TOHATSU MFS 4C Owner's Manual page 46

46
INSPECTION AND MAINTENANCE
crack, potentially leading to electric
shock, explosion and/or fire.
 Do not touch spark plugs immediately
after stopping engine as they will be hot
a n d c o u l d c a u s e s e v e r e b u r n s i f
touched. Allow motor to cool down first.
If the spark plug(s) is fouled, has carbon
build up, or is worn, it should be replaced.
When reusing spark plugs, remove dirt
from the electrodes and adjust spark gap
to specification.
ENON00027-0
Note
When inspecting the plug, always clean the
gasket surface and use a new gasket. Wipe
off any dirt from the threads and screw in
the spark plug to the correct torque.
1. Stop the engine.
2. Remove the top cowl.
3. Remove the spark plug caps.
4. Remove the spark plugs by turning it
counter-clockwise, using a 5/8" socket
wrench and handle.
5. Attach spark plug and tighten to speci-
fied torque.
Use spark plug NGK DCPR-6E.
1
2
1. Electrode
2. Spark gap (0.8–0.9 mm, 0.031–0.035 in)
ENON00028-0
Note
 Spark plug torque:
18.0 Nm (13.3 ft-lb) [1.84 kgf-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.
ENOM00088-0
Replacing the anode
A sacrificial anode protects the outboard
motor from galvanic corrosion. Anode is
located on the gear case and the cylinder.
When the anode is eroded more than 2/3,
replace it.
ENON00029-0
Notes
 Never grease or paint the anode.
 At each inspection re-tighten the anode
ENOF00451-0
attaching bolt. As it is likely to be sub-
jected to electrolytic corrosion.