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:
Checking the fuel line
1. Remove:
Left side panel
Refer to "GENERAL CHASSIS" on page 4-1.
2. Lift the fuel tank. (Do not disconnect the fuel
hose, drain hose
3. Check:
Fuel hose "1"
Cracks/damage → Replace.
Loose connection Connect properly.
4. Install:
Fuel tank
Refer to "FUEL TANK" on pa ...
Cable routing
Front brake light switch lead
Right handlebar switch lead
Throttle cable
Main switch
Clutch cable
Clutch switch lead
Left handlebar switch lead
Sub-wire harness
Horn
Speed sensor lead
Front brake hose
Main switch lead
Left headlight assembly lead
Right headlight asse ...
Installing the front fork legs
The following procedure applies to both of the
front fork legs.
1. Install:
Front fork leg
Temporarily tighten the upper and lower
bracket pinch bolts.
NOTE:
Make sure the inner tube end position "a" is 24.5
mm (0.96 in) from the top of the upper bracket.
2. Tighten:
Lower br ...