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Yamaha YZ125 2008 User Manual

Yamaha YZ125 2008
160 pages
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4-39
CRANKCASE AND CRANKSHAFT
CRANKCASE AND CRANKSHAFT
REMOVING THE CRANKSHAFT
Order Part name Q'ty Remarks
Engine Refer to "ENGINE REMOVAL" section.
Piston
Refer to "CYLINDER HEAD, CYLINDER
AND PISTON" section.
Primary drive gear
Refer to "KICK SHAFT AND SHIFT SHAFT"
section.
Kick idle gear
Refer to "KICK SHAFT AND SHIFT SHAFT"
section.
Stopper lever
Refer to "KICK SHAFT AND SHIFT SHAFT"
section.
Rotor and stator Refer to "CDI MAGNETO" section.
1 Segment 1 Refer to removal section.
2 Bolt [L=45 mm (1.77 in)] 6
3 Bolt [L=55 mm (2.17 in)] 4
4 Bolt [L=65 mm (2.56 in)] 1
5 Bolt [L=75 mm (2.95 in)] 1
6Holder 1
7 Crankcase (right) 1 Refer to removal section.
8 Crankcase (left) 1 Refer to removal section.
30 Nm (3.0 m kg, 22 ft lb)
10 Nm (1.0 m kg, 7.2 ft lb)
20 Nm (2.0 m kg, 14 ft lb)
14 Nm (1.4 m kg, 10 ft lb)

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Yamaha YZ125 2008 Specifications

General IconGeneral
Bore x Stroke54.0mm x 54.5mm
Compression Ratio8.6~10.7:1
IgnitionCDI
Final DriveChain
Front BrakeHydraulic single disc brake
Rear BrakeHydraulic single disc brake
Front Tire80/100-21
Rear Tire100/90-19
Wheelbase56.8 in
Fuel Capacity2.1 gal
Engine TypeLiquid-cooled, 2-stroke
Fuel DeliveryMikuni TMX38
Front Suspension11.8-in travel
Rear Suspension12.4-in travel
Transmission6-speed, constant mesh

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