Yamaha 5KR2, Service Manual

Page: 190 / 332

5-9
CYLINDER HEADS
ENG
NOTE:
NOTE:
NOTE:
4. Remove:
D
timing chain tensioner 1
D
gasket 2
5. Remove:
D
bolt (camshaft sprocket) 1
D
camshaft sprocket 2
To prevent the timing chain from falling into the
crankcase fasten a wire to it.
6. Remove:
D
cylinder head
D
Loosen the bolts in the proper sequence.
D
Follow the numerical order shown in the il-
lustration. Loosen each bolt 1 / 4 of a turn at a
time until all of the bolts are loose.
Rear cylinder head
When removing the rear cylinder head, repeat
the front cylinder head removal procedures.
However, note the following points.
1. Align:
D
“I” mark
(with the stationary pointer)
Removal steps:
D
Turn the crankshaft counterclockwise 300
_
.
D
Align the “I” mark
a
with the stationary pointer
b on the crankcase cover (left) when the rear
piston is at TDC on the compression stroke.
D
When the “I” mark is aligned with the stationary
pointer the alignment mark
c
on the camshaft
sprocket should be aligned with the stationary
pointer
d on the cylinder head.
D
The rear piston is at TDC on the compression
stroke when there is clearance at both of the
rocker arms.