SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 72 / 377

CHK
ADJ
Periodic check and adjustment
3-7
6P23H11
2. While turning the flywheel magnet clock-
wise, check the interior
a
and the exte-
rior
b
of the timing belt. Replace if
cracked, damaged, or worn.
NOTE:
To replace the timing belt, see Chapter 5,
“ Replacing the timing belt. ”
Checking the spark plug
1. Remove the ECM cover.
2. Remove the ignition coils, and then
remove the spark plugs.
3. Clean the electrodes
1
with a spark plug
cleaner or wire brush. Replace the spark
plug if necessary.
4. Check the electrodes for erosion and
excessive carbon or other deposits, and
the gasket for damage. Replace the
spark plug if necessary.
5. Check the spark plug gap
a
. Adjust if out
of specification.
6. Install the spark plugs, tighten them tem-
porary, then to the specified torque using
a spark plug wrench.
7. Install the ignition coils.
8. Install the ECM cover.
Checking the thermostat
1. Reduce the fuel pressure.
S6P23100
a
b
Specified spark plug:
LFR6A-11 (NGK)
Spark plug gap
a
:
1.0 – 1.1 mm (0.039 – 0.043 in)
T
R
.
.
Spark plug:
25 N · m (2.5 kgf · m, 18.4 ft · lb)
T
R
.
.
Ignition coil bolt:
7 N · m (0.7 kgf · m, 5.2 ft · lb)