Checking The Camshafts - Yamaha XP500 2001 Service Manual

CAMSHAFTS
5. Remove:
S intake camshaft 1
S exhaust camshaft 2
NOTE:
To prevent the timing chain from falling into the
crankcase, faster it with a wire 3 .
6. Remove:
S timing chain guide (exhaust side)
EAS00204

CHECKING THE CAMSHAFTS

1. Check:
S camshaft lobes
Blue discoloration/pitting/scratches ³ Re-
place the camshaft.
2. Measure:
S camshaft lobe dimensions a and b
Out of specification ³ Replace the cam-
shaft.
Camshaft lobe dimension limit
Intake
a 33.252 X 33.352 mm
b 24.956 X 25.056 mm
Exhaust
a 33.252 X 33.352 mm
b 24.956 X 25.056 mm
3. Measure:
S camshaft runout
Out of specification ! Replace.
Max. camshaft runout
0.03 mm
5-9
ENG