Yamaha YZ450F(E) 2014 Owner's Service Manual page 106

TIP
Check that the alignment mark "c" on the cam-
shaft sprocket and the alignment mark "d" on
the intake camshaft sprocket are aligned with
the edge of the cylinder head.
d
c. Measure the valve clearance "e" using a
thickness gauge "1."
TIP
Record the measured reading if the clearance
is incorrect.
e
1
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5. Adjust:
• Valve clearance
b
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Remove the camshaft (intake and exhaust).
a
Refer to "CAMSHAFT" on page 5-11.
b. Remove the valve lifter "2" and the adjusting
pad "3" with a valve lapper "1."
TIP
• Place a cloth in the timing chain space to pre-
vent adjusting pads from falling into the crank-
case.
• Identity each valve lifter and adjusting pad po-
sition very carefully so that they can be rein-
stalled in their original place.
c
e
c. Check the number on the originally installed
adjusting pad.
TIP
• The adjusting pad number "a" is indicated on
the top of the adjusting pad.
• For the number on the originally installed ad-
justing pad, convert the last digit of adjusting
pad number as per the below table.
3-18
Valve lapper
90890-04101
Valve lapping tool
YM-A8998
1
3
ENGINE
2