Checking The Cylinder Head; Checking The Valve Spring - SELVA MARINE Pike 9,9 Service Manual

POWR
4. Remove the intake and exhaust valves.
NOTE:
Be sure to keep the valves, springs, and
other parts in the order as they were
removed.
Valve spring compressor 9:
90890-04019
Valve spring compressor
attachment 0: 90890-06320

Checking the cylinder head

1. Eliminate carbon deposits from the com-
bustion chambers and check for deterio-
ration.
2. Check the cylinder head warpage using a
straightedge 1 and thickness gauge 2
in the directions shown. Replace the cyl-
inder head assembly if above specifica-
tion.
5-29
Power unit
2
Cylinder head warpage limit:
0.10 mm (0.0039 in)

Checking the valve spring

1. Measure the valve spring free length a.
Replace if below specification.
5
Valve spring free length a:
27.6 mm (1.0866 in)
2. Measure the valve spring tilt b. Replace
if above specification.
1
S6AU5078
S6AU5079
5
a
S68V5775
6AU3K11