Removing The Camshafts - Yamaha YZF-R1S Service Manual

CAMSHAFT
EAS00198

REMOVING THE CAMSHAFTS

1. Remove:
S pickup rotor cover
Refer to "CRANKSHAFT POSITION SEN-
SOR AND PICKUP ROTOR".
2. Align:
S "T" mark a on the pickup rotor
(with the crankcase mating surface b )
a. Turn the crankshaft clockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the "T" mark a on the pick-
up rotor with the crankcase mating surface
b .
NOTE:
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
3. Loosen:
S camshaft sprocket bolts 1
Camshaft wrench
90890-04143
4. Remove:
S timing chain tensioner 1
S O-ring
5. Remove:
S camshaft caps 1
S dowel pins
CAUTION:
To prevent damage to the cylinder head,
camshafts or camshaft caps, loosen the
camshaft cap bolts in stages and in a criss-
cross pattern, working from the outside in.
5-14
ENG