Yamaha TRACER MT09TRA Service Manual page 136

b
a
TIP
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
c. Measure the valve clearance with a thickness
gauge "1".
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
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  #3
A. Front
PERIODIC MAINTENANCE
d. To measure the valve clearances of the other
cylinders, starting with cylinder #1 at TDC,
turn the crankshaft counterclockwise as
specified in the following table.
B
C
B. Degrees that the crankshaft is turned coun-
terclockwise
C. Cylinder
D. Combustion cycle
Cylinder #2
Cylinder #3
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
5. Remove:
• Camshaft
TIP
• Refer to "CAMSHAFTS" on page 5-9.
• When removing the timing chain and cam-
1
shafts, fasten the timing chain with a wire to re-
trieve it if it falls into the crankcase.
6. Adjust:
• Valve clearance
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Remove the valve lifter "1" and the valve pad
"2" with a valve lapper "3".
Valve lapper
Valve lapping tool
TIP
• Cover the timing chain opening with a rag to
3-6
D
D
90890-04101
YM-A8998
D
240
480