Zenoah G500AVS User's Manual
Contents
1. 350 16 400 18 450 Saw chain TYDS nesia ar n rA Oregon 21BP FTC ea e wale Or tates 0 325 8 26 Gauge InN MIM nsienmeicdccsnveauiaon 0 058 1 27 Power kw min AOA raare ien iiia 2 06 9 000 CO AVS ea an A A 2 51 10 000 Max speed min CASSAVO 12 000 Eora V S R A A cn 13 000 Idle speed min GAD AY S sowie aa a ent narticewae 2 500 SO a a E onan 2 500 Specifications are subject to change without notice SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE COMPANY THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAIRURE OF A WARRANTED PARTS STILL UNDER WARRANTY THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLI GENCE OF INSTRUCTION LISTED IN THE OWNER OPERATOR MANUAL FOR PROPER USE AND MAIN TENANCE OF THE UNITS ACCIDENT MISHANDLING ALTERATION ABUSE IMPROPER LUBRICATION USE OF ANY PARTS OR ACCESSARIES OTHER THAN THOSE SPECIFIED BY THE COMPANY OR OTHER CAUSES BEYOND THE COMPANY S CONTROL THIS WARRANTY DOES NOT COVER THOSE PARTS REPLACED BY NORMAL WEAR OR HARMLESS CHANGES IN THEIR APPEARANCE THERE ARE NO OTHER EXPRESS WARRANTIES IMPLIED WARRANTIES INCLUDING THOSE OF MER CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO TWO 2 YEARS OF HOME USE ONE 1 YEAR FOR ANY OTHER USE FROM THE ORIGINAL DELIVERY DATE LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL DAMAGE UNDER ANY AND ALL WARRANTIES ARE EXCLUDED IF YOU NEED TO OBTAIN MOR2. USA Canada 87AL e f you use a gasoline of a lower octane value than prescribed there is a danger that the engine tem perature may rise and an engine problem such as piston seizing may consequently occur Unleaded gasoline is recommended to reduce the contamination of the air for the sake of your health and the environment Poor quality gasolines or oils may damage sealing rings fuel lines or fuel tank of the engine E HOWTO MIX FUEL A WARNING e Pay attention to agitation 1 Measure out the quantities of gasoline and oil to be mixed 2 Putsome of the gasoline into a clean approved fuel container 3 Pour in all of the oil and agitate well 4 Pour in the rest of gasoline and agitate again for at least one minute AS some oils may be difficult to GB 8 agitate depending on oil ingredients sufficient agi tation is necessary for the engine to last long Be careful that if the agitation is insufficient there is an increased danger of early piston seizing due to ab normally lean mixture 5 Puta clear indication on the outside of the container to avoid mixing up with gasoline or other containers 6 Indicate the contents on outside of container for easy identification E FUELING THE UNIT 1 Untwist and remove the fuel cap Rest the cap ona dustless place 2 Put fuel into the fuel tank to 80 of the full capacity 3 Fasten the fuel cap securely and wipe up any fuel spillage around the unit A WARNIN
3. Front of the chain cover GB 6 G455AVS GSOOAVS 3 Installing Guide Bar and Saw Chain A standard saw unit package contains the items as illustrated Power unit Bar protector Guide bar Saw chain Open the box and install the guide bar and the saw chain on the power unit as follows A WARNING e The saw chain has very sharp edges Use thick protective gloves for safety wk Pull the guard towards the front handle to check that the chain brake is not engaged 2 Loosen the nuts and remove the chain cover 3 Install the attached spike to the power unit 4 Gear the chain to the sprocket and while fitting the saw chain around the guide bar mount the guide bar to the power unit Adjust the position of chain tensioner nut on the chain cover to the lower hole of guide bar pe wre 7 Fae DE A aaee O s 1 Hole 2 Tensioner nut 3 Chain cover Pay attention to the correct direction of the saw chain Moving direction Screwdriver for carburetor adjustment Plug wrench 5 Fitthe chain cover to the power unit and fasten the nuts to finger tightness 6 While holding up the tip of the bar adjust the chain tension by turning the tensioner screw until the tie straps just touch the bottom side of the bar rail 1 Tensioner screw 2 Loosen 3 Tighten 7 Tighten the nuts securely with the bar tip held up 12 15 N m Then check the chain for smooth ro tation and proper tension wh
4. a ra r ai 12 8 Maintenance of Saw Chain and Guide Bar cceeeeee eee 13 9 Troubleshooting Guda srneseiaaar rinan a EA E r 14 VQ DISPOSA l nadin a EA EA avons 14 Ti OOS CIC AMONG a a cd senitalacnameeenconmuete 15 GB 3 G455AVS GSOOAVS 1 For safe operation GB 4 Never operate a chain saw when you are fatigued ill or upset or under the influence of medica tion that may make you drowsy or if you are under the influence of alcohol or drugs Use safety footwear snug fitting clothing and eye hearing and head protection devices Use the vibration proof glove Keep the saw chain sharp and the saw including the AV system well maintained A dull chain will increase Cutting time and press ing a dull chain through wood will increase the vibrations transmit ted to your hands A saw with loose components or with dam aged or worn AV buffers will also tend to have higher vibration lev els All the above mentioned precau tions do not guarantee that you will not sustain whitefinger diseaseor carpal tunnel syn drome Therefore continual and regular users should monitor closely the condition of their hands and fingers If any of the above symptoms appear seek medical advice immediately Always use caution when han dling fuel Wipe up all spills and then move the chain saw at least 3 m from the fueling point before starting the engine Eliminate all sources of sparks or flame i
5. oil filter through the filler port and clean in gasoline When putting the filter back into the tank make sure that it comes to the front right corner Also clean off dirt in the tank G455AVS G500AVS 4 Spark plug 0 6 0 7 mm G455AVS GS00AVS Clean the electrodes with a wire brush and reset the gap to 0 65 mm as necessary Champion NGK RCJ 7Y BPM7A RCJ 6Y BPM8Y 5 Sprocket Check for cracks and for excessive wear interfering with the chain drive If the wear is considerable replace it with new one Never fit a new chain on a worn sprocket or a worn chain on a new sprocket 6 Front and Rear dampers Replace if adhered part is peeled or crack is observed on the rubber part 8 Maintenance of Saw Chain and Guide Bar E Saw Chain A WARNING e It is very important for smooth and safe operation to always keep the cutters sharp The cutters need to be sharpened when e Sawdust becomes powder like e You need extra force to Saw in e The cut path does not go straight e Vibration increases e Fuel consumption increases Cutter setting standards A WARNING e Be sure to wear safety gloves Before filing e Make sure the saw chain is held securely e Make sure the engine is stopped e Use around file of proper size for the chain Chain type 21BP File size 3 16 in 4 76 mm Place the file on the cutter and push straight forward Keep the file position as illustrated After each cu
6. separately sold 22881 98610 snow protector 6 Sawing e Before proceeding to your job read the section For Safe Op eration It is recommended to first practice sawing easy logs This also helps you get accus tomed to your unit e Always follow the safety regu lations The chain saw must only be used for cutting wood It is forbidden to cut other types of material Vibrations and kickback vary with differ ent materials and the require ments of the safety regulations would not be respected Do not use the chain saw as a lever for lifting moving or splitting ob jects Do not lock it over fixed stands It is forbidden to hitch tools or applications to the PTO other than those specified by the manufacturer e lt is not necessary to force the saw into the cut Apply only light pressure while running the engine at full throttle When the saw chain is caught in the cut do not attempt to pull it out by force but use a wedge or a lever to open the way E GUARD AGAINST KICKBACK This saw is equipped with a chain brake that will stop the chain in the event of kickback if operating prop erly You must check the chain brake operation before each usage by run ning the saw at full the throttle for 2 seconds and pushing the front hand guard forward The chain should stop immediately with the en G455AVS GSOOAVS gine at full soeed If the chain is slow to stop or does not stop replace the brake ban
7. which acts on the weight fitted inside the front guard This brake can also be operated manually with the front guard turned down to the guide bar To release the brake pull up the front guard toward the front handle till a click sound is heard a b Caution Be sure to confirm brake operation during daily inspec tion How to confirm 1 Turn off the engine 2 Holding the chain saw horizontally release your hand from the front handle hit the tip of the guide bar toa stump or a piece of wood and confirm brake op eration Operating level varies by bar size AB Ned Ub In case the brake is not effective ask our dealer for inspection and repairs If the engine keeps rotating at high speed with the brake engaged the clutch will overheat causing trouble When the brake engages during operation immediately release the throttle lever to stop the engine GB 10 E STOPPING THE ENGINE 1 Release the throttle lever to allow the engine to idle for a few minutes 2 Set the switch to the O STOP position Carburetor anti freeze mechanism Operating chain saws in temperatures of 0 5 C at times of high humidity may result in ice forming within the car buretor and this in turn may cause the output power of the engine to be reduced or for the engine to fail to op erate smoothly This product has accordingly been designed with a ven tilation hatch on the right side of the surface of the cyl
8. 848C8193A4 806 zenoar OWNER S MANUAL i CHAIN SAW G455AVS A WARNING A Before using our products please read this manual carefully to understand the proper use of your unit G455AVS GSOOAVS EXPLANATION OF SYMBOLS AND SAFETY WARNINGS Read operator s instruction book before operating this machine Wear head eye and ear protection Use the chain saw Warning Danger of with two hands kickback Read understand and follow all warnings WARNING RISK OF DAMAGING HEARING Wear head eye and ear protection MODEL SOUND LEVEL VIBRATION LEVEL EN 608 1SO 7505 APPROVAL NUMBER OF CE EXHAUST EMISSION REGULATION 2002 88 EC G455AVS e13 97 68SH2G3 2002 88 0101 01 G500AVS e13 97 68SH2G3 2002 88 0102 02 GB 2 DECLARATION OF CONFORMITY TO MACHINES DIRECTIVE Directive 98 37 EC 89 336 EEC and to the regulations governing transposition Internal control production MANUFACTURER Husqvarna Zenoah Co Ltd No 9 1 Chome MINAMIDAI KAWAGOE City SAITAMA JAPAN DECLARES THAT THE DESIGN OF THE MACHINE DESCRIBED BELOW Model G455AVS18 Serial no 800001 and up Make ZENOAH CONFORMS TO THE REQUIRMENTS OF THE MODIFIED MACHINES DIRECTIVE Directive 98 37 EC 89 336 EEC AND TO THE NATIONAL REGULATIONS GOVERNING ITS TRANSPOSITION ABROAD AND THAT IT HAS BEEN ISSUED WITH A CE CERTIFICATE NO 380 080 A 0025 12 94 BY THE CENTRE TECHNIQUE DU BOIS ET DE LAMEUBLEMENT
9. 85 COUA ae E RN 4 90 Limited warranty Should any failure occur on the product under normal operating conditions within the applicable warranty pe riod the failed part will be replaced or repaired free of charge by a ZENOAH authorized dealer WARRANTY PERIOD 1 year 6 months if used profes sionally and 30 days if used for rental purpose from the date of initial purchase THE PURCHASER SHALL BEAR COSTS OF TRANS PORTING THE UNIT TO AND FROM THE ZENOAH DEALER THE PURCHASER SHALL NOT BE CHARGED FOR DI AGNOSTIC LABOR WHICH LEADS TO THE DETERMI NATION THAT A WARRANTED PART IS DEFECTIVE IF THE DIAGNOSTIC WORK IS PERFORMED AT THE ZENOAH DEALER THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE PERFORMANCE OF THE REQUIRED MAINTE NANCE AS DEFINED BY THE MANUFACTURER IN THE OWNER OPERATOR MANUAL ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE OR WHICH IS SCHEDULED ONLY FOR REGULAR IN SPECTION TO THE EFFECT OF REPAIR OR REPLACE AS NECESSARY SHALL BE WARRANTED FOR THE WARRANTY PERIOD ANY WARRANTED PART WHICH IS SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE SHALL BE WARRANTED FOR THE PERIOD OF TIME UP TO THE FIRST SCHEDULED REPLACEMENT POINT FOR THE PART ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DULABILITY MAY BE USED IN NON WARRANTY MAINTENANCE OR REPAIRS AND G455AVS G500AVS Cutting head Guide bar POs e a a Sprocket nose Size in MMJ aiocbes eae 14
10. E INFORMATION PLEASE CALL YOUR NEAREST SERVICE CENTER OR CHECK PLEASE ZENOAH WEB SITE htto www zenoah net GB 15
11. G 1 Select flat and bare ground for fueling 2 Move at least 10 feet 3 meters away from the fueling point before starting the engine 3 Stop the engine before refueling the unit At that time be sure to sufficiently agitate the mixed gasoline in the container E FOR YOUR ENGINE LIFE AVOID 1 FUEL WITH NO OIL RAW GASOLINE It will cause severe damage to the internal engine parts very quickly 2 GASOHOL It can cause deterioration of rubber and or plastic parts and disruption of engine lubrication 3 OIL FOR 4 CYCLE ENGINE USE It can cause spark plug fouling exhaust port blocking or piston ring sticking 4 Mixed fuels which have been left unused for a period of one month or more may clog the carbu retor and result in the engine failing to operate prop erly 5 In the case of storing the product for a long period of time clean the fuel tank after rendering it empty Next activate the engine and empty the carburetor of the composite fuel 6 In the case of scrapping the used mixed oil con tainer scrap it only at an authorized repository site As for details of quality assurance read the description in the section Limited Warranty carefully Moreover nor mal wear and change in product with no functional in fluence are not covered by the warranty Also be care ful that if the usage in the instruction manual is not ob served as to the mixed gasoline etc described therein it may not be covered by the w
12. TECHNICAL CENTRE FOR WOOD AND FURNITURE 10 AVENURE DE SAINT MANDE 75012 PARIS Signed in Saitama Japan 1st December 2007 Masahiko GOUDA General Manager Quality Assurance Department Contents G455AVS GSOOAVS DECLARATION OF CONFORMITY TO MACHINES DIRECTIVE Directive 98 37 EC 89 336 EEC and to the regulations governing transposition Internal control production MANUFACTURER Husqvarna Zenoah Co Ltd No 9 1 Chome MINAMIDAI KAWAGOE City SAITAMA JAPAN DECLARES THAT THE DESIGN OF THE MACHINE DESCRIBED BELOW Model GSOOAVS18 Serial no 800001 and up Make ZENOAH CONFORMS TO THE REQUIRMENTS OF THE MODIFIED MACHINES DIRECTIVE Directive 98 37 EC 89 336 EEC AND TO THE NATIONAL REGULATIONS GOVERNING ITS TRANSPOSITION ABROAD AND THAT IT HAS BEEN ISSUED WITH A CE CERTIFICATE NO 380 080 A 0026 12 94 BY THE CENTRE TECHNIQUE DU BOIS ET DE LAMEUBLEMENT TECHNICAL CENTRE FOR WOOD AND FURNITURE 10 AVENURE DE SAINT MANDE 75012 PARIS Signed in Saitama Japan 1st December 2007 Masahiko GOUDA General Manager Quality Assurance Department te ROP SAIS ODETA ON 4 dict hadetinann dalatesa un araiicrag ds antennae ateatancaiind 4 2 Explanation of Symbols on the Machine cccccceeeeeee eee 6 3 Installing Guide Bar and Saw Chain ccccccceceeecceeeeseeeeeee eres 7 A gt Fear chain Qilich a eae shel tobi tala tee 8 5 gt Operin MS ENONSE serere 9 O OANINOAR O les 11 A Mainea E er ar
13. arranty E CHAIN OIL Use motor oil SAE 10W 30 all year round or SAE 30 40 in summer and SAE 20 in winter J E Do not use wasted or regenerated oil that can cause damage to the oil pump 5 Operating the Engine e It is very dangerous to run a chainsaw that mounts broken parts or lacks any parts Before starting engine make sure that all the parts including bar and chain are installed properly E STARTING THE ENGINE 1 Fill fuel and chain oil tanks respectively and tighten the caps securely 1 Chain oil When restarting immediately after stopping the engine leave the choke knob at the open position 4 While holding the saw unit securely on the ground pull the starter rope vigorously A WARNING e Do not start the engine while the chain saw hangs in one hand The saw chain may touch your body This in very dangerous 5 When engine has ignited first pull the throttle lever to return the choke knob to the open position and then pull the starter again to start the engine 6 Allow the engine to warm up with the throttle lever pulled slightly G455AVS GSOOAVS A WARNING e Keep clear of the saw chain as it will start rotating upon starting of engine E CHECKING THE OIL SUPPLY A WARNING e Make sure to set up the bar and the chain when checking the oil supply If not the rotating parts may be exposed It is very dangerous After starting the engine run the chain at medium speed an
14. d and clutch drum before USE e It is extremely important that the chain brake be checked for proper operation before each use and that OKO OIO OJ the chain be sharp in order to main tain the kickback safety level of this saw Removal of the safety devices inadequate maintenance or incor rect replacement of the bar or chain may increase the risk to serious per sonal injury due to kickback E FELLING ATREE Felling direction 4 Notch cut 1 D Q 2 Felling cut om ran 1 Decide the felling direction considering the wind lean of the tree location of heavy branches ease of completing the task after felling and other factors 2 While clearing the area around the tree arrange a good foothold and retreat path Make a notch cut one third of the way into the tree on the felling side Make a felling cut from the opposite side of the notch and at a level slightly higher than the bottom of the notch A WARNING e When you fell a tree be sure to warn neighboring workers of the danger w Bucking and Limbing A WARNING Always ensure your foothold Do not stand on the log Be alert to the rolling over of a cut log Especially when working on a slope stand on the uphill side of the log Follow the instructions in For Safe Operation to avoid kickback of the saw Before starting work check the direction of bending force inside the log to be cut Always finish cutting from the opposite side of th
15. d see if chain oil is scattered off as shown in the figure The chain oil flow can be changed by inserting a screw driver in the hole on bottom of the clutch side Adjust according to your work conditions Chain oil flow adjusting The oil tank should become nearly empty by the time fuel is used up Be sure to refill the oil tank every time when refueling the saw E ADJUSTING THE CARBURETOR The carburetor on your unit has been factory adjusted but may require fine tuning due to a change in operat ing conditions Before adjusting the carburetor make sure that the pro vided air fuel filters are clean and fresh and the fuel prop erly mixed When adjusting take the following steps Be sure to adjust the carburetor with the bar chain at tached GB 9 G455AVS GSOOAVS 1 H and L needles are restricted within the number of turn as shown below G455AVS G500AVS H needle 1 4 1 4 L needle 1 4 1 4 2 Start the engine and allow it to warm up in low speed for a few minutes 3 Turn the idle adjusting screw T counterclockwise so that the saw chain does not turn If the idling speed is too slow turn the screw clockwise 4 Make a test cut and adjust the H needle for best cutting power not for maximum speed E CHAIN BRAKE This machine is equipped with an automatic brake to stop saw chain rotation upon occurrence of kickback during saw cutting The brake is automatically operated by inertial force
16. ding Tree Cut up from the bottom finish down from the top A WARNING e Do not use an unstable foothold or ladder e Do not overreach e Do not cut above shoulder height e Always use both your hands to hold the saw 3 Guide bar When the guide bar is dismounted remove sawdust in the bar groove and the oiling port Grease the nose sprocket from the feeding port on the tip of the bar Grease port Sprocket 4 Others Check for fuel leakage and loose fastenings and damage to major parts especially handle joints and guide bar mounting If any defects are found make sure to have them repaired before operating the saw again E PERIODICAL SERVICE POINTS 1 Cylinder fins Dust clogging between the cylinder fins will cause overheat ing of the engine Periodically check and clean the cylinder fins after removing the air cleaner and the cylinder cover When installing the cylinder cover make sure that switch wires and grommets are positioned correctly in place Be sure to block the air intake hole 2 Fuel filter a Using a wire hook take out the filter from the filler port Fuel filter b Disassemble the filter and wash with gasoline or replace with a new one if needed REJ e After removing the filter use a pinch to hold the end of the suction pipe e When assembling the filter take care not to allow fil ter fibers or dust inside the suction pipe 3 Oil tank With a wire hook take out the
17. e Check spark ignition o with a new Case 2 Lack of power Poor acceleration Rough idling Check fuel for water or substandard mix ture Replace with proper fuel Check air filter and fuel filter for clog gt Clean ging Check carburetor for inadequate ad justment GB 14 Readjust speed needles Case 3 Oil does not come out Check oil for sub Replace Check oil passage and ports for clog Clean ging If the unit seems to need further service please consult with an authorized service shop in your area 11 Disposal When disposing your machine fuel or oil for the ma chine be sure to allow your local regulations 10 Specifications Power unit Displacement cm GASSANT a A 45 0 GOJAN Daeron a a E A RER 49 3 Fuel ice Mixture Gasoline 50 Two cycle oil 1 when using ZENOAH genuine oil Fuel tank Capacity CMS icesiceeerireerrirerrriren 550 CHa O beeen ete ere eee Motor oil SAE 10W 30 COMTADK capacity em ash aiiee wercrlocn sate tes cau cinnce 260 Carburetor snd stvrcredtenrvans Diaphragm type Walbro WT IOMILION SyS leee a S Pointless CDI Spark plug GAON a ni Champion RCJ 7Y OOO Va AEA Champion RCJ 6Y Oil feeding system Automatic pump with adjuster Sprocket Teeth x Pitch cicc FTX 0325 Dimensions L x W x H MM aaan 410 x 235 x 265 Dry weight Power unit only kg EAE OAS ath E ersaa E EA T E A tom 4
18. e smoking open flames or work that can cause sparks in the areas where fuel is mixed poured or stored Do not smoke while handling fuel or while operating the chain saw Do not allow other persons to be near the chain saw when start ing or cutting Keep bystanders and animals out of the work area Children pets and bystanders should be a minimum of 10 m away when you start or operate the chain saw Never start cutting until you have a clear work area secure foot ing and a planned retreat path from the falling tree 10 Always hold the chain saw firmly with both hands when the engine is running Use a firm grip with thumb and fingers encircling the chain saw handles 11 Keep all parts of your body away from the saw chain when the en gine Is running 12 Before you start the engine make sure the saw chain is not contacting anything 13 Always carry the chain saw with the engine stopped the guide bar and saw chain to the rear and the muffler away from your body 14 Always inspect the chain saw be fore each use for worn loose or damaged parts Never operate a chain saw that is damaged im properly adjusted or is not com pletely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is released 15 All chain saw service other than the items listed in the Owner s Manual should be performed by competent chain saw ser
19. e bending direction to prevent the guide bar from being caught in the cut GB 11 G455AVS GSOOAVS A log lying on the ground saw down halfway then roll the log over and cut from the opposite side A log hanging off the ground In area A saw up from the bottom one third and finish by sawing down from the top In area B saw down from the top one third and finish by sawing up from the bot tom Cutting the limbs of Fallen Tree Vor gt 7 Maintenance e Before cleaning the inspecting or repairing the unit make sure that engine has stopped and is cool Dis connect the spark plug to prevent accidental starting E MAINTENANCE AFTER EACH USE 1 Air filter Dust on the cleaner surface can be removed by tapping a corner of the cleaner against a hard surface To clean dirt in the meshes split the cleaner into halves and brush in gaso line When using compressed air blow from the inside To assemble the cleaner halves press the rim until it clicks EF When installing the main filter make sure that the grooves on the filter edge are correctly fit with the projections on the cylinder cover 2 Oiling port Dismount the guide bar and check the oiling port for clogging GB 12 First check to which side the limb is bent Then make the initial cut from the bent side and finish by sawing from the opposite side A WARNING e Be alert to the springing back of a cut limb Pruning of Stan
20. ile moving it by hand If necessary readjust with the chain cover loose 8 Tighten the tensioner screw A new chain will expand its length in the beginning of use Check and readjust the tension frequently as a loose chain can easily derail or cause rapid wear of itself and the guide bar GB 7 G455AVS GSOOAVS 4 Fuel and Chain Oil E FUEL A WARNING e Gasoline is very flammable Avoid smoking or bringing any flame or sparks near fuel Make sure to stop the engine and allow it cool before refuel ing the unit Select outdoor bare ground for fuel ing and move at least 3 m 10 ft away from the fueling point before starting the engine r A The Zenoah engines are lubricated by oil specially formulated for air cooled 2 cycle gasoline engine use If Zenoah oil is not available use an anti oxidant added quality oil expressly labeled for air cooled 2 cycle engine use JASO FC GRADE OIL or ISO EGC GRADE Do not use BIA or TCW 2 stroke water cooling type mixed oil E RECOMMENDED MIXING RATIO GASOLINE 50 OIL 1 when using ZENOAH genuine oil e Exhaust emission are controlled by the funda mental engine parameters and components eq carburation ignition timing and port timing with out addition of any major hardware or the intro duction of an inert material during combustion e These engines are certified to operate on unleaded gasoline e Make sure to use gasoline with a minimum octane number of 89RON
21. in der cover to allow warm air to be supplied to the engine and to thereby prevent icing from occurring Under normal circumstances the product should be used in the normal operating mode i e in the mode to which it is set at the time of shioment However when the possibility exists that icing may occur the unit should be set to operate in the anti freeze mode before use 4 5 1 Air cleaner cover 4 Normal operating mode 2 Shutter plate 5 Anti freeze mode 3 Screw 6 Screen A WARNING e Continuing to use the product in the anti freeze mode even when temperatures have risen and returned to normal may result in the engine failing to start prop erly or in the engine failing to operate at its normal speed and for this reason you should always be sure to return the unit to the normal operating mode if there is no danger of icing occurring E HOW TO SWITCH BETWEEN OPERATING MODES Snow protector t Flip the engine switch to turn off the engine 2 Remove the air cleaner cover from the cylinder cover 3 Loosen a screw and remove the screen on the back of the air cleaner cover 4 Turn the screen a half and reinstall to the cover When using the saw with the anti freeze mode frequently check the screen and keep it clean of saw dust When using the unit at times when it is snowing Zenoah recommends that you also use a snow protector effec tive in preventing the air filter from freezing e g the
22. nsporting your chain saw make sure the appropriate guide bar scabbard is in place KICKBACK SAFETY PRECAU TIONS FOR CHAIN SAW USERS A WARNING Kickback may occur when the nose or tip of the guide bar touches an object or when the wood closes in and pinches the saw chain in the cut Tip con tact in some cases may cause A A D A A A w w r r A A A A SD A A Aaaa G455AVS G500AVS tion kicking the guide bar up and back towards 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 your saw As a chain saw user you should take several steps to keep cutting jobs free from ac cident or injury 1 With a basic understanding of kickback you can reduce or eliminate the element of surprise Sudden surprise contributes to accidents 2 Keep a good grip on the saw with both hands the right hand on the rear handle and the left hand on the front handle when the engine is running Use a firm grip with thumbs and fingers encircling the chain saw handles A firm grip will help you reduce kick back and maintain control of the saw 3 Make certain that the area in which you are cutting is free from obstructions Do not let the nose of the guide bar con
23. tact a log branch or any other obstruction which could be hit while you are operating the saw 4 Cut at high engine speeds 5 Do not overreach or cut above shoulder height 6 Follow the manufacturer s sharp ening and maintenance instruc tions for the saw chain 7 Only use replacement bars and chains specified by the manufac P T zenon Wewwwwwwweww a lightning fast reverse reac turer or the equivalent ware GB 5 G455AVS GSOOAVS 2 Explanation of Symbols on the Machine e For safe operation and maintenance symbols are carved in relief on the machine According to these indications please be careful not to make any mistake The port to refuel MIX GASOLINE Position Fuel cap Setting the switch to the position the engine starts Setting the switch to the O position the engine stops immediately Position Rear left of the unit a ee The port to top up chain oil Position Oil cap gt IN d Choke will close when pulling the choke knob Position Choke knob PULL H The screw under the H stamp is The High speed adjustment screw L The screw under the L stamp is The Slow speed adjustment screw T The screw at the left of the T stamp is the Idle adjustment screw Position Left side of the rear handle Shows the directions that the chain brake is released white arrow and activated black ar lt gt row O O Position
24. tter has been filed check the depth gauge and file it to the proper level as illustrated Make the shoulder round Depth gauge standard 21BP 025 0 64 mm GB 13 G455AVS GSOOAVS A WARNING e Be sure to round off the front edge to reduce the chance of kickback or tie strap breakage Make sure every cutter has the same length and edge angles as illustrated Cutter length S30 Filing angle eS i 85 E Side plate angle A No BED Top plate cutting angle E Guide Bar e Reverse the bar occasionally to prevent partial wear e The bar rail should always be square Check for wear of the bar rail Apply a ruler to the bar and the out side of a cutter If a gap is observed between them the rail is normal Otherwise the bar rail is worn such a bar needs to be corrected or replaced il Ruler gt pe E 1 4 Gap a 1 Ta kK l l A WARNING Chain tilts e This saw is equipped with one of the following low kickback bar chain combinations Zenoah Part Number Bar Size Guide Bar Saw Chain 14 3644 52112 3611 52210 21BP 16 3645 52113 3612 52210 21BP 18 3646 52113 3646 52210 21BP 9 Troubleshooting Guide Case 1 Starting failure A WARNING e Make sure the icing prevention system is not working Check fuel for water Replace with proper or substandard mix fel ture 4 Remove and dry the Check for engine spark plug flooding Then pull the starter again with no chok
25. vice personnel E g if improper tools are used to remove the flywheel or if an improper tool is used to hold the flywheel in order to re move the clutch structural dam age to the flywheel could occur which could subsequently cause the flywheel to disintegrate 16 Always shut off the engine be fore setting it down oa SN i F 17 18 19 Use extreme caution when cut ting small size brush and sap lings because slender material may catch the saw chain and be whipped toward you or pull you off balance When cutting a limb that is un der tension be alert for spring back so that you will not be struck when the tension in the wood fibers is released Never cut in high wind bad weather when visibility is poor or in very high or low temperatures Always check the tree for dead branches which could fall during the felling operation Keep the handles dry clean and free of oil or fuel mixture Operate the chain saw only in well ventilated areas Never start or run the engine inside a closed room or building Exhaust fumes contain dangerous carbon mon oxide Do not operate the chain saw in a tree unless specially trained to do so Guard against kickback Kick back is the upward motion of the guide bar which occurs when the saw Chain at the nose of the guide bar contacts an object Kickback can lead to dangerous loss of control of the chain saw When tra
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