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Mercury 135 Optimax Operation And Maintenance Manual

Mercury 135 Optimax
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FUEL AND OIL
23
Avoiding Fuel Flow Restriction
IMPORTANT: Adding components to the fuel supply system (filters, valves, fittings, etc.) may restrict the fuel flow.
This may cause engine stalling at low speed, and/or a lean fuel condition at high RPM that could cause engine
damage.
Filling Remote Oil Tank
Remove filler cap and fill with the specified oil. Oil tank capacity is 11.5 liters (3 galllons). Replace filler cap and
tighten securely.
IMPORTANT: Always make sure the oil tank caps are threaded on tight. An air leak will prevent oil flow to the
engine.
or27
Filling Engine Mounted Oil Reservoir Tank
NOTE: Filling this tank is only necessary if the oil level should ever drop and the low oil warning system is activated.
1. Remove the top cowl.
2. Loosen the fill cap on the engine oil reservoir tank. Run the engine until all the air has been vented out of the
oil reservoir tank and tank is filled with oil to the point of overflow.
3. Re-tighten the fill cap. Stop the engine and replace the top cowl.
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Filling Fuel Tank
!
WARNING
Avoid serious injury or death from a gasoline fire or explosion. Always stop the engine and do not smoke or
allow open flames or sparks in the area while filling fuel tanks.
Fill fuel tanks outdoors away from heat, sparks, and open flames.
Remove portable fuel tanks from boat to refill them.
Always stop engine before refilling tanks.
Do not completely fill the fuel tanks. Leave approximately 10% of the tank volume unfilled. Fuel will expand in
volume as its temperature rises and can leak under pressure if the tank is completely filled.

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Mercury 135 Optimax Specifications

General IconGeneral
StartingElectric
ExhaustThrough Prop
Horsepower135 HP
Fuel Induction SystemDirect Fuel Injection
Alternator Amp60 Amp
Shaft Length20", 25"
Full Throttle RPM5250-5750
SteeringHydraulic

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