Yamaha YP125R Service Manual

STEERING HEAD
4-59
EAS23110
REMOVING THE LOWER BRACKET
1. Stand the vehicle on a level surface.
WARNING
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
2. Remove:
• Upper ring nut “1”
• Lock washer
• Center ring nut
• Rubber washer
• Lower ring nut “2”
• Lower bracket
WARNING
EWA13730
Securely support the lower bracket so that
there is no danger of it falling.
T
IP
Remove the upper ring nut and lower ring nut
with the steering nut wrench “3”.
EAS23120
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 “1” with a long rod “2” and hammer.
b. Remove the bearing race from the lower
bracket “3” with a floor chisel “4” and ham-
mer.
c. Install new bearing races.
NOTICE
ECA14270
If the bearing race is not installed properly,
the steering head pipe could be damaged.
T
IP
Always replace the bearings and bearing races
as a set.
▲▲▲▲▲▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
4. Check:
• Lower handlebar holder
• Lower bracket
(along with the steering stem)
Bends/cracks/damage → Replace.
EAS23150
INSTALLING THE STEERING HEAD
1. Lubricate:
• Upper bearing
• Lower bearing
• Bearing races
2. Install:
• Lower ring nut “1”
Steering nut wrench
90890-01403
Exhaust flange nut wrench
YU-A9472
Recommended cleaning solvent
Kerosene
3
1
2
Recommended lubricant
Lithium-soap-based grease

Yamaha YP125R Specifications

General

Engine Type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke	52.4 mm x 57.9 mm
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	V-Belt Automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Brake	Hydraulic single disc, Ø267 mm
Starter System	Electric
Rear Tyre	140/70-14M/C 62P (Tubeless)