Yamaha XP500 Service Manual page 345

1
2
CAMSHAFTS
M MMM M MMM M M MMM
a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the "I" mark a on the A.C.
magneto rotor with the stationary pointer b
on the A.C. magneto cover.
c. Install the timing chain onto both camshaft
sprockets, and then install the camshafts
onto the cylinder head.
NOTE:
The camshafts should be installed onto the
cylinder head so that the alignment mark c on
the intake camshaft sprocket and the align-
ment mark d on the exhaust camshaft
sprocket align with the cylinder head mating
surface, as shown in the illustration.
CAUTION:
_
Do not turn the crankshaft when installing
the camshafts to avoid damage or improper
valve timing.
L LLL L LLL L L LLL
2. Install:
• dowel pins
• intake camshaft cap 1
• exhaust camshaft cap 2
• camshaft cap bolts
CAUTION:
The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft cap, and camshafts will result.
NOTE:
Lubricate the camshaft cap bolt threads with
engine oil.
5 - 14
ENG
M M MMM M M MMM M
L L LLL L L LLL L
10 Nm (1.0 m · kg, 7.2 ft · lb)
M MMM M MMM
L LLL L LLL