Yamaha YXR660FAS Service Manual download pdf (Page 82)

3 - 5

CHK

ADJ

ADJUSTING THE VALVE CLEARANCE

10.Adjust:

• valve clearance

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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.

d. Hold the adjuster to prevent it from moving

and then tighten the locknut.

e. Measure the valve clearance.

f. If the clearance is incorrect, repeat the

above steps until the proper clearance is

obtained.

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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

13.Install:

• air shroud 1

14.Install:

• spark plug

• tappet covers (exhaust)

• tappet cover (intake)

15.Lower the cargo bed.

16.Install:

• console

• passenger seat

• driver seat

Refer to “SEATS, ENCLOSURE, HOOD

AND CARGO BED” in chapter 8.

Tappet adjusting tool

P/N. YM-08035-A, 90890-01311

T

R

.

.

Locknut

14 Nm (1.4 m · kg, 10 ft · lb)

T

R

.

.

7 Nm (0.7 m

·

kg, 5.1 ft

·

lb)

T

R

.

.

10 Nm (1.0 m · kg, 7.2 ft · lb)

T

R

.

.

18 Nm (1.8 m

·

kg, 13 ft

·

lb)

T

R

.

.

12 Nm (1.2 m

·

kg, 8.7 ft

·

lb)

T

R

.

.

10 Nm (1.0 m

·

kg, 7.2 ft

·

lb)

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