Camshaft Sprocket Removal; Camshaft Check - Yamaha Waverunner VXS VX1800 Service Manual

2
1
2
5. Remove the timing chain guide (exhaust
side).
6. Remove the intake camshaft caps and ex-
haust camshaft caps.
TIP:
Loosen the camshaft cap bolts in the opposite
order used for tightening.
7. Remove the intake camshaft "1" and ex-
haust camshaft "2".
TIP:
Fasten the timing chain using a wire "3".
1
IN
3

Camshaft sprocket removal

1. Hold the camshaft sprocket using the spe-
cial service tool "1", and then loosen the
camshaft sprocket bolts "2".
2
4
3
2
EX
1
Camshaft wrench "1"
90890-06724
Camshaft wrench "1"
YW-06724
2. Remove the intake camshaft sprocket and
exhaust camshaft sprocket.

Camshaft check

1. Check the camshaft lobes. Replace if pit-
ted or scratched.
2. Measure the cam lobe height "a". Replace
if out of specification.
Cam lobe height-intake
41.330–41.430 mm (1.6272–1.6311 in)
Limit
41.230 mm (1.6232 in)
Cam lobe height-exhaust
41.220–41.320 mm (1.6228–1.6268 in)
Limit
41.120 mm (1.6189 in)
3. Measure the camshaft journal diameter
"a".
a
Journal diameter
24.960–24.980 mm (0.9827–0.9835 in)
4. Measure the camshaft runout. Replace if
out of specification.
5-35
Camshaft
a