Wheel Static Balance Adjustment - Yamaha YP250 Service Manual

FRONT WHEEL AND BRAKE DISC
7-6
YP700040

WHEEL STATIC BALANCE ADJUSTMENT

NOTE:
D After replacing the tire and/or rim, the wheel
static balance should be adjusted.
D Adjust the front wheel static balance with the
brake disc installed.
1. Remove:
S Balancing weight
2. Set:
S Wheel
(on a suitable stand)
3. Find:
S Heavy spot
*****************************************************
Procedure:
a. Spin the wheel and wait for it to rest.
b. Put an "X " mark on the wheel's bottom
1
spot.
c. Turn the wheel so that the "X
up.
d. Release the wheel and wait for it to rest.
Put an "X " mark on the wheel's bottom
2
spot.
e. Repeat the above b., c., and d. several
times until all marks come to the same spot.
f. This spot is the wheel's heavy spot "X".
*****************************************************
4. Adjust:
S Wheel static balance
*****************************************************
Adjusting steps:
D Install a balancing weight 1 on the rim exact-
ly opposite to the heavy spot "X".
NOTE:
Start with the smallest weight.
D Turn the wheel so that the heavy spot is 90_
up.
D Check that the heavy spot is at rest there. If
not, try another weight until the wheel is bal-
anced.
*****************************************************
CHAS
" mark is 90_
1