Husqvarna TC449 Workshop Manual page 109

1 edition (08-2010) _Rev. 11-2010
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ENGINE DISASSEMBLY/REASSEMBLY
Clutch housing clearance reading ..........................................................28
Clutch housing assembly ........................................................................30
Clutch hub assembly ..............................................................................30
Removing clutch plates ...........................................................................30
Pressure plate assembly ........................................................................31
Clutch cover assembly ............................................................................31
Replacing clutch disengagement bearing. ................................................ 32
Clutch disengagement bearing disassembly ..........................................32
Clutch disengagement bearing assembly ...............................................32
Checking the clutch pack thickness ......................................................... 32
Engine right crankcase. ............................................................................... 33
Engine right crankcase cover disassembly .............................................33
Engine right crankcase cover assembly .................................................33
Clutch thrust washer. ................................................................................... 35
Clutch thrust washer disassembly ..........................................................35
Clutch thrust washer assembly ...............................................................35
Clutch housing axial bearing. ..................................................................... 36
Clutch housing axial bearing disassembly ..............................................36
Clutch housing axial bearing assembly ..................................................36
Coolant pump disassembly and assembly ...............................................37
Coolant pump cover disassembly ...........................................................37
Coolant pump rotor disassembly ............................................................37
Coolant pump rotor assembly .................................................................38
Coolant pump cover assembly ...............................................................38
Coolant pump inside crankcase oil seal replacement
(crankcase cover removed) ........................................................................39
Coolant pump control rear oil seal disassembly .....................................39
Coolant pump control shaft check ..........................................................39
Coolant pump control rear oil seal assembly ..........................................39
Coolant pump drive replacement (crankcase cover removed) ................ 40
Slider loosening at the lower area ..........................................................40
Coolant pump shaft disassembly ............................................................40
Coolant pump shaft assembly ................................................................41
Slider assembly at the lower area ...........................................................41
Chain front sprocket. ...................................................................................42
Chain front sprocket removal .................................................................42
Front sprocket assembly .........................................................................42
Chain tensioner disassembly and reassembly or replacement ............... 43
Chain tensioner disassembly ..................................................................43
Chain tensioner assembly ......................................................................43
Cylinder head disassembly and reassembly/head gasket
replacement. ................................................................................................. 44
Preliminary operations ............................................................................. 44
Cylinder head disassembly .....................................................................44
Cylinder head assembly ........................................................................44
Cylinder head replacement (cylinder head removed). .............................. 45
Valve disassembly ..................................................................................45
Removing valve spring ...........................................................................46
Removing valve stem seal ......................................................................46
Rocker arm disassembly ........................................................................47
Rocker arm shaft disassembly ................................................................47
Valve seat width check ...........................................................................48
Valve guide clearance check ..................................................................48
Rocker arm shaft assembly ....................................................................49
Rocker arm assembly .............................................................................50
Fitting valve stem seal ............................................................................50
Valve spring assembly ............................................................................50
Valves assembly .....................................................................................51
Chain slider. .................................................................................................. 52
F1.3