Yamaha 2004 YXR660 Service Manual page 78

ADJUSTING THE VALVE CLEARANCE
3 - 5
10.Adjust:
• valve clearance
M MMM M MMM M M MMM M M MMM M
a. Loosen the locknut 1.
b. Insert a thickness gauge 2 between the
adjuster end and the valve end.
c. Turn the adjuster 3 clockwise or counter-
clockwise with the tappet adjusting tool 4
until the proper clearance is obtained.
Tappet adjusting tool
P/N. YM-08035-A, 90890-01311
d. Hold the adjuster to prevent it from moving
and then tighten the locknut.
Locknut
14 Nm (1.4 m · kg, 10 ft · lb)
e. Measure the valve clearance.
f. If the clearance is incorrect, repeat the
above steps until the proper clearance is
obtained.
L LLL L LLL L L LLL L L LLL L
11.Install:
• all removed parts
NOTE:
Install all removed parts in the reverse order of
their disassembly. Note the following points.
12.Install:
• engine cooling fan
7 Nm (0.7 m
13.Install:
• air shroud 1
10 Nm (1.0 m · kg, 7.2 ft · lb)
14.Install:
• spark plug
18 Nm (1.8 m
• tappet covers (exhaust)
12 Nm (1.2 m
• tappet cover (intake)
10 Nm (1.0 m
15.Lower the cargo bed.
16.Install:
• console
• passenger seat
• driver seat
Refer to "SEATS, ENCLOSURE, HOOD
AND CARGO BED" in chapter 8.
CHK
ADJ
M MMM M M MMM M MMM
L LLL L L LLL L LLL
· ·
kg, 5.1 ft lb)
· ·
kg, 13 ft lb)
· ·
kg, 8.7 ft lb)
· ·
kg, 7.2 ft lb)