Husqvarna 966451906 manual Dismantling the chain brake, Cleaning and inspection, Alt

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Safety equipment

6 Safety equipment

6.1 Dismantling the chain brake

1

Remove the cylinder cover.

Release the brake by moving the front hand guard backward.

Loosen the bar nuts and remove the clutch cover, bar and chain, see fig. 1.

2

Unscrew the kickback guard and remove it. NOTE! Make sure that the spring and rocker do not fly out.

Carefully tighten the clutch housing in a vice. Re- lease the brake by using the saw’s hand guard as a tool. Mesh with the brake and tighten anti-clock- wise until the brake is activated, see fig. 2.

3

Loosen the screws and insert a screwdriver to maintain pressure on the spring, and then carefully remove the cover over the brake spring, see fig. 3.

WARNING!

Exercise care to ensure the spring does not fly out and cause personal injury. Wear protective goggles.

4

Hold one hand on top of the brake spring and press in a small screwdriver into the spring. Care- fully bend upwards until the spring is released and it slides onto the screwdriver, see fig. 4.

Cleaning and inspection

• Clean and check carefully all components. Parts must be replaced if cracked or show signs of other defects. Always use original spare parts.

Measure the thickness of the chain brake band. It must not be less than 0.6 mm in any place. See figure 5.

• Lubricate the knee joint with grease.

Fig 1

Alt. 1

Alt. 2

Fig 2

Fig 3

Fig 4

Fig 5

English - 17

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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 12b Service tools12a 13d 13a 13b 13c Key Service dataEnglish Contents Safety equipmentAlt Cleaning and inspectionDismantling the chain brake 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 checkWear protective glasses Replacing a broken or worn starter cordTensioning the return spring 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 a bar bolt with intact crankcase Repairing damaged threadsReplacing the bar bolt English Troubleshooting Idling low speed TroubleshootingStarting Acceleration and retardation Troubleshooting methodsHigh speed 2011W31 115 26