Checking The Timing Belt And Sprocket; Checking The Valve Lifter; Checking The Camshaft - SELVA MARINE Blue Whale 250 EFI Service Manual

POWR
14. Remove the camshaft caps in the
sequence shown.
15. Remove the camshafts 8 and oil seals
9.
PORT
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# #
±
±
$ $
CAUTION:
Do not reuse the gaskets 0, always
replace them with new ones.
NOTE:
See the exploded diagram (5-8).
16. Remove the valve lifters from the cylinder
heads.
NOTE:
Do not mix the valve train parts. Keep them
organized in their proper groups.
5-27
Power unit
UP STBD
!
# $
± #
$ %
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S6P25530
9
8
0
S6P25540E
Checking the timing belt and
sprocket
1. Check the interior and exterior of the tim-
ing belt. Replace if cracked, damaged, or
worn.
2. Check the drive sprocket. Replace the
crankshaft assembly if cracked, dam-
aged, or worn.
3. Check the driven sprockets. Replace the
variable camshaft timing assembly or
driven sprocket if cracked, damaged, or
worn.

Checking the valve lifter

1. Check the valve lifters. Replace if dam-
aged, scratched, or worn.

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.
0
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.
S6P25550C
6P23H11