALL CHAINSAW SERVICE other than the items listed in the instruction manual and all maintenance should be performed by competent chainsaw servi
6. a well ventilated place inaccessible to children NOTE Keep away from corrosive agents such as garden chemicals and de icing salts Abide by all regulations for the safe storage and handling of petrol Excess fuel should be used up in other 2 cycle engine powered equipment UK Page 36 BAR AND CHAIN COMBINATIONS Length of Bar Guide Bar Part Number Chain Part Number 305 mm 12 in UP08695 UP08692 356 mm 14 in UP08696 UP08693 406 mm 16 in UP08698 UP08694 PROBLEM POSSIBLE CAUSE SOLUTION Engine will not start 1 No spark 1 Check spark Remove air filter cover Remove Make sure ignition sparking plug from cylinder Reattach the sparking switch is in start plug wire and place sparking plug on top of cylinder position I with the metal part of plug touching the cylinder Pull the starter rope and watch for spark at sparking plug tip If there is no spark repeat test with a new sparking plug 2 Flooded engine 2 With the ignition switch off remove sparking plug Move choke lever to run position pushed in com pletely and pull starter cord 15 to 20 times This will clear excess fuel from engine Clean and reinstall sparking plug Set ignition switch to run 1 position Push and fully release primer bulb 7 times Pull starter three times with choke lever at run If engine does not start move choke lever to choke and repeat normal starting procedure If engine still fails to start repeat procedure with a new sp
7. damage the starter Hold onto the grip during rewinding see figure 16 Pull the starter rope until the first firing of the engine is heard no more than five pulls NOTE A new unit may require additional pulls 8 Push CHOKE lever all the way IN 9 Pull STARTER until engine runs NOTE Allow the saw to run in this position 15 30 seconds depending on the temperature 10 Immediately SQUEEZE and release the throttle trigger Immediately depress the throttle trigger which releases the trigger lock button Squeeze and release the throttle trigger to let the engine idle 12 Move chain brake to RUN position Place chain brake lever hand guard into the RUN position as shown in figure 18 Refer to Operation Operating Chain Brake for additional information A CAUTION Failure to release partial throttle when chain brake lever is in the brake position will result in serious damage to the unit Never squeeze and hold the throttle trigger while the chain brake is in the brake position Now you are ready to pick up the saw Use the proper grip for both handles refer to Operation for additional information STARTING A WARM ENGINE Follow the instructions for starting a cold engine steps 1 9 but do not attempt to start in the full choke position skip step 5 Push and release primer bulb 7 times Pull the choke out and push back it in to the original run position STOPPING THE ENGINE Release the
8. lubricating hole See Figure 68 Turn the guide bar and check that the lubrication holes and chain groove are free from impurities LUBRICATING HOLE MAINTAINING THE SAFE T TIP NOSE GUARD A CAUTION Make sure the chain has stopped before you do any work on the saw A WARNING Although the guide bar comes with a SAFE T TIP anti kick back device already installed be sure to check the tightness of the mounting screw before each use Tighten the mounting screw of the nose guard as instructed below These are specially hardened screws If you cannot install the screw tightly replace both the screw and the SAFE T TIP before further operation Do not replace the screw with an ordinary screw In addition to preventing chain contact with solid objects at the nose of the bar the SAFE T TIP also helps keep the chain away from abrasive surfaces such as the ground Keep it on the right hand side of the bar where it will be between the chain and the ground during flush with ground cutting The mounting screw requires a 5 16 in spanner or adjustable spanner to achieve the recommended tightness of 4 5 Nm 35 to 45 in Ib A tightness within this range can be achieved by using the following method See Figure 69 1 Tighten the screw with your finger 2 Tighten the screw an additional three quarters of a turn using a spanner MOUNTING SAFE T TIP Fig 69 UK Page 33 MAINTENANCE Clean the pre filt
9. Allow the chain to cut for you exert only light downward pressure Forcing the cut could result in damage to the bar chain or engine 6 Release the throttle trigger as soon as the cut is completed allowing the engine to idle Running the saw at full throttle without a cutting load can result in unnecessary wear to the chain bar and engine 7 Do not put pressure on the saw at the end of the cut WORK AREA PRECAUTIONS Cut only wood or materials made from wood no sheet metal no plastics no masonry no non wood building materials Never allow children to operate your saw Allow no person to use this chainsaw who has not read this operator s manual or received adequate instructions for the safe and proper use of this chainsaw Keep everyone helpers bystanders children and animals a SAFE DISTANCE from the cutting area During felling operations the safe distance should be a least twice the height of the largest trees in the felling area During bucking operations keep a minimum distance of 4 5 m 15 ft between workers Always cut with both feet on solid ground to prevent being pulled off balance Do not cut above chest height as a saw held higher is difficult to control against kick back forces lll Do not fell trees near electrical wires or buildings Leave this operation for professionals Cut only when visibility and light are adequate to see clearly ADJUSTING THE CARBURETTOR Before adj
10. BACK DANGER ROTATIONAL KICK BACK UK Page 12 OPERATION A WARNING Always turn off engine before refuelling Never add fuel to a machine with a running or hot engine Move at least 9 m 25 ft from refuelling site before starting the engine DO NOT SMOKE Failure to heed this warning may result in possible personal injury FUEL AND REFUELLING HANDLING THE FUEL SAFELY A WARNING Check for fuel leaks If any are found correct them before using the saw to prevent fire or burn injury Always handle fuel with care it is highly flammable Always refuel outdoors and do not inhale fuel vapour Do not let petrol or oil come in contact with skin Keep petrol and oil away from the eyes If petrol or oil comes in contact with the eyes wash them immediately with clean water If irritation is still present see a doctor immediately Clean up spilled fuel immediately MIXING THE FUEL This product is powered by a 2 cycle engine and requires pre mixing petrol and 2 cycle oil Pre mix unleaded petrol 2 cycle engine oil in a clean container approved for petrol This engine is certified to operate on unleaded petrol intended for motor vehicle use with an octane rating of 87 M 2 or higher lll Do not use any type of pre mixed petrol oil from fuel service stations This includes the pre mixed petrol oil intended for use in mopeds motorcycles etc ll Use a high quality 2 cyc
11. Homelite OPERATOR S MANUAL CSP3816 UT74123A 406 mm 16 in 38cc Chainsaw CSP4518 UT74125A 457 mm 18 in 45cc Chainsaw CSP4520 UT74127A 508 mm 20 in 45cc Chainsaw Your new chainsaw has been engineered and manufactured to Homelite s high standard for dependability ease of operation and operator safety Properly cared for it will give you years of rugged trouble free performance A WARNING To reduce the risk of injury the user must read and understand the operator s manual Thank you for buying a Homelite chainsaw SAVE THIS MANUAL FOR FUTURE REFERENCE TABLE OF CONTENTS AOU CH ON TRE LUI TOIT UEM 2 E General Sale RUGS iasoer ieren a a e a a aa 3 4 Specific Safety RUES eiee ani diva er hn er Reed ER RTI Pa adage RR TO E Rd 5 6 ESAE URUEEETITm 7 8 RETE OTTONIS 9 mE OE O 10 PR TEIL m ELE 11 25 W Nanenane ERUNT ELE 26 36 Bar and Chain Combination nnn nnnm nnb ntn tnnt ntn tnn 37 IN robleshio lfg ee E E 37 38 1 NEED TUI Ee 39 Safety Direttive 5 02 tiende ed eben iai nia Pu des a fae fas enden 39 INTRODUCTION IMPORTANT Servicing requires extreme care and knowledge and A
12. ION PEATE BAR MOUNTING NUTS Fig 43 UK Page 26 MAINTENANCE 6 Lay out the saw chain in a loop and straighten any kinks The cutters should face in the direction of chain rotation If they face backwards turn the loop over See Figure 45 7T Place the chain drive links into the bar groove as shown in figure 46 8 Position the chain so there is a loop at the back of the bar 9 Hold the chain in position on the bar and place the loop round the sprocket 10 Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar NOTE When placing the bar on the bar studs ensure that the adjusting pin is in the chain tension pin hole CHAIN DRIVE LINKS CUTTERS CHAIN ROTATION BAR STUDS CHAIN DRIVE LINKS ue UK Page 27 MAINTENANCE 11 Replace the outer guide bar plate ensuring that the bar pin groove is at the bottom with the upper and lower edges angled away from the guide bar 12 Replace the clutch cover and bar mounting nuts 13 Tighten the bar mounting nuts finger tight only The bar must be free to move for tension adjustment 14 Remove all slack from the chain by turning the chain tensioning screw clockwise until the chain seats snugly against the bar with the drive links in the bar groove 15 Lift the tip of the guide bar up to check for sagging 16 Release the tip of the guide bar and turn the chain tensioning screw half a turn clockwise Repeat thi
13. NG Do not fell trees during periods of high wind or heavy precipitation Wait until the hazardous weather has ended When felling a tree it is important that you heed the following warnings to prevent possible serious injury Wear eye hearing and head protection when operating this equipment E Do not cut down trees having an extreme lean or large trees with rotten or dead limbs loose bark or hollow trunks Have these trees pushed or dragged down with heavy equipment and then cut them up Consider the distribution and weight of heavy limbs Clear out the underbrush round the tree to be felled lll Do not cut trees near electrical wires or buildings Consider the direction in which the tree leans Check the tree for damaged or dead branches which could fall and hit you during felling Periodically glance at the top of the tree during the back cut to assure the tree is going to fall in the desired direction Keep all bystanders at a safe distance at least twice the height of the tree lll Prepare a path of safe retreat the tree starts to fall in the wrong direction or if the saw gets caught or hung up during the fall leave the saw and save yourself Consider the wind direction before felling a tree lll Do notfell trees near power lines or near buildings which could be struck by falling limbs or the tree itself The chainsaw operator should keep on the uphill side of the terrain as t
14. Never cut through to the notch when making a back cut The hinge controls the fall of the tree this is the section of wood between the notch and back cut lt NOTCH APPROX 1 3 DIAMETER OF BACK CUT 5 cm 2 in UK Page 22 OPERATION REMOVING BUTTRESS ROOTS A buttress root is a large root extending from the trunk of the tree above the ground Remove large buttress roots before felling Make the horizontal cut into the buttress first followed by the vertical cut Remove the resulting loose section from the work area Follow the correct tree felling procedure after you have removed the large buttress roots Refer to Operation Proper Procedure for Felling VERTICAL CUT Trees earlier in this manual BUCKING LOOSE SECTION Bucking is the term used for cutting a fallen tree to the desired log length Cut only one log at a time HORIZONTAL Support small logs on a saw horse or another log CUT while bucking Keep a clear cutting area Make sure no objects can contact the guide bar nose and chain during cutting this can cause kick back To avoid the danger keep the SAFE T TIP anti kick back device attached while cutting Refer to Safety Kick back earlier in this manual lll During bucking operations stand on the uphill side so that the cut off section of the log cannot roll over you Sometimes it is impossible to a
15. age Fig 59 A WARNING Improper chain sharpening increases the potential of kick back A WARNING Failure to replace or repair a damaged chain may cause serious injury A WARNING The saw chain is very sharp Always wear protective gloves when performing maintenance to the chain UK Page 31 MAINTENANCE TOP PLATE FILING ANGLE SIDE PLATE FILING ANGLE CORRECT 30 file holders are marked with guide marks to align file properly to produce correct top plate angle E LESS THAN 30 for cross cutting MORE THAN 30 feathered edge dulls quickly SIDE PLATE ANGLE CORRECT 80 Produced automatically if you use the correct diameter file in the file holder HOOK Grabs and dulls quickly increases the potential of KICK BACK Results from using a file with a diameter too small or a file held too low INCORRECT BACKWARD SLOPE Needs too much feed pressure causes excessive wear to the bar and chain Results from using a file with a diameter too large or file held too high DEPTH GAUGE MAINTAINING DEPTH GAUGE CLEARANCE Maintain the depth gauge at a clearance of 0 6 mm 0 025 in Use a depth gauge tool for checking the depth gauge clearances ll Every time the chain is filed check the depth gauge clearance lll Use a flat file and a depth gauge jointer to lower all gauges uniformly Use a 0 6 mm 0 025 in depth gauge jointer After lowering each depth gauge restore or
16. arking plug Engine starts but will not Carburettor requires L Low jet Contact a Homelite service dealer for carburettor accelerate properly adjustment adjustment Engine starts but will not Carburettor requires H High jet Contact a Homelite service dealer for carburettor run properly at high adjustment adjustment speed Engine does not reach 1 Check oil fuel mixture 1 Use fresh fuel and the correct 2 cycle oil mix ratio full speed and or emits 2 Air filter dirty 2 Clean air filter Refer to Maintenance Cleaning the excessive smoke Air Filter earlier in this manual 3 Spark arrester screen dirty 3 Clean spark arrester screen Refer to Maintenance Cleaning the Spark Arresting Silencer earlier in this manual 4 Carburettor requires H High 4 Contact a Homelite service dealer for carburettor jet adjustment adjustment UK Page 37 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Engine starts runs and Carburettor requires adjustment Turn idling speed screw clockwise to increase accelerates but will not idling speed If chain turns at idle turn idling speed idle screw T anticlockwise to decrease speed Wear protective equipment and observe all safety instruc tions See Figure 82 Bar and chain running 1 Chain oil tank empty 1 Oil tank should be filled every time that fuel tank is hot and smoking filled 2 Check chain tension for over 2 Tension chain per instructions in Mai
17. ce personnel For example if improper tools are used to remove the flywheel or if an improper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel may occur and subsequently cause the flywheel to burst ll KEEP ALL PARTS OF YOUR BODY away from the saw chain when the engine is running KEEP SAFE T TIP ANTI KICK BACK NOSE GUARD properly mounted on the guide bar to prevent rotational kick back FOLLOW THE SHARPENING and maintenance instructions for the saw chain USE ONLY THE REPLACEMENT GUIDE BARS and low kick back chains specified for your saw DO NOT adapt your power head to a bow guide or use it to power any attachments or devices not listed for your saw SAVE THESE INSTRUCTIONS Refer to them frequently and use to instruct other users If you lend someone this tool lend them these instructions too UK Page 4 SPECIFIC SAFETY RULES A WARNING The warnings labels and instructions found in this section of the operator s manual are for your safety Failure to follow all instructions may result in serious personal injury GENERAL PRECAUTIONS DO NOT CUT VINES and or small underbrush less than 76 mm 3 in in diameter SILENCER SURFACES ARE VERY HOT during and after operation of the chainsaw keep all body parts away from the silencer Serious burns may occur if contact is made with the silencer BIALWAYS HOLD THE CHAINSAW WITH BOTH HANDS when the en
18. e third the diameter of the trunk in the side of the tree Make the notch cuts so they intersect at right angles to the line of fall This notch should be cleaned out to leave a straight line To keep the weight of the wood off the saw always make the lower cut of the notch before the upper cut See Figure 31 4 Make the back cut level and horizontal and at a minimum of 5 cm 2 in above the horizontal cut of the notch See Figure 31 NOTE Never cut through to the notch Always leave a band of wood between the notch and back cut approxi mately 5 cm 2 in or one tenth the diameter of the tree This is called the hinge or hinge wood It controls the fall of the tree and prevents slipping twisting or shoot back of the tree off the stump See Figure 32 On large diameter trees stop the back cut before it is deep enough for the tree to either fall or settle back on the stump Then insert soft wooden or plastic wedges into the cut so they do not touch the chain Drive wedges in little by little to help jack the tree over See Figure 33 When bucking or felling with a wedge it may be neces sary to remove the SAFE T TIP anti kick back device to allow the bar to be drawn through the cut After you complete the cut reinstall the tip immediately 5 As tree starts to fall stop the chainsaw and put it down immediately Retreat along the cleared path but watch the action in case something falls your way A WARNING
19. eep all body parts away from the silencer Serious burns may occur if contact is made with the silencer 1 Allow the silencer to cool 2 The spark arrester screen is retained by the deflector Remove the nuts and screen retainer to access the spark arrester screen 3 Replace the spark arrester screen if it is cracked or otherwise deteriorated SPARK ARRESTER SCREEN SILENCER CHAIN BRAKE Remove the clutch cover and clean the chain brake components Check wear on the brake band and replace if worn or deformed The band thickness should not be less than 0 60 mm 0 025 in or worn halfway through Always keep the chain brake mechanism clean and lightly lubricate the linkage Always test the chain brake performance after servicing or cleaning Refer to Operation Operating Chain Brake earlier in this manual for additional information Check and if damaged replace the chain catcher CHAIN CATCHER BRAKE BAND LUBRICATE THE CHAIN CLEAN THE CHAIN BRAKE BRAKE LINKAGE STORING THE CHAINSAW 1 MONTH OR LONGER 1 Drain all fuel from tank into a container approved for petrol 2 Run the engine until it stops This will remove all fuel oil mix which could become stale and leave varnish and gum in the fuel system 3 Drain all bar and chain oil from tank into a container approved for oil 4 Clean all foreign material from the saw 5 Store it in
20. er every 25 tanks of fuel or sooner if iG required Remove the cylinder cover starter assembly TIGHTEN 3 4 and the fan housing baffle for access to the pre filter in OF A TURN the engine housing NOTE If you use an air hose for drying blow through both sides of filter A CAUTION Never run the engine without the air filter serious damage could result Make sure the air filter is correctly placed in the air MOUNTING THE SAFE T TIP NOSE GUARD filter cover before reassembly See Figure 70 1 Mount the SAFE T TIP on the bar nose See Figure 70 2 Fit the locking rivet or tab in the recessed hole in the CYLINDER COVER guide bar j 3 Tighten the screw with your finger 4 From the finger tight position tighten the screw an additional three quarters of a turn using a spanner CLEANING THE AIR FILTER NOTE Always clean the air filter before making any mixture adjustments of the carburettor 1 Foraccess to the air filter and carburettor area loosen the three screws holding the cylinder cover 2 Activate chain brake 3 Lift the front of the cylinder cover past chain brake lever 4 Liftthe back of the cylinder cover past the handle 5 Before removing the air filter from the carburettor blow AIR FILTER or brush as much loose dirt and sawdust from around Vs RETAINING the carburettor and chamber as possible NOTE Make sure to pull the choke rod out to keep the carburettor from being contaminated 6
21. gine is running Use a firm grip with thumbs and fingers encircling the chainsaw handles NEVER LET ANYONE USE YOUR CHAINSAW who has not received adequate instructions in its proper use This applies to hired as well as privately owned saws BEFORE YOU START THE ENGINE make sure the saw chain is not contacting any object OPERATE THE CHAINSAW only in well ventilated areas SAFETY APPAREL Wear snug fitting clothing Always wear heavy long trousers boots and gloves Do not wear jewellery shorts sandals or go barefoot Do not wear loose fitting clothing which could be drawn into the engine or catch the chain or underbrush Wear overalls jeans or chaps made of cut resistant material or ones that contain cut resistant inserts Secure hair so that it is above shoulder level Wear non slip safety footwear and heavy duty gloves to improve your grip and to protect your hands Wear eye hearing and head protection when operating this equipment REFUELLING DO NOT SMOKE To reduce the risk of fire and burn injury handle fuel with care It is highly flammable Mix and store fuel in a container approved for petrol Bl Mix fuel outdoors where there are no sparks or flames Select bare ground stop the engine and allow it to cool before refuelling lll Loosen the fuel cap slowly to release pressure and to keep fuel from escaping round the cap Tighten the fuel cap securely after refuelling E W
22. gs bigger than the bar length should reinstall the SAFE T TIP as soon as those cuts are complete When cutting without the SAFE T TIP the user must use proper techniques as shown in the manual to avoid kick back NOTE Refer to Maintenance later in this manual for instructions on reinstalling the SAFE T TIP nose guard LOW KICK BACK SAW CHAIN The rakers depth gauges ahead of each cutter can minimise the force of a kick back reaction by preventing the cutters from digging in too deeply at the kick back zone Only use replacement chain which is equivalent to the original chain or has been certified as a low kick back chain As saw chains are sharpened they lose some of the low kick back qualities and extra caution is required GUIDE BARS Generally guide bars with small radius tips have somewhat lower kick back potentials When making a replacement be sure to order one of the Homelite bars listed for your saw in this operator s manual The proper size SAFE T TIP nose guard comes installed on the bar Use only guide bars that have a provision for mounting the SAFE T TIP UK Page 11 OPERATION CHAIN BRAKE Chain brakes are designed to quickly stop the chain from rotating When the chain brake lever hand guard is pushed towards the bar the chain should stop immediately A chain brake does not prevent kick back The chain brake should be cleaned and tested daily Refer to Operation later in this manua
23. he tree is likely to roll or slide downhill after it is felled Remove dirt stones loose bark nails staples and wire from the tree where felling cuts are to be made A WARNING Do NOT fell trees near power lines or near buildings which could be struck by falling limbs or the tree itself STAY AWAY FROM ELECTRICAL LINES AND BUILDINGS KEEP BYSTANDERS WEIGHT OF HEAVY LIMBS DEAD LIMBS CLEAR CONSIDER THE UNDERBRUSH DIRECTION IN WHICH THE TREE LEANS x RETREAT WEAR EYE HEAD AND PATH HEARING PROTECTION AS WELL AS OTHER SAFETY APPAREL UK Page 20 OPERATION PROPER PROCEDURE FOR TREE FELLING See Figure 30 PLANNED LINE OF FALL 1 Pick your escape route or routes in case the intended route is blocked Clear the immediate area round the tree and make sure there are no obstructions in your planned path of retreat Clear the path of safe retreat approximately 135 from the planned line of fall 2 Consider the force and direction of the wind the lean and balance of the tree and the location of large limbs These things influence the direction in which the tree will fall Do not try to fell a tree along a line different from its natural line of fall PLANNED PATH OF SAFE RETREAT 135 FROM PLANNED LINE OF FALL RETREAT SAFE RETREAT PLANNED ZONE LINE OF FALL RETREAT UK Page 21 OPERATION Nm HINGE 5 cm 2 in OR 1 10 DIA 3 Cuta notch about on
24. iginal shape by rounding the front Be careful not to damage adjoining drive links with the edge of the file See Figures 65 and 66 Depth gauges must be adjusted with the flat file in the CORRECT same direction the adjoining cutter was filed with the round file Use care not to contact cutter face with flat LESS THAN file when adjusting depth gauges 30 MORE Xu CR Cet TOP PLATE FILING ANGLE DEPTH GAUGE JOINTER INCORRECT Fig 63 FLAT FILE Fig 66 UK Page 32 MAINTENANCE RESTORE ORIGINAL SHAPE BY ROUNDING THE FRONT MAINTAINING THE GUIDE BAR A CAUTION Make sure the chain has stopped before you do any work on the saw Every week of use reverse the guide bar on the saw to distribute the wear for maximum bar life See Figure 68 The bar should be cleaned every day of use and checked for wear and damage Feathering or burring of the bar rails is a normal process of bar wear Such faults should be smoothed with a file as soon as they occur A bar with any of the following faults should be replaced Wear inside the bar rails that permits the chain to lie over sideways Bent guide bar Cracked or broken rails Spread rails In addition lubricate guide bars with a sprocket at their tip weekly Using a grease syringe lubricate weekly in the
25. ing loss of control of the chainsaw This could result in severe or fatal injury to the operator CUTTING SPRING POLES See Figure 40 A spring pole is any log branch rooted stump or sapling which is bent under tension by other wood so that it springs back if the wood holding it is cut or removed On a fallen tree a rooted stump has a high potential of springing back to the upright position during the bucking cut to separate the log from the stump Watch out for spring poles they are dangerous UK Page 25 MAINTENANCE ASSEMBLING THE BAR AND CHAIN See Figures 41 through 47 DANGER Never start the engine before installing the guide bar chain drive case cover and clutch drum Without all these parts in place the clutch may fly off or explode exposing the user to possible serious injury COMBINATION WRENCH A WARNING To avoid serious personal injury read and understand all the safety instructions in this section Fig 42 1 Always place the switch in the stop O position before you work on the saw 2 Make sure the chain brake is not set by pulling the chain brake lever hand guard towards the front handle to the RUN position 3 Wear gloves when handling the chain and bar These components are sharp and may contain burrs 4 Remove the bar mounting nuts using a combination wrench or 5 8 in spanner 5 Remove the clutch cover and the outer guide bar plate GUIDE BAR RUN POSIT
26. inue use until the repair is made Serious personal injury may result from the saw chain turning atidle A WARNING Weather conditions and altitude may affect carburation Do not allow bystanders close to the chainsaw while adjusting the carburettor OPERATING THE CHAIN BRAKE Refer to Safety earlier in this manual for additional information Check the operating condition of the chain brake before each use 1 Start the engine and grasp the front and rear handles securely with both hands 2 Pull the throttle trigger to bring the chainsaw up to full speed Using the back of your left hand engage the chain brake by pushing the chain brake lever hand guard towards the bar while the chain is rotating rapidly See Figure 27 NOTE The chain brake should engage and stop the chain immediately If not stop the saw by pressing the on ignition switch Take the saw to a Homelite service dealer for repair and discontinue use until the repair is made 3 Reset the chain brake back into the RUN position by grasping the right hand side from operator s position of the chain brake lever hand guard and pull towards the front handle until you hear a click See Figure 28 BRAKE POSITION A WARNING If the chain brake does not stop the chain immediately take the saw to a Homelite service dealer for repair before use UK Page 19 OPERATION FELLING TREES HAZARDOUS CONDITIONS See Figure 29 A WARNI
27. ipe spilled fuel from the unit Move 9 m 25 ft away from refuelling site before starting engine Never attempt to burn off spilled fuel under any circumstances BASIC PRECAUTIONS IN THE CUTTING WORK AREA Do not operate a chainsaw in a tree lll Do not cut from a ladder this is extremely dangerous Keep bystanders and animals out of the work area Do not allow other persons to be nearby during starting or cutting with the chainsaw NOTE The size of the work area depends on the job being performed as well as the size tree or work piece involved For example felling a tree requires a larger work area than making other cuts such as bucking cuts etc UK Page 5 SPECIFIC SAFETY RULES PUSH AND PULL The reaction force is always opposite to the direction the chain is moving Thus the operator must be ready to control the PULL when cutting on the bottom edge of the bar and the PUSH when cutting along the top edge NOTE Your chainsaw has been fully factory tested It is normal to find some slight oil residue on the saw MAINTENANCE PRECAUTIONS Never operate a chainsaw that is damaged improperly adjusted or not completely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is released If the saw chain moves at idling speed the carburettor may need adjusting Refer to Operation later in this manual If the saw chain still moves at idling speed after adjustme
28. l for additional information A WARNING Even with daily cleaning of the mechanism the dependability of a chain brake to perform under field conditions cannot be certified Keep the SAFE T TIP nose guard on the saw guide bar and use proper cutting techniques RUN POSITION A WARNING KICK BACK occurs when the moving chain contacts an object at the upper portion of the tip of the guide bar or when the wood closes in and pinches the saw chain in the cut Contact at the upper portion of the tip of the guide bar can cause the chain to dig into the object and stop the chain for an instant The result is a lightning fast reverse reaction which kicks the guide bar up and back towards the operator If the saw chain is pinched along the top of the guide bar the guide bar can be driven rapidly back toward the operator Either of these reactions may cause loss of saw control which can result in serious injury Do not rely exclusively upon the safety devices built into the saw As a chainsaw user you should take several steps to keep your cutting jobs free from accident or injury KICK BACK PRECAUTIONS Rotational kick back occurs when the moving chain con tacts an object at the Kick back Danger Zone of the guide bar The result is a lightning fast reverse reaction which kicks the guide bar up and back towards the operator This reaction may cause loss of control which can result in serious injury POSITION KICK
29. le self mixing oil for air cooled engines Do not use motor vehicle oil or 2 cycle out board oil Mix 2 oil into the petrol This is a 50 1 ratio Mix the fuel thoroughly and each time before refuelling Bl Mix in small quantities Do not mix quantities larger than usable in a 30 day period A 2 cycle oil containing a fuel stabiliser is recommended ie FILLING THE TANK Refer to Specific Safety Rules Refuelling earlier in this manual for additional safety information 1 Clean the surface round fuel cap to prevent contamina tion 2 Loosen the fuel cap slowly 3 Carefully pour the fuel mixture into the tank Avoid spillage See Figure 8 4 Before replacing the fuel cap clean and inspect the gasket 5 Immediately replace the fuel cap and hand tighten Wipe up any fuel spillage NOTE It is normal for the engine to emit smoke during and after the first use wn 1 Litre 2 Litres 20 40 60 80 100 4 Litres 3 Litres 5 Litres UK Page 13 OPERATION STARTING THE ENGINE A WARNING Keep your body to the left of the chain line Never straddle the saw or chain or lean over past the chain line 1 Place the chainsaw on level ground and ensure that no objects or obstructions which could come in contact with the bar and chain are in the immediate vicinity 2 Hold the front handle firmly with the left hand and put your right f
30. mud or sand on the wood 1 Wear gloves for protection let the Homelite service dealer sharpen the chain 2 Tensionthe chain before sharpening NOTE Inspect the drive sprocket for wear or damage NOTE Refer to Maintenance Adjusting the Chain when replacing the chain If signs of wear or damage are Tension earlier in this manual present in the areas indicated have the drive sprocket 3 Use a 5 32 in diameter round file and holder replaced by a Homelite service dealer See Figure 56 Do all filing at the midpoint of the bar 4 Keep the file level with the top plate of the tooth Do not let the file dip or rock See Figure 58 5 Using light but firm pressure Stroke towards the front corner of the tooth 6 Lift the file away from the steel on each return stroke even ante 7 Put a few firm strokes on every tooth File all left hand cutters in one direction Then move to the other side and file the right hand cutters in the opposite direction 8 Remove filings from the file with a wire brush INSPECT DRIVE SPROCKET CORNER TOP PLATE SIDE PLATE RIVET HOLE HEEL v DEPTH GAUGE GULLET RAKER DEPTH GAUGE CLEARANCE Fig 58 UK Page 30 MAINTENANCE CHECK FOR WEAR OR DAMAGE LEFT HAND CUTTERS 45 RIGHT HAND CUTTERS A CAUTION A dull or improperly sharpened chain can cause excessive engine speed during cutting which may result in severe engine dam
31. nt has been made contact a Homelite service dealer for adjustment and discontinue use until the repair is made A WARNING All chainsaw service other than items the operator s manual maintenance instructions should be performed by competent chainsaw service personnel If improper tools are used to remove the flywheel or clutch or if an improper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur which could subsequently cause the flywheel to burst with possible serious injury KICK BACK Kick back is a dangerous reaction which may lead to serious injury Do not rely only on the safety devices provided with your saw As a chainsaw user you must take special safety precautions to help keep your cutting jobs free from accident or injury NOTE See the Operation section later in this manual for added information on kick back and how to avoid serious personal injury UK Page 6 SYMBOLS Important Some of the following symbols may be used on your tool Please study them and learn their meaning Proper interpretation of these symbols will allow you to operate the tool better and more safely SYMBOL NAME Safety Alert Symbol Read Your Operator s Manual Eye Hearing and Head Protection SAFE T TIP Nose Guard No Smoking Operate with Two Hands One Handed Carbon Monoxide Kick back Bar Nose Contact EXPLANATION Indicates dange
32. ntenance tight condition Adjusting the Chain Tension earlier in this manual 3 Check for oiler function 3 Run at half throttle 30 to 45 seconds Stop saw and check for oil dripping from SAFE T TIP and guide bar If oil is present the chain may be dull or bar may be damaged If no oil is on the SAFE T TIP contact a Homelite service dealer Engine starts and runs 1 Chain brake engaged 1 Release chain brake refer to Operation Operating but chain is not rotating Chain Brake earlier in this manual 2 Chain tension too tight 2 Tension chain per instructions in Maintenance Adjusting the Chain Tension earlier in this manual 3 Check guide bar and chain 3 Refer to Maintenance Assembling the Bar and assembly Chain earlier in this manual 4 Check guide bar and chain for 4 Inspect guide bar and chain for damage damage NOTE The carburettor adjustment needles are equipped with plastic caps which prevent anticlockwise rotation from the original factory adjustment If your product exhibits specific performance problems where the Troubleshooting Section recommends an anticlockwise needle adjustment and you have made no adjustments since the original purchase take the product to a factory authorised service dealer for repair In most cases the needed adjustment is a simple task for the factory trained service representative UK Page 38 WARRANTY GUARANTEE STATEMENT RTSA RTUK All Homelite p
33. objects leave repairs of the flywheel and clutch to trained Homelite service dealer personnel FUEL FILTER Fig 77 REPLACING THE SPARKING PLUG This engine uses a Champion RCJ 4 with 0 63 mm 0 025 in electrode gap Use an exact replacement and replace every six months or more frequently if necessary 1 Loosen the sparking plug by turning it anticlockwise with a spanner CLEAN CYLINDER 2 Remove sparking plug FINS 3 Hand thread the new sparking plug turning it clockwise NOTE Be careful not to cross thread the sparking plug Cross threading will seriously damage the product NOTE Depending on the type of fuel used the type and amount of oil used and or your operating conditions the exhaust port and silencer may become blocked with carbon deposits If you notice a power loss with your petrol powered tool you may need to remove these deposits to restore performance We highly recommended that only qualified service technicians perform this service UK Page 35 MAINTENANCE CLEANING THE SPARK ARRESTING SILENCER The silencer is equipped with a spark arrester screen A faulty spark arrester screen may create a fire hazard Through normal use the screen becomes dirty and should be inspected weekly and cleaned as required Always keep the silencer and spark arrester on your saw in good condition A WARNING Silencer surfaces are very hot during and after operation of the chainsaw K
34. of a correctly tensioned warm chain will hang approximately 1 25 mm 1 8 in out of the bar groove To help determine the CAUTION correct warm chain tension the tip of the combination Check that the switch is in the STOP O position wrench can be used as a guide See Figures 52 53 before working on the saw and 54 NOTE New chain tends to stretch check the chain Use only a low kick back chain on this saw This fast cutting tension frequently and tension as required chain provides kick back reduction when properly main tained A CAUTION For smooth and fast cutting maintain the chain properly The chain requires sharpening when the wood chips are A chain tensioned while warnumay be too tight when small and powdery the chain must be forced through the cool Check the cold tension before next use wood during cutting or the chain cuts to one side During maintenance of the chain consider the following improper filing angle of the side plate increases the risk FLATS ON DRIVE LINKS of a severe kick back UK Page 29 MAINTENANCE lll Raker depth gauge clearance See Figure 55 SHARPENING THE CUTTERS 1 Too low increases the potential for kick back Be careful to file all cutters to the specified angles and to 2 Notlow enough decreases cutting ability the same length as fast cutting can only be obtained when lll If the cutter teeth hit hard objects such as nails and stones are abraded by
35. old the saw firmly to maintain control 130 GUT Na DIA LOAD FINISHING CUT OVER BUCKING UK Page 24 OPERATION LIMBING AND PRUNING Work slowly keeping both hands on the saw with firm grip Maintain secure footing and balance Keep the tree between you and the chain while limbing Cut from the side of the tree opposite the branch you are cutting ll Do not cut from a ladder this is extremely dangerous Leave this operation for professionals lll Do not cut above chest height as a saw held higher is FIRST CUT difficult to control against kick back 1 3 DIAMETER A WARNING Never climb into a tree to limb or prune Do not stand on FINISHING CUT ladders platforms a log or in any position which mau cause you to lose your balance or control of the saw E When pruning trees it is important not to make the flush SPRING POLE cut next to the main limb or trunk until you have cut off the limb further out to reduce the weight This prevents stripping the bark from the main member See Figure 39 1 Under buckthe branch one third through for your first cut 2 Over buck the branch to drop it 3 Finish by cutting smoothly and neatly against the main member so the bark will grow back to seal the wound A WARNING Spring poles are dangerous and could strike the A WARNING If the limbs to be pruned are above chest height hire a professional to perform the pruning operator caus
36. ons DO NOT let the nose of the guide bar contact a log branch fence or any other obstruction which could be hit while you are operating the saw 4 Cut at high engine speeds Always cut with the engine running at full speed Fully squeeze the throttle trigger and maintain a steady cutting speed 5 Do not overreach or cut above shoulder height 6 Follow the manufacturer s sharpening and mainte nance instructions for the saw chain 7 Only use replacement bars and chains specified by the manufacturer or the equivalent DO NOT OPERATE A CHAINSAW WITH ONE HAND Serious injury to the operator helpers and or bystanders may result from one handed operation A chainsaw is intended for two handed use DO NOT OPERATE CHAINSAW WHEN YOU ARE FATIGUED Never operate a chainsaw when you are tired or under the influence of medication drugs or alcohol USE SAFETY FOOTWEAR Wear snug fitting clothing protective gloves and eye hearing and head protection devices DO NOT STAND ONANY UNSTABLE SURFACE while using your chainsaw This includes ladders scaffolding trees etc USE CAUTION WHEN HANDLING FUEL Move the chainsaw at least 9 m 25 ft from the refuelling point before starting the engine DO NOT ALLOW OTHER PERSONS to be near the chainsaw when starting or cutting with the chainsaw Keep bystanders and animals out of the work area DO NOT START CUTTING until you have a clear work area secure footing and
37. oot onto the base of the rear handle See ADDING OIL Figure 10 Use HOMELITE Bar and Chain Oil It is designed for chains and chain oilers and is formulated to perform over a wide temperature range with no dilution required Chainsaw should use approximately one tank of oil per tank of fuel NOTE Do not use dirty used or otherwise contaminated oils Damage may occur to the oil pump bar or chain 1 Carefully pour the bar and chain oil into the tank See BRAKE POSITION Figure 9 2 Fill the oil tank every time you refuel the engine IGNITION SWITCH IN THE RUN POSITION UK Page 14 OPERATION STARTING A COLD ENGINE 3 Move the chain brake to the BRAKE position NOTE Set the chain brake by pushing the chain brake lever hand guard forward towards the bar to the brake position Refer to Operation Operating Chain Brake for additional information 4 Set the ignition switch to the RUN I position 5 Fully press and release the PRIMER BULB 7 times 6 Pull CHOKE lever all the way OUT to full position The partial throttle position is automatically set when the choke lever is set at full choke TRIGGER RELEASE RUN POSITION THROTTLE TRIGGER UK Page 15 OPERATION 7 Pull STARTER until engine attempts to start Slowly pull the starter grip out for a short distance until you feel the starter engage then briskly pull straight up Do not pull to the end of the rope this may
38. r warning or caution It means attention Your safety is involved Your manual contains special messages to bring attention to potential safety concerns and machine damage as well as helpful operating and servicing information Please read all the information carefully to avoid injury and machine damage Wear eye hearing and head protection when operating this equipment The SAFE T TIP nose guard on the guide bar helps prevent kick back No smoking sparks or open flame Hold and operate the saw properly with both hands Do not operate the saw using only one hand Engines produce carbon monoxide which is an odourless deadly poison Do not operate in an enclosed area Danger beware of kick back Avoid bar nose contact Wear non slip gloves To stop the engine move the switch to the O STOP position ON to Run O OFF to Stop UK Page 7 SYMBOLS No Smoking Do not smoke when mixing fuel or filling fuel tank Use unleaded petrol intended for motor vehicle use with an octane rating of 87 R M 2 or higher Use 2 cycle oil for air cooled engines Mix the fuel mix thoroughly and also each time before refuelling SAVE THESE INSTRUCTIONS UK Page 8 SPECIFICATIONS No bar cham lel OM Ollliscecesscsisacecedvsteiicatecessssinaceccerssaidencccesagdaaeccteceandsdcedencerssalscoteceengaisadecedusteaiiaverderssalabect 4 4 kg CAR CNG mee 5750m E rin e NEE E
39. rective 2000 14 EC EC type examination certificates have been issued by the following approved body following the requirements set out in EMC Directive 89 336 EEC by SLG Certificate No 1005240 To effect correct application of the health and safety requirements stated in the EEC directives the following European and or national standards and or technical specifications were consulted DIN EN 608 12 94 EN292 1 1991 EN292 2 1991 ISO 7182 1991 ISO 3767 5 1992 ISO 3864 1984 ISO 6531 1982 ISO 6533 1993 ISO 6534 1992 ISO 6535 1991 ISO 7293 1983 ISO 7505 1986 ISO 7914 1986 ISO 7915 1991 ISO 8334 1985 ISO DIS 9207 1991 ISO 9518 1992 ISO 10726 1992 CISPR 12 1990 Wayne Hill Homelite Consumer Products Inc Director Environmental Compliance 1428 Pearman Dairy Road Anderson SC 29625 USA pcm un January 24 2003 UK Page 39 OPERATOR S MANUAL CSP3816 UT74123A 406 mm 16 38cc Chainsaw CSP4518 UT74125A 457 mm 18 45cc Chainsaw CSP4520 UT74127A 508 mm 20 45cc Chainsaw 983000 210 2 03 Ryobi Technologies GmbH Itterpark 7 D 40724 Hilden Germany Tel 49 0 2103 29 58 0 Fax 49 0 2103 29 58 29 info ryobi rtg de Ryobi Technologies Customer Services Anvil House Tuns Lane Henley on Thames RG9 15 UK Homelite R T S A BP 50012 95945 Roissy CDG Cedex FRANCE Ryobi Technologies Australia PTY Limited 359 361 Horsley Road Milperra NSW 2214 Australia
40. roducts are guaranteed from defects material and workmanship for a period of twenty four 24 months effective and evidenced from date of original invoice or delivery note Defects caused by normal wear and tear unauthorised improper maintenance handling or overload are excluded from this guarantee as are accessories such as battery packs bulbs blades and bits etc In the event of malfunction within the guarantee period please return the assembled product with proof of purchase to your dealer or nearest Homelite service Centre Your statutory rights in respect of defective products remain unaffected by the warranty Ryobi Technologies GmbH Itterpark 7 D 40724 Hilden Germany Ryobi Technologies Customer Services Anvil House Tuns Lane Henley on Thames RG9 1SA UK Homelite R T S A BP 50012 95945 Roissy CDG Cedex FRANCE Ryobi Technologies Australia PTY Limited 359 361 Horsley Road Milperra NSW 2214 Australia SAFETY DIRECTIVE EC DECLARATION OF CONFORMITY According to machinery directive 98 37 EC and EMC directive 89 336 EEC We Homelite Consumer Products Inc 1428 Pearman Dairy Road Anderson SC 29625 USA Declare in sole responsibility that the product CSP3816 UT74123A CSP4518 UT74125A and CSP4520 UT74127A to which this certificate applies conforms to the basic health and safety requirements of the Machinery Directive 98 37 EC and other relevant directives such as EMC Directive 89 336 EEC and Outdoor Di
41. roper grip on the saw whenever the engine is running The fingers should encircle the handle and the thumb be wrapped under the handlebar This grip is least likely to be broken by a kick back or other sudden reaction of the saw Any grip in which the thumb and fingers are on the same side of the handle is dangerous because a slight kick of the saw can cause loss of control CHAIN LINE gt A WARNING DO NOT operate the throttle trigger with your left hand and hold the front handle with your right hand Never allow any part of your body to be in the chain line while operating a saw PROPER CUTTING STANCE Balance your weight with both feet on solid ground Keep left arm with elbow locked in a straight arm position to withstand any kick back force Keep your body to the left of the chain line Keep your thumb on underside of handlebar STRAIGHT THUMB ON CHAIN LINE ARM UNDERSIDE OF HANDLE BAR UK Page 17 OPERATION BASIC OPERATING CUTTING PROCEDURES Practise cutting a few small logs using the following technique to get the feel of using your saw before you begin a major sawing operation 1 Take the proper stance in front of the wood with the saw idling 2 Accelerate the engine to full throttle just before entering the cut by squeezing the throttle trigger 3 Begin cutting with the saw against the log 4 Keep the engine at full throttle the entire time you are cutting 5
42. s process until sagging does not exist TENSIONING 17 Hold the tip of the guide bar up and tighten the bar mounting nuts securely The chain is correctly tensioned when there is no sagging on the underside of the guide bar and the chain is snug but can be turned by hand without binding Ensure that the chain brake is not set See Figure 51 NOTE If chain is too tight it will not rotate Loosen the bar nuts slightly and turn the tension adjuster a quarter turn anticlockwise Lift the tip of the guide bar up and retighten the bar nuts securely Ensure that the chain will rotate without binding UK Page 28 MAINTENANCE ADJUSTING THE CHAIN TENSION A WARNING Never touch or adjust the chain while the motor is running The saw chain is very sharp Always wear protective gloves when performing maintenance on the chain 1 Stop the engine before setting the chain tension APPROXIMATELY 1 25 mm 2 Make sure the guide bar nuts are loosened to finger tight and turn the chain tensioner clockwise to tension the chain APPROXIMA NOTE cold chain is correctly tensioned when there is een no slack on the underside of the guide bar the chain is J snug and can be turned by hand without binding E 3 Re tension the chain whenever the flats on the drive links hang out of the bar groove NOTE During normal saw operation the temperature CHAIN MAINTENANCE of the chain increases The drive links
43. throttle trigger and let the engine return to idle To stop the engine move the ignition switch to the O stop position Do not put the chainsaw on the ground when the chain is still moving For additional safety set the chain brake when the saw is not in use In the event that the ignition switch will not stop the saw pull the choke lever out to the fully extended position Full Choke 1 and engage chain brake to stop the engine If the ignition switch will not stop the saw when set to the stop position have the ignition switch repaired before using the chainsaw again to prevent unsafe conditions or serious injury Important When you have finished using the saw relieve tank pressures by loosening the CHAIN OIL and FUEL MIX caps Then retighten the caps Allow the engine to cool before storing IGNITION SWITCH IN THE STOP POSITION UK Page 16 OPERATION PREPARING FOR CUTTING PROPER GRIP ON HANDLES Refer to Specific Safety Rules Safety Apparel earlier in this manual for appropriate safety equipment Wear non slip gloves for maximum grip and protection Hold the saw firmly with both hands Always keep your LEFT HAND on the front handle and your RIGHT HAND on the rear handle so that your body is to the left of the chain line See Figure 20 A WARNING Never use a left handed cross handed grip or any stance which would place your body or arm across the chain line Maintain a p
44. usting the carburettor clean the air filter and the starter cover vents Allow the engine to warm up before carburettor adjustment Refer to Maintenance later in this manual AIR FILTER STARTER COVER VENTS The carburettor is factory set and should not require adjust ing The carburettor will permit only limited adjustment of the L Low Jet and H High Jet needles Any adjustment should be done by a Homelite service dealer Under no circumstances should the L Low Jet and High Jet needles be forced outside the range of adjustment A CAUTION Serious damage may occur to the engine if improper adjustments are made to the L and H needles Do not force the L and H needles outside the adjustment range UK Page 18 OPERATION ADJUSTING IDLING SPEED lll the engine starts runs and accelerates but will not idle turn the idling speed screw clockwise to increase idling speed lll the chain turns at idle turn the idling speed screw anticlockwise to reduce the idling RPM and stop the chain movement If the saw chain still moves at idling speed contact a Homelite service dealer for adjustment and discontinue use until the repair is made A WARNING THE SAW CHAIN SHOULD NEVER TURN AT IDLE Turn the idling speed screw T anticlockwise to reduce the idling RPM and stop the chain or contact a Homelite service dealer for adjustment and discont
45. void pinching with just standard cutting techniques or difficult to predict which way a log will settle when cut BUCKING WITH A WEDGE If the wood diameter is large enough for you to insert a soft bucking wedge without touching the chain use the wedge to hold the cut open to prevent pinching NOTE When bucking or felling with a wedge you may need to remove the SAFE T TIP anti kick back device to allow the bar to be drawn through the cut After you complete the job reinstall the tip UK Page 23 OPERATION BUCKING LOGS UNDER STRESS Make the first bucking cut one third of the way through the log and finish with a two thirds cut on the opposite side As you cut the log it will tend to bend The saw may become pinched or hung in the log if you make the first cut deeper than a third of the diameter of the log Give special attention to logs under stress to prevent the bar and chain from pinching OVER BUCKING See Figure 38 Begin on the top side of the log with the bottom of the saw against the log exert light pressure downward Note that the saw will tend to pull away from you LOG SUPPORTED AT ONE END FINISHING CUT LOAD 1ST CUT 1 3 DIA UNDER BUCKING LOG SUPPORTED AT BOTH ENDS See Figure 38 Begin on the under side of the log with the top of the saw against the log exert light pressure upwards During under bucking the saw will tend to push back at you Be prepared for this reaction and h
46. w works READ ALL INSTRUCTIONS KNOW YOUR TOOL Read the operator s manual carefully Learn the saw s applications and limitations as well as the specific potential hazards related to this tool CHAINSAWS are designed for cutting wood only KICK BACK MAY OCCUR WHEN THE NOSE OR OF THE GUIDE BAR touches an object or when the wood closes in and pinches the saw chain in the cut Tip contact in some cases may cause a lightning fast reverse reaction kicking the guide bar up and back toward the operator Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator Either of these reactions may cause you to lose control of the saw which could result in serious personal injury DO NOT rely exclusively on the safety devices built into the saw As a chainsaw user you should take several steps to keep cutting jobs free from accident or injury 1 With a basic understanding of kick back you can reduce or eliminate the element of surprise Sudden surprise contributes to accidents 2 Keep a good firm grip on the saw with both hands when the engine is running Place your right hand on the rear handle and your left hand on the front handle with thumbs and fingers encircling the chainsaw handles A firm grip together with a stiff left arm will help you maintain control of the saw if kick back occurs 3 Make sure that the area in which you are cutting is free from obstructi
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