Husqvarna 966451906 manual English

Page 37

Repair Instructions

7

Dismantle the pump cover H and carefully remove the control diaphragm J and gasket K.

8

Unscrew screw P and remove needle valve M with lever arm Q, shaft L and spring R.

9

Use a needle or similar device and carefully pull up the fuel screen (W). See figure 39.

10

If necessary, dismantle throttle valve T and choke valve U and air valve S, and remove the shafts with lever arms and springs (see figure 39).

11

If necessary, dismantle the AutoTune AB unit. See figure 39.

 

H

 

J

 

K

L

Q

M

R

P

 

Fig 38

 

English - 37

Image 37
Contents 562XP/XPG Page Contents Index Vibration damping system Contents Introduction and safety regulationsIntroduction and safety instructions Special Instructions General InstructionsSymbols in the Workshop Manual Symbols on the sawTechnical data NGK CMR6H 12a Service tools12b 13d 13a 13b 13c Key Service dataEnglish Contents Safety equipmentDismantling the chain brake Cleaning and inspectionAlt Assembling the chain brake Assembling the muffler Dismantling the mufflerFunctional inspection Do not touch the muffler until it has cooled. Risk of burnsDismantling the start/stop control Replacing the chain catcherResistance test stop function Assembling the start/stop controlCleaning and inspection Safety equipment Repair instructions Dismantling the starter Cleaning and inspection Clean the parts and checkTensioning the return spring Replacing a broken or worn starter cordWear protective glasses Replacing a broken return spring Starter assemblyDismantling the ignition module and flywheel Assembling the ignition module and flywheel Min 60 mm Dismantling the centrifugal clutchDismantling the oil pump and screen Assembly of centrifugal clutchDismantling the intake system Assembling the oil pump and screenAssembling the intake system Design CarburettorFunction Dismantling the carburettor English Assembly Cleaning and inspection Clean all units in clean petrolEnglish Fitting on the saw Pressure testing the carburettorMake sure that the following components are correctly fitted Venting the fuel tank Tank unitTest Opening pressure outwards Opening pressure inwardsVibration damping system Replacing the fuel hose/return hose Replacing the fuel filterReplacing the fuel pump Purge DismantleDismantling the piston and cylinder English Assembling the piston and cylinder Faults and causes Score marks on the piston aCarbon build-up B Piston ring breakageLoosen Pressure testing the cylinderDismantling the crankshaft and crankcase Page Repair Instructions Sealing rings Assembling a complete crankshaft Replacing the bar bolt Repairing damaged threadsReplacing a bar bolt with intact crankcase English Troubleshooting Starting TroubleshootingIdling low speed High speed Troubleshooting methodsAcceleration and retardation 2011W31 115 26