Husqvarna 966451906 manual Dismantling the muffler, Assembling the muffler, Functional inspection

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Safety equipment

NOTE!

After repairing, the chain brake must be in- spected in line with the instruction below.

Functional inspection:

Do not turn on the motor when carrying out this inspection.

Bar length

Height

38 cm/15”

50 cm/20"

Hold the chain saw over a stable surface. The distance between the bar and the surface is shown in the table above.

Let go of the front handle and let the chain saw drop toward the surface underneath.

When the bar hits the surface the chain brake must trigger.

6.3Dismantling the muffler

WARNING!

Do not touch the muffler until it has cooled. Risk of burns.

1

Remove the cylinder cover, muffler, gasket and cooling fin.

2

The saw is fitted with spark arrestor mesh, which is removed. If necessary, use the combination span- ner to push down the plate edge and remove the spark arrestor mesh. See figure 12.

Cleaning and inspection

Clean and check all components carefully.

Parts must be replaced if cracked or show signs of other defects. Always use original spare parts. The spark arrestor mesh is best cleaned with a wire brush.

The mesh must be replaced, if damaged.

The saw will overheat if the mesh is clogged result- ing in damage to the cylinder and piston.

Never use a saw with a clogged or defective muffler.

6.4 Assembling the muffler

1

If the saw is fitted with a spark arrestor mesh, put it in place first. When fitting the mesh, make sure that the mesh is inserted in the right position. If necessary, use the combination spanner to insert the mesh.

2

Fit the:

• cooling fin

• gasket

• muffler, tightening torque of 12-14 Nm.

• Cylinder cover

3

Warm up the saw for at least one minute and retighten the screws on the muffler to 12 to 14 Nm.

Fig 11

Fig 12

English - 19

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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 Do not touch the muffler until it has cooled. Risk of burns Dismantling the mufflerAssembling the muffler Functional inspectionDismantling 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 Opening pressure inwards Tank unitVenting the fuel tank Test Opening pressure outwardsVibration damping system Dismantle Replacing the fuel filterReplacing the fuel hose/return hose Replacing the fuel pump PurgeDismantling the piston and cylinder English Piston ring breakage Faults and causes Score marks on the piston aAssembling the piston and cylinder Carbon build-up BLoosen 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