TOHATSU MFS 6B Owner's Manual page 36

36
INSPECTION AND MAINTENANCE
Replacing the spark plugs
!
1
Do not reuse spark plug with
damaged insulation, or sparks
can leak through crack, potentially
2
leading to electric shock, explosion
and/or fire.
Do not touch spark plugs
3
immediately after stopping engine
as they will be hot and could cause
severe burns if touched. Allow
motor to cool down first.
4
If the spark plug(s) is fouled, has
carbon build up, or is worn, it should
5
be replaced.
When reusing spark plugs, remove
dirt from the electrodes and adjust
6
spark gap to specification.
Notes
7
When inspecting the plug, always
clean the gasket surface and use a
8
new gasket. Wipe off any dirt from the
threads and screw in the spark plug
to the correct torque.
9
Stop the engine.
Remove the top cowl.
10
Remove the spark plug caps.
Remove the spark plugs by turning
it counter-clockwise, using a 5/8"
11
socket wrench and handle.
Use spark plug NGK DCPR-6E.
12
13 Electrode
Spark gap
(0.8 to 0.9 mm, 0.031 to 0.035 in)
14
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Attach spark plug and tighten to
specified torque.
Notes
Spark plug torque :
18.0Nm(13.3ft-lb)(1.84kgf-m)
If a torque-wrench is not available
when you are fitting a spark plug, a
good estimate of the correct torque
is 1/4 to 1/2 a turn past finger-tight.
Have the spark plug adjusted to the
correct torque as soon as possible
with a torque-wrench.
Replacing the anode
A sacrificial anode protects the
outboard from galvanic corrosion.
Anode is located on the gear case
and the cylinder. When the anode is
eroded more than 2/3, replace it.
Notes
Never grease or paint the anode.
At each inspection re-tighten the
anode attaching bolt. As it is likely
to be subjected to electrolytic
corrosion.