Yamaha 2004 WR250FS Owner's Service Manual page 86

VALVE CLEARANCE INSPECTION AND ADJUSTMENT
• Measure the valve clearance e using a
feeler gauge 1.
NOTE:
Record the measured reading if the clear-
ance is incorrect.
6. Adjust:
• Valve clearance
Adjustment steps:
• Remove the camshaft (intake and exhaust).
Refer to "CAMSHAFTS" section in the
CHAPTER 4.
• Remove the valve lifters 1 and the pads
2.
NOTE:
• Place a rag in the timing chain space to
prevent pads from falling into the crank-
case.
• Identity each valve lifter and pad position
very carefully so that they can be rein-
stalled in their original place.
• Select the proper pad using the pad select-
ing table.
Pad range
No. 120 1.20 mm
~ ~
No. 240 2.40 mm
3 - 21
INSP
ADJ
Pad Availability:
25 increments
Pads are available in
0.05 mm increments