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4
Owner’s Manual
TOB-120,TOB-300
Lubrication and Maintenance
Maintenance, replacement, or repair of the emission control devices and systems may be performed by any
non-road engine repair establishment or individual.
Your Tanaka Dealer will be happy to provide any service required to keep your Outboard Motor operating at
peak efficiency.
CAUTION
: Stop motor, wait for moving parts to stop and disconnect spark plug wire before attempting any
lubrication or maintenance procedures.
CAUTION
: DO NOT touch motor or drive parts which might be hot
from operation. Allow such parts to cool before servicing unit.
Shear Pin Replacement
Insure that motor has stopped, wire from spark plug is removed, and
unit has cooled down.
A shear pin through the propeller shaft is designed to prevent damage
to the drive train if the propeller strikes an underwater object. The
shear pin will not prevent damage to the propeller which may also
require replacement after striking an object.
When the pin is sheared, motor will continue to run but the boat will
stop movement. Shut off motor immediately to prevent damage to unit.
To replace shear pin, remove cotter pin which holds propeller against
shear pin. Remove propeller and inspect for damage. Replace if
necessary. Lubricate shaft with lithium grease. Shaft should be lubricated
every 30 to 60 days. Inspect gear case for damage and have serviced if
necessary. Replace broken shear pin and reassemble propeller and cotter
pin.
Fuel Filter
Model 120
Fuel filter is located just above fuel shut off valve knob. To remove
filter, turn valve OFF. Remove fuel inlet bolt just above knob. Rinse
inlet screen and bolt assembly in warm water with detergent. Rinse
thoroughly several times until all traces of detergent are eliminated.
Allow assembly to air dry before re-installing.
Model 300
Turn fuel shut off valve to OFF position. Unscrew sediment bowl, then
remove 0-ring and screen from valve and clean as described above for
model 120.
