Yamaha YZF-R125 Service Manual: Installing the steering head
1. Lubricate:
- Upper bearing
- Lower bearing
- Bearing races
2. Install:
- Lower ring nut
- Rubber washer
- Upper ring nut
- Lock washer Refer to "CHECKING AND ADJUSTING THE STEERING HEAD" on page 3-22.
3. Install:
- Upper bracket
- Steering stem nut
NOTE:
Temporarily tighten the steering stem nut.
4. Install:
- Front fork legs Refer to "FRONT FORK" on page 4-44.
NOTE:
Temporarily tighten the upper and lower bracket pinch bolts.
5. Tighten:
- Steering stem nut
Checking the steering head
1. Wash:
Bearings
Bearing races
2. Check:
Bearings
Bearing races
Damage/pitting →Replace.
3. Replace:
Bearings
Bearing races
a. Remove the bearing races from the ste ...
Other materials:
Checking the bulbs and bulb sockets
NOTE:
Do not check any of the lights that use LEDs.
Check each bulb and bulb socket for damage or
wear, proper connections, and also for continuity
between the terminals.
Damage/wear Repair or replace
the bulb,
bulb socket or both.
Improperly connected Properly
connect.
No c ...
Checking the friction plates
The following procedure applies to all of the friction
plates.
1. Check:
Friction plate
Damage/wear Replace the
friction plates
as a set.
2. Measure:
Friction plate thickness
Out of specification Replace
the friction
plates as a set.
NOTE:
Measure the friction plate ...
Checking the rocker arms and rocker arm shafts
The following procedure applies to all of the
rocker arms and rocker arm shafts.
1. Check:
Rocker arm
Damage/wear Replace.
2. Check:
Rocker arm shaft
Blue discoloration/excessive wear/pitting/
scratches Replace or
check the lubrication
system.
3. Measure:
Rocke ...