Yamaha MBK MW125 2014 Service Manual page 218

d. While holding the camshaft, temporarily tight-
en the camshaft sprocket bolt.
e. Remove the wire from the timing chain.
▲ ▲▲▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
3. Install:
• Timing chain tensioner gasket
• Timing chain tensioner
▼ ▼▼▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
a. Remove the timing chain tensioner plug.
b. While lightly pressing the timing chain ten-
sioner rod by hand, turn the tensioner rod ful-
ly clockwise with a thin screwdriver "1".
TIP
Make sure that the tensioner rod has been fully
turned clockwise.
c. Install the gasket and the timing chain ten-
sioner "2" onto the cylinder.
EWA17620
WARNING
Always use a new gasket.
TIP
• Be sure to install the timing chain tensioner
gasket so that its projection "a" is protruding
from the rear left side of the timing chain ten-
sioner.
• Apply sealant to the threads of the timing chain
tensioner bolts.
Yamaha bond No. 1215
90890-85505
(Three bond No.1215®)
Timing chain tensioner bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
d. Turn the timing chain tensioner rod counter-
clockwise with a thin screwdriver "1", make
sure it releases, and then install the timing
chain tensioner plug.
▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
New
▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
1
1
▲▲▲
▼▼▼
▲ ▲▲▲ ▲ ▲▲▲ ▲
4. Turn:
• Crankshaft
(several turns clockwise)
5. Check:
• "I" mark "a"
Make sure the "I" mark "a" on the AC magne-
to rotor is aligned with the match mark "b" on
the right crankcase.
• "I" mark "c"
Make sure the "I" mark "c" on the camshaft
sprocket is aligned with the match mark "d"
on the camshaft stopper plate.
Out of alignment → Correct.
Refer to the installation steps above.
6. Tighten:
• Camshaft sprocket bolt
5-15
CYLINDER HEAD
2
a
▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
c
d
Camshaft sprocket bolt
30 Nm (3.0 m·kgf, 22 ft·lbf)
▲ ▲▲▲ ▲ ▲▲▲
b
a