Husqvarna Workshop manual 340

Husqvarna Workshop manual 340, inne

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//-->Workshop manual340 345 346XP350 351 353EnglishMore user manuals onManualsBase.comWorkshop manualHusqvarna 340/345/346XP/350/351/353ContentsIntroduction........................................................... 2Safety regulations................................................. 3General instructions ........................................... 3Special instructions ............................................ 3Special tools.......................................................... 4Technical data....................................................... 6Construction and function................................... 8Carburettor ......................................................... 8Troubleshooting.................................................. 10Repair instructions............................................. 12Chain brake ...................................................... 12Silencer ............................................................ 14Chain catcher ................................................... 14Stop switch ....................................................... 15Stop switch – resistance measurement ........... 15Choke control ................................................... 16Throttle trigger .................................................. 17Hand grip heater .............................................. 18Starter assembly .............................................. 21Starter cord ...................................................... 21Recoil spring .................................................... 22Ignition module – testing .................................. 23Ignition module and flywheel ............................ 23Generator ......................................................... 24Centrifugal clutch ............................................. 26Oil pump ........................................................... 27Carburettor ....................................................... 30Carburettor – pressure testing ......................... 33Carburettor heater ............................................ 34Air intake system .............................................. 35Carburettor – adjustment ................................. 37Fuel tank .......................................................... 38Fuel filter .......................................................... 39Fuel hose ......................................................... 39Piston and cylinder ........................................... 41Decompression valve – pressure testing ......... 42Cylinder – pressure testing .............................. 44Crankcase and crankshaft ............................... 45Crankshaft bearings ......................................... 46Repairing damaged threads ............................. 49Thread insert .................................................... 49Guide bar bolts ................................................. 49Appendix A, Carburettor – EPA models........... 50English –1More user manuals onManualsBase.comIntroductionArrangement of the manualThis workshop manual can be used in two differentways.• To repair a specific sub-assembly on a chainsaw.• To dismantle and reassemble a completechainsaw.Repairing a specific sub-assemblyIf a specific sub-assembly on the chainsaw needsto be repaired:1. Look up the page referring to the relevant sub-assembly.2. Follow the instructions under the headings:Removal/DismantlingCleaning and inspectionRefitting/ReassemblyDismantling and reassembling the entirechainsawIf the entire chainsaw is to be dismantled, followthe instructions under the heading “Removal/Dismantling”.Work through the manual and follow the instruc-tions given in each section under the heading“Removal/Dismantling”.Then follow all the “Cleaning and inspection”instructions in each section.Working from the back of the manual, follow all theinstructions under the headings “Refitting/Reassembly” in reverse order.Each of the sections covering removal/dismantlingand refitting/reassembly include the relevantlubrication instructions and bolt torques for eachstage of repair.TroubleshootingThese pages describe the most common faults thataffect a chainsaw. They are divided into fourdifferent groups with the most likely faults de-scribed first.Repair instructionsThe section that describes how to repair thechainsaw consists of detailed, step-by-step instruc-tions. It explains in detail the special tools, lubri-cants and bolt torques that are needed whenworking on each component.This workshop manual covers the followingchainsaw models:340345346XP350351353Construction and functionThis chapter gives a simple description of thechainsaw carburettor and its various parts.2– EnglishMore user manuals onManualsBase.comSafety regulationsGeneral instructionsThis workshop manual gives detailed instructionson how to troubleshoot, repair and test a chainsaw.This section also describes the various safetyprecautions that should be taken when carrying outrepairs.The workshop manual has been written for person-nel who are assumed to have general experienceof repairing and servicing chainsaws.Workshops where chainsaws are repaired must beequipped with safety equipment that meets localregulations.No-one should carry out repairs on a chainsawuntil they have read and understood the contentsof this workshop manual.Chainsaws are type-approved to meet the relevantsafety legislation, but this only applies when thesaw is fitted with the cutting equipment specified inthe user’s manual. The fitting of any other equip-ment, or of accessories or parts that are notapproved by Jonsered, could mean that the saw nolonger meets these safety requirements and theperson who carried out the work may be heldresponsible for its non-conformance.In this workshop manual the following boxesindicate where caution should be taken.Special instructionsThe fuel that is used in a chainsaw poses thefollowing hazards:• The fuel and its fumes are toxic.• May cause irritation to skin or eyes.• May cause breathing difficulties.• Highly flammable.When using compressed air the air jet shouldnever be pointed at the body. Air can be forced intothe bloodstream and cause fatal injury.Wear ear protection when testing saws.After testing a saw do not touch the silencer until ithas cooled down. The silencer gets very hot andyou may burn yourself. Wear protective gloveswhen working on the silencer.The guide bar, chain and clutch cover (chain brake)must be fitted before the saw is started. If not, theclutch may come loose and cause injury.Poor chain lubrication can result in failure of thechain, which could cause serious or fatal injury.Take care to ensure that the spring inside thestarter assembly does not fly out and cause injury.Wear eye protection. If the spring is under com-pression when the pulley is removed it could fly outand cause injury.Before removing the tensioning spring from thechain brake, ensure that the brake is in the onposition, otherwise the spring may fly out andcause injury.After completing the repair the chain brake must betested, see “Chain brake – reassembly \ Operatingtest”.Always consider the fire risk. A chainsaw canproduce sparks that could start a fire.Inspect the chain catcher and replace it if it isdamaged.WARNING!The warning text warns of the riskof personal injury if the instruc-tions are not followed.NOTE!The warning text warns of the risk ofmaterial damage if the instructions arenot followed.English –3More user manuals onManualsBase.comSpecial tools12345678910111213144– EnglishMore user manuals onManualsBase.com [ Pobierz całość w formacie PDF ]