Yamaha YZF-R125 Service Manual: Checking and replacing the rear wheel sprocket
1. Check:
- Rear wheel sprocket
More than 1/4 tooth "a" wear
Replace the rear wheel sprocket.Bent teeth
Replace the rear
wheel sprocket.
b. Correct
1. Drive chain roller
2. Rear wheel sprocket
2. Replace:
- Rear wheel sprocket
a. Remove the self-locking nuts and the rear wheel sprocket.
b. Clean the rear wheel drive hub with a clean cloth, especially the surfaces that contact the sprocket.
c. Install the new rear wheel sprocket.
NOTE:
Tighten the self-locking nuts in stages and in a crisscross pattern.
Assembling the rear wheel
1. Install:
- Wheel bearings
- Oil seals
Refer to "ASSEMBLING THE FRONT WHEEL" on page 4-9.
Checking the rear wheel
1. Check:
Rear wheel axle
Rear wheel
Wheel bearings
Oil seals
Refer to "CHECKING THE FRONT WHEEL"
on page 4-8.
2. Check:
Tire
Rear wheel
Damage/wear → Replace.
Refer ...
Adjusting the rear wheel static balance
NOTE:
After replacing the tire, wheel or both, the rear
wheel static balance should be adjusted.
Adjust the rear wheel static balance with the
brake disc and rear wheel drive hub installed.
...
Other materials:
Installing the engine
1. Install:
Engine "1"
Engine mounting bolt (rear lower side) "2"
Engine mounting nut (rear lower side) "3"
Engine mounting bolt (rear upper side) "4"
Engine mounting nut (rear upper side) "5"
Engine mounting bolt (front side) "6"
Engine mounting nut (front side) "7"
NOTE:
Do not ...
Checking the drive sprocket
1. Check:
Drive sprocket
More than 1/4 tooth "a" wear
Replace the
drive chain sprockets as a set.
Bent teeth Replace the drive
chain sprockets
as a set.
b. Correct
1. Drive chain roller
2. Drive chain sprocket
Checking the rear wheel sprocket
Refer to "CHECKING AND R ...
Checking and lubricating the cables
The operation of all control cables and
the condition of the cables should be
checked before each ride, and the cables
and cable ends should be lubricated
if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the out ...