Yamaha YZF-R125 Service Manual: Checking the steering head

Yamaha YZF-R125 Service Manual / Chassis / Steering head / 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 steering head pipe with a long rod "1" and hammer.

b. Remove the bearing race from the lower bracket with a floor chisel "2" and hammer.

c. Install a new dust seal and new bearing races.

CAUTION:

If the bearing races are not installed properly, the steering head pipe could be damaged.

NOTE:

Always replace the bearings and bearing races as a set.
Whenever the steering head is disassembled, replace the dust seal.

Checking the steering head

4. Check:

Upper bracket
Lower bracket (along with the steering stem) Bends/cracks/damage →Replace.

Removing the lower bracket

1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. 2. Remove: Upper ring nut Rubber washer Lower r ...

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 ...

Other materials:

Main switch/steering lock
Main switch/steering lock The main switch/steering lock controls the ignition and lighting systems, and is used to lock the steering. The various positions are described below. ON All electrical circuits are supplied with power, the meter lighting, taillight, license plate light and ...

Checking the clutch housing
1. Check: Clutch housing dogs "1" Damage/pitting/wear Deburr the clutch housing dogs or replace the clutch housing. NOTE: Pitting on the clutch housing dogs will cause erratic clutch operation. 2. Check: Bearing Damage/wear Replace the bearing and clutch housin ...

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 to "CHECKING THE TIRES" on page 3-23 and "CHECKING THE WHEELS" on page 3-25. 3. Measure: Radi ...