Checking The Valve Clearance - SELVA MARINE Grey Whale 200 EFI Service Manual

POWR

Checking the valve clearance

CAUTION:
Do not turn the flywheel magnet counter-
clockwise, otherwise the water pump
impeller may be damaged.
NOTE:
Measure the valve clearances when the
engine is cold.
1. Reduce the fuel pressure.
NOTE:
When measuring or adjusting the valve clear-
ances, the fuel line must be disconnected, so
be sure to reduce the fuel pressure before
performing the disassembly procedure. To
reduce the fuel pressure, see Chapter 4,
"Reducing the fuel pressure."
2. Remove the flywheel magnet cover and
ECM cover.
3. Remove the blowby hose 1.
4. Disconnect the ignition coil couplers 2,
cam position sensor couplers 3, knock
sensor coupler 4, and cooling water
pressure sensor adapter hose 5.
5. Remove the speed sensor coupler 6
from the bracket.
6. Remove all ignition coils and spark plugs.
7. Remove the ECM bracket bolts 7, then
the ECM bracket.
5-9
Power unit
3
2
4
6
8. Remove the cylinder head covers (port
and starboard).
NOTE:
See the exploded diagram (5-7).
9. Turn the flywheel magnet clockwise and
align the "1TDC" mark a on the flywheel
magnet with the pointer b.
10. Check that the "II" marks c on the port
driven sprockets are aligned, and check
that the "I" marks d on the starboard
driven sprockets are aligned.
1
7
7
2
3
5
S6P25090C
6AL3J11