APRILIA QUASAR 125 2003 Workshop Manual page 51

ENGINE
3.1.1 COMPONENTS THAT CAN BE REMOVED WITH THE ENGINE INSTALLED ............................................ 3-4-00
3.1.2 REMOVING THE ENGINE FROM THE FRAME ............................................................................................. 3-5-00
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3.1.3 FITTING THE ENGINE IN THE FRAME.......................................................................................................... 3-8-00
3.2 HEAD UNIT .............................................................................................................................. 3-9-00
3.2.1 REMOVING PROTECTION FAN..................................................................................................................... 3-9-00
3.2.2 REMOVING FLYWHEEL UPPER AND LOWER HOUSINGS ........................................................................ 3-9-00
3.2.3 REMOVING THE INTAKE MANIFOLD ........................................................................................................... 3-9-00
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3.2.4 REMOVING THE HEAD ................................................................................................................................ 3-10-00
3.2.5 REMOVING THE TENSIONER ..................................................................................................................... 3-10-00
3.2.6 REMOVING CAMSHAFT COMPLETE MOUNT ........................................................................................... 3-11-00
3.2.7 REMOVING THE ROCKER ARMS ............................................................................................................... 3-11-00
3.2.8 REFITTING THE ROCKER ARMS................................................................................................................ 3-12-00
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3.2.9 REMOVING THE CAMSHAFT ...................................................................................................................... 3-13-00
3.2.10 CHECKING BEARING PARTS ..................................................................................................................... 3-13-00
3.2.11 REFITTING THE CAMSHAFT....................................................................................................................... 3-14-00
3.2.12 ADJUSTING VALVE CLEARANCE.............................................................................................................. 3-15-00
3.2.13 REMOVING THE HEAD ................................................................................................................................ 3-15-00
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3.2.14 CHECKING VALVES SEALING CAPACITY ................................................................................................ 3-15-00
3.2.15 REMOVING VALVES .................................................................................................................................... 3-16-00
3.2.16 CHECKS ........................................................................................................................................................ 3-16-00
3.2.17 VALVE SPRINGS FREE LENGTH................................................................................................................ 3-16-00
3.2.18 CHECKING VALVES AND VALVE SEATS.................................................................................................. 3-17-00
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3.2.19 GRINDING ..................................................................................................................................................... 3-17-00
3.2.20 CHECKING THE HEAD AND CYLINDER .................................................................................................... 3-18-00
3.2.21 REFITTING VALVES AND HEAD................................................................................................................. 3-19-00
3.2.22 REMOVING THE CYLINDER ........................................................................................................................ 3-20-00
3.2.23 REMOVING THE PISTON ............................................................................................................................. 3-20-00
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3.2.24 CHECKING THE CYLINDER ........................................................................................................................ 3-20-00
3.2.25 CHECKING THE PISTON ............................................................................................................................. 3-21-00
3.2.26 CHECKING PISTON RINGS ......................................................................................................................... 3-22-00
3.2.27 CHECKING PISTON GUDGEON PIN ........................................................................................................... 3-22-00
3.2.28 REFITTING THE PISTON.............................................................................................................................. 3-23-00
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3.3 ALTERNATOR ........................................................................................................................ 3-24-00
3.3.1 REMOVING THE COOLING FAN ................................................................................................................. 3-24-00
3.3.2 REMOVING THE ALTERNATOR.................................................................................................................. 3-24-00
3.3.3 CHECKING THE FLYWHEEL ....................................................................................................................... 3-24-00
3.3.4 REMOVING THE FREEWHEELING CLUTCH.............................................................................................. 3-25-00
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3.3.5 CHECKING THE STARTER CLUTCH .......................................................................................................... 3-26-00
3.3.6 REFITTING THE FREEWHEELING CLUTCH .............................................................................................. 3-26-00
3.4 OIL PUMP .............................................................................................................................. 3-27-00
3.4.1 REMOVING THE OIL PUMP ......................................................................................................................... 3-27-00
3.4.2 CHECKING THE OIL PUMP ......................................................................................................................... 3-28-00
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3.4.3 REFITTING THE OIL PUMP.......................................................................................................................... 3-28-00
3.5 STARTER MOTOR.................................................................................................................. 3-29-00
3.5.1 REMOVING THE STARTER MOTOR ........................................................................................................... 3-29-00
3.5.2 REFITTING THE STARTER MOTOR............................................................................................................ 3-29-00
3.6 STARTING SYSTEM............................................................................................................... 3-30-00
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3.6.1 REMOVING THE STARTING SYSTEM ........................................................................................................ 3-30-00
3.6.2 REFITTING THE STARTING SYSTEM......................................................................................................... 3-31-00
3.6.3 REMOVING THE PRIMARY BELT ROLLER................................................................................................ 3-32-00
3.6.4 CHECKING THE PRIMARY BELT ROLLER ................................................................................................ 3-33-00
3.6.5 REMOVING THE CLUTCH AND THE SECONDARY BELT ROLLER ........................................................ 3-34-00
3.6.6 CHANGING THE CLUTCH BLOCKS ........................................................................................................... 3-35-00
3.6.7 CHECKING THE CLUTCH ............................................................................................................................ 3-36-00
3.6.8 CHECKING THE SECONDARY BELT ROLLER.......................................................................................... 3-36-00
3.6.9 CHECKING THE BELT ................................................................................................................................. 3-36-00
3.6.10 REFITTING THE SECONDARY BELT ROLLER.......................................................................................... 3-37-00
3.6.11 REMOVING THE FINAL DRIVE GEARS ...................................................................................................... 3-38-00
3.6.12 REMOVING THE SELECTOR SHAFT.......................................................................................................... 3-39-00
3.6.13 REMOVING THE GEAR SELECTOR SPINDLE........................................................................................... 3-40-00
3.6.14 REMOVING THE GEAR LEVER MOUNT..................................................................................................... 3-40-00
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ENGINE
CONTENTS
QUASAR 125-180
Release 00/2003 - 09