Yamaha WaveRunner - Camshaft Inspection

5-56
E
POWR
CAMSHAFTS
5. Remove:
• Camshaft caps
• Dowel pins
NOTE:
Loosen the intake and exhaust camshaft cap
bolts in the sequence shown.
110763
2
14181511410
75
2
8
9
4
5
112161713
6893
6. Remove:
• Intake camshaft
1
• Exhaust camshaft
2
NOTE:
To prevent the timing chain from falling into the
crankcase, fasten it with a wire
3
.
7. Remove:
• Exhaust camshaft sprocket
1
• Intake camshaft sprocket
2
(with the special tool
3
)
Universal magneto and rotor
holder:
YU-01235
Rotor holder:
90890-01235
Camshaft inspection
1. Check:
• Camshaft lobes
Blue discoloration/pitting/scratches
→
Replace the camshaft.
2. Measure:
• Camshaft lobe dimensions
a
and
b
Out of specification
→
Replace the cam-
shaft.
Cam lobe dimensions:
Intake camshaft:
a
32.55 mm (1.281 in)
b
25.00 mm (0.984 in)
Exhaust camshaft:
a
33.00 mm (1.299 in)
b
25.00 mm (0.984 in)