Yamaha 2009 XP500Y TMAX Service Manual page 86

EX
c. Measure the valve clearance with a thickness
gauge "1".
1
TIP
• If the valve clearance is incorrect, record the
measured reading.
• Measure the valve clearance in the following
sequence.
Valve clearance measuring sequence
Cylinder #1 → #2
#2
A
A. Front
d. To measure the valve clearances of the other
cylinders, starting with cylinder #1 at TDC,
turn the crankshaft clockwise as specified in
the following table.
d c
IN
#1
A
#1
B
#2
A. Degrees that the crankshaft is turned
clockwise
B. Cylinder
C. Combustion cycle
Cylinder #2
L LLL L LLL L L LLL L
7. Remove:
• Camshafts
TIP
• Refer to "CAMSHAFTS" on page 5-6.
• 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.
8. Adjust:
• Valve clearance
M MMM M MMM M M MMM M
a. Remove the valve lifter "1" and the valve pad
"2" with a valve lapper "3".
Valve lapper
90890-04101
Valve lapping tool
YM-A8998
TIP
• Cover the timing chain opening with a rag to
prevent the valve pad from falling into the
crankcase.
• Make a note of the position of each valve lifter
"1" and valve pad "2" so that they can be in-
stalled in the correct place.
3-5
ENGINE
0˚ 360˚ 720˚
C
C
360°
L LLL L L LLL L L LLL L LLL
M MMM M M MMM M M MMM M MMM