Yamaha VMAX 2009 Service Manual page 132

b. Turn the crankshaft almost 1/2 of a turn (167
degrees) counterclockwise until the "R" mark
"a" on the generator rotor is aligned with the
stationary pointer "b" on the generator cover.
b a
R
c. Measure the valve clearance with a thickness
gauge.
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
L LLL L LLL L L LLL L
M MMM M MMM M M MMM M
Piston #2 TDC
a. Position piston #2 at TDC by turning the
crankshaft counterclockwise until the "T2"
mark "a" on the generator rotor is aligned with
the stationary pointer "b" on the generator
cover.
b a
b. Check that the punch mark "c", punch mark
"d", and "I" mark "e" are aligned as shown.
c
d
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
e
c. Measure the valve clearance with a thickness
gauge.
L LLL L LLL L
M MMM M MMM M
Piston #4 TDC
a. Position piston #2 at TDC.
b. Turn the crankshaft almost 2/3 of a turn (223
degrees) counterclockwise until the "F" mark
"a" on the generator rotor is aligned with the
stationary pointer "b" on the generator cover.
b a
LLL
F
MMM
c. Measure the valve clearance with a thickness
gauge.
L LLL L LLL L
4. Remove:
• Camshafts
TIP
• Refer to "CAMSHAFTS" on page 5-9.
• When removing the timing chain and cam-
shafts, fasten the timing chain with a wire to re-
trieve it if it falls into the crankcase.
5. Adjust:
• Valve clearance
M MMM M MMM M
a. Remove the valve lifter "1" and the valve pad
"2" with a valve lapper "3".
3-5
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
Valve lapper
90890-04101
Valve lapping tool
YM-A8998
ENGINE
L LLL L LLL
M MMM M MMM
L LLL L LLL
M MMM M MMM