Yamaha Raptor 90 YFM90RA 2011 Service Manual page 103

CYLINDER HEAD
EBS00220
REMOVING THE CYLINDER HEAD
1. Align:
• "T" mark on the rotor
(with the stationary pointer on the crank-
case)
a. Turn the crankshaft clockwise with a wrench.
b. Align the "T" mark
stationary pointer
When the "T" mark is aligned with the sta-
tionary pointer, the piston is at Top Dead
Center (TDC).
TIP
TDC on compression stroke check:
• Both rocker arms must have a valve clear-
ance when the camshaft sprocket alignment
mark is aligned with the cylinder head
alignment mark
camshaft sprocket away from the cylinder he-
ad.
• If not, give the crankshaft one counterclock-
wise turn to meet the above condition.
2.Remove:
bolt, flg. (small head)
•
• cyl. head cover assy.
• nut
• carb. joint assy.
• nut
• washer
• cap, camshaft
TIP
Working in a crisscross pattern, loosen e-
•
ach nut 1/4 of a turn.
• bolt, flg. (small head)
• tensioner assy.
4 - 6
ENG
on the rotor with the
on the crankcase.
, and the round hole in