Yamaha XV1600A1999 Service Manual page 74

ADJUSTING THE VALVE CLEARANCE
9. Measure:
S valve clearance
Out of specification ! Adjust.
Valve clearance (cold)
Intake valve
0
Exhaust valve
0
CAUTION:
Be sure to check the intake and exhaust
valves.
piston #1 TDC (rear cylinder)
a. Turn the crankshaft counter clockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the TDC mark a on the
pickup coil rotor with the pointer b on the
clutch/pickup coil rotor cover.
c. Check the camshaft drive gear mark c posi-
tion and camshaft driven gear mark d posi-
tion as shown.
If the marks are not aligned, turn the crank-
shaft counter clockwise 360 degrees and re-
check step b.
d. Measure the valve clearance with a thick-
ness gauge.
Piston #2 TDC (front cylinder)
a. Turn the crankshaft counterclockwise from
the piston #1 TDC by 405 degrees.
b. When piston #2 is at TDC on the compres-
sion stoke, align the TDC mark e on the
pickup coil rotor with the pointer b on the
clutch/pickup coil rotor cover.
c. Check the camshaft drive gear mark c posi-
tion and camshaft driven gear mark d posi-
tion as illustration.
d. Measure the valve clearance with a thick-
ness gauge.
3-8
CHK
ADJ
0.04 mm
0.04 mm