Yamaha YP125R Service Manual

FRONT WHEEL
4-12
EAS21960
ASSEMBLING THE FRONT WHEEL
1. Install:
• Wheel bearings
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a. Install the new wheel bearing (right side).
NOTICE
ECA37P1029
Do not contact the wheel bearing inner race
“1” or balls “2”. Contact should be made
only with the outer race “3”.
T
IP
Use a socket “4” that matches the diameter of
the wheel bearing outer race.
b. Install the spacer.
c. Install the new wheel bearing (left side).
T
IP
Place a suitable washer “1” between the socket
“2” and the bearing so that both the inner race
“3” and outer race “4” are pressed at the same
time, and then press the bearing until the inner
race makes contact with the spacer “5”.
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EAS21970
ADJUSTING THE FRONT WHEEL STATIC
BALANCE
T
IP
• After replacing the tire, wheel or both, the front
wheel static balance should be adjusted.
• Adjust the front wheel static balance with the
brake disc installed.
1. Remove:
• Balancing weight(s)
2. Find:
• Front wheel’s heavy spot
T
IP
Place the front wheel on a suitable balancing
stand.
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a. Spin the front wheel.
b. When the front wheel stops, put an “X
1
” mark
at the bottom of the wheel.
c. Turn the front wheel 90° so that the “X
1
” mark
is positioned as shown.
d. Release the front wheel.
e. When the wheel stops, put an “X
2
” mark at
the bottom of the wheel.
New

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)