Checking The Timing Chain Tensioner; Installing The Camshafts - Yamaha 2009 XP500Y TMAX Service Manual

EAS23960

CHECKING THE TIMING CHAIN TENSIONER

1. Check:
• Timing chain tensioner
Cracks/damage → Replace.
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a. Push the timing chain tensioner rod "1" into
the timing chain tensioner housing by hand.
TIP
While pushing the timing chain tensioner rod "a",
turn it clockwise "b" with the timing chain ten-
sioner body "2" until if stops.
b
b. Lock the timing chain tensioner rod "1" by set-
ting the circlip "3" to groove "4" while pushing
the timing chain tensioner rod.
3
4
c. Push the timing chain tensioner rod "c".
d. Make sure that the timing chain tensioner rod
comes out "d" of the timing chain tensioner
housing smoothly. If there is rough move-
ment, replace the timing chain tensioner.
c
d
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2
a
1
L LLL L L LLL L LLL
5-12
EAS24000

INSTALLING THE CAMSHAFTS

1. Install:
• Exhaust camshaft "1"
• Intake camshaft "2"
2
1
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a. Turn the crankshaft clockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the "I" mark "a" on the gen-
erator rotor with the stationary pointer "b" on
the generator cover.
c. Install the timing chain onto both camshaft
sprockets, and then install the camshafts
onto the cylinder head.
TIP
• When installing the timing chain, start with the
exhaust camshaft and be sure to keep the tim-
ing chain as tight as possible on the exhaust
side.
• The camshafts should be installed onto the cyl-
inder head so that the alignment hole "c" on the
intake camshaft sprocket and the alignment
CAMSHAFTS
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