Yamaha MBK X-MAX 300 2017, Service Manual

Page: 215 / 462

CYLINDER HEAD
5-20
TIP
• Install the timing chain tensioner gasket so that
the tab “a” on the gasket is protruding in the di-
rection shown in the illustration.
• The mark “b” on the timing chain tensioner
should face in the direction shown in the illus-
tration.
• Apply Yamaha bond No. 1215 to the threads of
the timing chain tensioner bolts.
d. Install the spring, washer, and timing chain
tensioner cap bolt.
5. Turn:
• Crankshaft
(several turns clockwise)
6. Check:
• Mark “a”
Make sure that the mark “a” on the generator
rotor is positioned between the slots “b” in the
generator rotor cover.
• “I” mark “c”
Make sure the “I” mark “c” on the camshaft
sprocket is aligned with the match mark “d”
on the cylinder head.
Out of alignment
→
Correct.
Refer to the installation steps above.
7. Tighten:
• Camshaft sprocket bolts “1”
TIP
Tighten the camshaft sprocket bolts with the
camshaft sprocket stopper “2”.
8. Measure:
• Valve clearance
Out of specification
→
Adjust.
Refer to “ADJUSTING THE VALVE CLEAR-
ANCE” on page 3-5.
9. Install:
• Bracket 1 “1”
Yamaha bond No. 1215
90890-85505
(Three bond No.1215®)
T
R
.
.
Timing chain tensioner bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
T
R
.
.
Timing chain tensioner cap bolt
24 N·m (2.4 kgf·m, 18 lb·ft)
a
6
b
T
R
.
.
Camshaft sprocket bolt
12 N·m (1.2 kgf·m, 8.9 lb·ft)
Camshaft sprocket stopper
90890-04182
Camshaft sprocket stopper
YM-04182
b
a
d
c
1
2