Engine; Adjusting The Timing Chain Tensioner - Yamaha 5YF2-AE1 Service Manual

ADJUSTING THE TIMING CHAIN TENSIONER

EBS00046

ENGINE

ADJUSTING THE TIMING CHAIN
TENSIONER
1. Remove:
• C.D.I. magneto cover
• camshaft sprocket cover
Refer to "CYLINDER HEAD" in chapter 4.
2. Remove:
• cap nut 1
3. Loosen:
• locknut 2
• adjuster 3
4. Adjust:
• timing chain tensioner
M MMM M MMM M M MMM
a. Turn the crankshaft counterclockwise with a
wrench.
b. Align the "T" mark 1 on the rotor with the
stationary pointer 2 on the crankcase.
When the "T" mark is aligned with the sta-
tionary pointer, the piston is at the Top Dead
Center (TDC).
NOTE:
Be sure to align the alignment mark 3 on the
camshaft sprocket with the alignment mark 4
on the cylinder head.
c. Turn the crankshaft counterclockwise to
align the camshaft sprocket alignment mark
5 and alignment tab 6 with the adjuster 7
as shown in the illustration.
d. Tighten the adjuster.
e. Install the locknut and cap nut and tighten to
specification.
Locknut
7 Nm (0.7 m · kg, 5.1 ft · lb)
L LLL L LLL L L LLL
3 - 7
CHK
ADJ
M M MMM M M MMM M
L L LLL L L LLL L
M MMM M MMM
L LLL L LLL