Yamaha FZS600'98, Service Manual

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4-12
4
6
5
3
2
1
“E”
“I”
C
C
CAMSHAFT
ENG
CAUTION:
NOTE:
CAUTION:
The camshaft cap bolts must be tight-
ened evenly or damage to the cylinder
head, camshaft caps, and camshafts will
result.
Camshaft cap bolt
10 Nm (1.0 m kg)
4. Install:
intake camshaft sprocket
exhaust camshaft sprocket
a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the com-
pression stroke, align the “T” mark
a
on
the magneto rotor with the stationary
pointer
b on the crankcase.
c. Install the timing chain onto both cam-
shaft sprockets and then install the cam-
shaft sprockets onto the camshafts.
When installing the camshaft sprockets,
start with the exhaust camshaft and be
sure to keep the timing chain as tight as
possible on the exhaust side.
Make sure that the match marks c are
parallel with the edge of the cylinder head.
“I”: Intake side
“E”: Exhaust side
Do not turn the crankshaft when instal-
ling the camshaft to avoid damage or im-
proper valve timing.
d. After the crankshaft is turned several full
turns and piston #1 is at TDC, make sure
that marks
a
and b are aligned.
5. Install:
timing chain guide (exhaust side)
6. Install:
timing chain tensioner
a. Remove the cap bolt 1 , washer 2 , and
springs 3
b. Release the timing chain tensioner one-
way cam 4 and push the timing chain
tensioner rod 5 all the way into the timing
chain tensioner housing.
c. Install the timing chain tensioner and gas-
ket 6 onto the cylinder block.