Yamaha MT-03 Service Manual page 208

c. Install the timing chain "1" onto the camshaft
sprocket "2", then the camshaft sprocket on-
to the camshaft, and then finger tighten the
camshaft sprocket bolts.
NOTE:
To install the camshaft sprocket, install the pro-
jection "3" on the camshaft sprocket into the
slot "a" in the decompression lever.
d. Make sure the "I" mark "d" on the camshaft
sprocket with the stationary pointer "e" on
the cylinder head.
e
d
1
NOTE:
• When installing the camshaft sprocket, be
sure to keep the timing chain as tight as pos-
sible at the exhaust end of the chain.
• Align the projection on the camshaft with the
slot in the camshaft sprocket.
CAUTION:
Do not turn the crankshaft when installing
the camshaft to avoid damage or improper
valve timing.
e. Remove the wire from the timing chain.
5. Install:
• Timing chain tensioner
a. Remove the timing chain tensioner cap bolt

c
"1", copper washer "2" and spring "3".
b. Release the timing chain tensioner one-way

b
cam "4" and push the timing chain tension-
er rod "5" all the way into the timing chain
ten-sioner housing.
c. Install the timing chain tensioner and gasket
"6" onto the cylinder.
NOTE:
Install the gasket with its beaded side facing
the timing chain tensioner end.
3
2
d. Install the spring and timing chain tensioner
cap bolt.
6. Turn:
• Crankshaft
(several turns counterclockwise)
7. Check:
• "I" mark "a"
5-13
CYLINDER HEAD
Timing chain tensioner bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
6 New
3
4
5
Timing chain tensioner cap bolt
20 Nm (2.0 m·kg, 14 ft·lb)
2
New
1