TOHATSU MFS 25B Owner's Manual page 61

3. Propeller
4. Washer
5. Nut
6. Split pin
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WARNING
Do not hold propeller with hand(s) when
loosening or tightening propeller nut. Put a
piece of wood block between propeller
blade and anti-ventilation plate to hold pro-
peller.
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CAUTION
 Do not install propeller without thrust
holder, or propeller boss could be dam-
aged.
 Do not reuse split pin.
 After installing split pin, spread the pin
apart to prevent it from falling out which
could lead to the propeller coming off
during operation.
INSPECTION AND MAINTENANCE
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Replacing the spark plugs
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WARNING
 Do not reuse spark plug with damaged
insulation, or sparks can leak through
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.
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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
61
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