Checking The Camshaft - SELVA MARINE Grey Whale 200 EFI Service Manual

POWR

Checking the camshaft

1. Check the edge and face of the brim on
the port camshafts and starboard intake
camshaft that is used for the cam posi-
tion sensor. Replace if rough, damaged,
or scratched.
NOTE:
• Do not scratch or damage the face of the
brim.
• If there is a scratch more than 0.2 mm
(0.008 in) deep or more than 0.5 mm (0.020
in) wide on the surface of the brim, a mal-
function may occur in the cam position sen-
sor signal.
2. Measure the cam lobe. Replace if out of
specification.
5-25
Power unit
S6AL5G50
Cam lobe a:
Intake:
46.30–46.40 mm
(1.823–1.827 in)
Exhaust:
45.35–45.45 mm
(1.785–1.789 in)
Cam lobe b:
Intake and exhaust:
35.95–36.05 mm
(1.415–1.419 in)
3. Measure the camshaft runout. Replace if
above specification.
Camshaft runout limit:
0.015 mm (0.0006 in)
4. Measure the camshaft journal diameter
c and cylinder head journal inside diam-
eter d. Replace the camshaft or cylinder
head assembly, or both if out of specifi-
cations.
d
d
S6P25560
c
c
S6AL5240
6AL3J11