TOHATSU MFS 4C Owner's Manual page 49

20W−40, 20W−50
15W−40, 15W−50
10W−40, 10W−50
10W−30
-30 -20 -10 0 10
-22 -4 14 32 50
You can also use NMMA FC-W certified 4-
stroke outboard oil below.
10W-30: is recommended for use in all
temperature.
25W-40: may be used at temperatures
above 4°C (40°F).
ENOW00090-0
CAUTION
Use of engine oils that do not meet these
requirements will result in reduced engine
life, and other engine problems.
ENOW00091-0
CAUTION
You may be injured due to high engine tem-
peratures if you fill engine oil just after
stopping. Changing engine oil should be
done after the engine has been cooled.
ENOW00092-0
CAUTION
 Do not overfill engine oil, or engine oil
could leak and/or engine could be dam-
aged. If engine oil level is over upper
limit marks of oil gauge, drain oil to level
lower than upper limit.
 Be sure that outboard motor is in upright
and level position when checking or
changing oil.
20 30 40 ˚C
68 86 96 ˚F
ENOF00025-0
INSPECTION AND MAINTENANCE
 Stop engine immediately if low oil pres-
sure warning lamp is lit or oil leak is
found, or engine could be severely dam-
aged. Consult dealer.
ENON00031-0
Notes
 If any amount of water is found in engine
oil, making it milky white, consult dealer.
 If engine oil is contaminated with fuel,
emitting strong fuel smell, consult dealer.
 Some oil dilution is normal if engine is
idled or trolled for long periods, espe-
cially in cooler water temperatures.
ENOM00093-0
Cleaning the fuel filters and the
fuel tank
Fuel filters are provided inside the fuel tank
and engine.
ENOW00093-0
WARNING
Gasoline and its vapors are very flammable
and can be explosive.
 Do not start this procedure while engine
is operating or hot even after stopping it.
 Place fuel filter away from every source
of ignition such as sparks or open
flames.
 Wipe off gasoline well immediately if
spilled.
 Install fuel filter with all related parts in
place, or fuel leak could occur, leading
to catching fire or explosion.
 Check fuel system regularly for leakage.
 Contact authorized dealer for fuel sys-
tem services. Services by unqualified
person could lead to engine damage.
ENOM00433-0
Fuel filter (for engine)
Replace the filter provided inside of engine
cover if there is water or dirt inside.
49