OM, 625, 630, 670, 1998-04 - Jonsered

1 Please read these instructions carefully andmake sure you understand them before usingthe s manual2 EnglishSymbols on the chain saw:CAUTION! Chain saws can be dangerous!Careless or incorrect use can result inserious or fatal injury to the operator read the instructions carefully andmake sure you understand them beforeusing the wear: Approved protective helmet Approved hearing protection Protective glasses or visorSwitch off the engine by moving the stopswitch to the STOP position before carryingout any checks or wear approved protective cleaning is glasses or a visor must be TO SYMBOLSS ymbols in the operator s manual:English 3!CONTENTSC ontentsKey to symbols .. 2 Safety instructionsPersonal protective equipment.

2 4 Chain saw safety equipment ..4 Inspecting, maintaining and servicing chain saw safetyequipment .. 8 Cutting equipment ..10 How to avoid kickback ..16 General safety precautions ..18 General working instructions ..19 What is what?What is what? .. 24 AssemblyMounting guide bar and chain .. 25 Fuel handlingFuelmix .. 26 Fuelling .. 27 Start and stopStart and stop .. 28 MaintenanceCarburettor .. 29 Starter device .. 30 Air filter .. 31 Spark plug .. 31 Silencer .. 31 Needle bearing maintenance .. 31 Cooling system .. 32 Winter use .. 32 Daily maintenance .. 33 Weekly maintenance .. 33 Monthly maintenance .. 33 Technical data625 .. 34630 .. 34670 .. 34!A chain saw is a dangerous tool if usedcarelessly or incorrectly and can causeserious, even fatal injuries.

3 It is veryimportant that you read and understandthese no circumstances should you modifythe original design of the chain saw withoutapproval from the manufacturer. Always usegenuine spare parts. Unauthorizedmodifications or accessories may lead toserious injury or using a new saw Read the instructions carefully. Check cutting equipment is correctly fitted and adjusted. Seepage 25. Refuel and start the saw. Check the carburettor pages 26-29. Do not use the saw until sufficient chain oil has reached thechain, see page ! If the carburettor mixture is too lean it greatlyincreases the risk of engine maintenance of the air filter will cause carbon build-up onthe spark plug and lead to difficult the chain is badly adjusted it will cause increased wear ordamage to the bar, drive sprocket and English!

4 CHAIN SAW SAFETY EQUIPMENTThis section explains the various safety features of the saw,how they work, and basic inspection and maintenance youshould carry out to ensure safe operation. (See the What iswhat? section to find out where these components are on Yoursaw).NEVER USE A CHAIN SAW THAT HASFAULTY SAFETY EQUIPMENT! Carry out theinspection, maintenance and service routineslisted in this brake and fronthand guard2 Throttle lock3 Chain catcher4 Right hand guard5 Vibration damping system6 Stop switch7 Muffler8 Cutting equipment (see Cutting equipment section).SAFETY INSTRUCTIONS!PERSONAL PROTECTIVE EQUIPMENTMOST CHAIN SAW ACCIDENTS HAPPENWHEN THE CHAIN TOUCHES THE OPERA-TOR. You must wear approved protectiveequipment whenever you use a chain protective equipment cannoteliminate the risk of injury but it will reducethe degree of injury if an accident doeshappen.

5 Ask your chain saw dealer for helpin choosing the right equipment. PROTECTIVE HELMET HEARING PROTECTION PROTECTIVE GLASSESOR VISOR GLOVES WITHSAW PROTECTION PROTECTIVE TROUSERSWITH SAW PROTECTION BOOTS WITH SAWPROTECTION, STEELTOE-CAP AND NON-SLIPSOLEG enerally clothes should beclose-fitting without restrictingyour freedom of movement. ALWAYS HAVE A FIRSTAID KIT NEARBY!Long or continuous exposure to high noiselevels may cause permanent hearingimpairment. Always wear approved hearingprotection when operating a chain 51 Chain brake and front hand guardYOUR chain saw is equipped with a chain brake that is desig-ned to stop the chain immediately if you get a chain brake reduces the risk of accidents, but only You canprevent care when using yoursaw and make sure thekickback zone of the barnever touches any chain brake (A) caneither be activatedmanually (by your lefthand) or automatically bythe inertia releasemechanism (a free-swinging pendulum).

6 Onmost of our models thefront hand guard acts as acounterweight in case brake is appliedwhen the front handguard (B) is movement activatesa spring-loadedmechanism that tightensthe brake Band (C)around the engine drivesystem (D) (Clutch Drum).SAFETY INSTRUCTIONS2 The front hand guard isnot designed solely toactivate the chain important safetyfeature is that it preventsthe chain from hitting yourleft hand if you lose yourgrip on the front You can also use thechain brake as atemporary brake when youchange position or if youput the saw down for ashort time. You shouldalso apply the chain brakemanually if there is a riskof the chain accidentallyhitting anyone or anythingclose To release the chain brakepull the front hand guardbackwards, towards thefront As mentioned in section A,kickback can be verysudden and kickbacks areminor and do not alwaysactivate the chain this happens youshould hold the chainsaw firmly and not English6 The way the chain brake is triggered, either manually orautomatically.

7 Depends on the force of the kickback and theposition of the chain saw in relation to the object that thekickback zone of the bar you get a violentkickback while thekickback zone of the baris farthest away from youthe chain brake will beactivated by themovement of thecounterweight (INERTIAACTIVATED).If the kickback is lessviolent or the kickbackzone of the bar is closerto you the chain brake willbe activated manually bythe movement of your felling your lefthand grasps the fronthandle in such a way thatit cannot activate the fronthand guard. In thisposition the chain brakecan only be activated bythe inertia action of inertia activatedchain brake increasesyour safety but there arecertain factors toremember (see point 6above).

8 2 Throttle lockThe throttle lock is designedto prevent accidental opera-tion of the throttle you press the lock (A)( when you grasp thehandle) it releases the throttletrigger (B).When you release the handlethe throttle trigger and thethrottle lock both move backto their original positions. Thismovement is controlled by twoindependent return arrangement means thatthe throttle control isautomatically locked at theidle setting when you releasethe Chain catcherThe chain catcher is designedto catch the chain if it snaps orjumps off. This should nothappen if the chain is properlytensioned (see section on Assembly ) and if the bar andchain are properly servicedand maintained.(See section on Generalworking instructions ).

9 4 Right hand guardApart from protecting yourhand if the chain jumps orsnaps, the right hand guardstops branches and twigsfrom interfering with your gripon the rear INSTRUCTIONSE nglish 7!5 Vibration damping systemYour chain saw is equippedwith a vibration dampingsystem that is designed tominimise vibrations and makeoperation you use a chain sawvibrations are generated bythe uneven contact betweenthe chain and the wood youare hardwoods (mostbroadleaf trees) creates morevibration than cuttingsoftwoods (most conifers).Cutting with a chain that isblunt or faulty (wrong type orbadly sharpened, see sectionD) will increase the vibration damping systemreduces the vibrationstransmitted from the engineand chain to the handles ofthe chain saw.

10 The body ofthe saw, including the cuttingequipment, is insulated fromthe handles by vibrationdamping to vibration can lead tocirculatory damage or nerve damage in peoplewho have impaired your doctor if you experiencesymptoms of overexposure to symptoms include numbness, loss offeeling, tingling, pricking, pain, loss ofstrength, changes in skin colour or symptoms normally appear in thefingers, hands or INSTRUCTIONS!The exhaust fumes from the engine are hotand may contain sparks which can start a start the saw indoors or nearcombustible material!!The muffler gets very hot in use and remainsso for a short time afterwards. DO NOTTOUCH THE MUFFLER IF IT IS HOT!6 Stop switchUse the stop switch to switchoff the MufflerThe muffler is designed to keep noise levels to a minimum andto direct exhaust fumes away from the countries with a hot climatethere is a high risk of forestfires.