Yamaha TMAX XP500F 2015, Service Manual, Page: 254 / 478

CAMSHAFTS
5-17
• The camshafts should be installed onto the cyl-
inder head so that the alignment marks “c” on
the intake camshaft sprocket and the align-
ment marks “d” on the exhaust camshaft
sprocket align with the cylinder head mating
surface, as shown in the illustration.
NOTICE
ECA13740
Do not turn the crankshaft when installing
the camshaft(s) to avoid damage or improper
valve timing.
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2. Install:
• Dowel pins
• Exhaust camshaft cap “1”
• Intake camshaft cap “2”
TIP
Make sure each camshaft cap is installed in its
original place. Refer to the identification marks
as follows:
“IN”: Intake
“EX”: Exhaust
3. Install:
• Camshaft cap bolts
NOTICE
ECA13730
The camshaft cap bolts must be tightened
evenly or damage to the cylinder head, cam-
shaft caps, and camshafts will result.
TIP
• Lubricate the camshaft cap bolt seats with the
engine oil.
• When tightening the camshaft cap, tighten the
four bolts on the both ends of the cap tempo-
rarily to lower the entire cap, while paying at-
tention not to twist the dowel pins and camshaft
journal. After the camshaft cap touches the cyl-
inder head, tighten the two bolts in the middle
to the specified torque and then the remaining
four bolts to the specified torque.
• To prevent the camshaft cap from cracking,
tighten the camshaft cap carefully by tapping
the camshaft using a soft-face hammer (both
for temporary and final tightening).
4. Install:
• Timing chain tensioner gasket
• Timing chain tensioner
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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. Lock the timing chain tensioner rod by setting
the circlip “3” into groove “4” while pushing
the timing chain tensioner rod.
T
R
.
.
Camshaft cap bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
New
1
2
b
a