Yamaha YZF-R1 98 Service Manual page 275

FRONT WHEEL AND BRAKE DISCS
7 - 8
1. Rem ove:
• balancing w eight(-s)
2. Find:
• front w heel's heavy spot
a. Place the front w heel on a suitable
balancing stand.
b. Spin the front w heel.
c. When the front w heel stops, put an
" X " m ark at the bottom of the w heel.
1
d. Turn the front w heel 90˚ so that the
" X " m ark is positioned as show n.
1
e. Release the front w heel.
f. When the front w heel stops, put an
" X " m ark at the bottom of the w heel.
2
g. Repeat steps (a) through (d) several
tim es until all the m arks com e to rest
at the sam e spot.
h. The spot w here all the m arks com e to
rest is the front w heel's heavy spot
" X" .
3. Adjust:
• front w heel static balance
a. Install a balancing w eight 1 onto the
rim exactly opposite the heavy spot
" X" .
NOTE:
Start w ith the lightest w eight.
b. Turn the front w heel 90˚ so that the
heavy spot is positioned as show n.
c. If the heavy spot does not stay in that
position, install a heavier w eight.
d. Repeat steps (b) and (c) until the front
w heel is balanced.
CHAS