Checking The Timing Chain Guides; Checking The Timing Chain Tensioner; Installing The Camshafts - Yamaha 2012 TMAX XP500A Service Manual

a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket
EAS23950

CHECKING THE TIMING CHAIN GUIDES

1. Check:
• Timing chain guide (intake side) "1"
• Timing chain guide (exhaust side) "2"
• Timing chain guide (upper side) "3"
Damage/wear → Replace the defective
part(s).
EAS23960
CHECKING THE TIMING CHAIN TEN-
SIONER
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
tensioner body "2" until if stops.
b. Lock the timing chain tensioner rod by set-
ting the circlip "3" to groove "4" while push-
ing the timing chain tensioner rod.
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 movement, replace the timing chain
tensioner.
c
d
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EAS24000

INSTALLING THE CAMSHAFTS

1. Install:
• Exhaust camshaft "1"
• Intake camshaft "2"
5-14
CAMSHAFTS
b
a
1
3
2