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Mercury 40 4-Stroke - Filling Fuel Tank; Engine Oil Recommendations

Mercury 40 4-Stroke
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FUEL & OIL
22
Filling Fuel Tank
!
WARNING
Avoid serious injury or death from a gasoline fire or explosion. Use caution when filling fuel tanks.
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.
PORTABLE FUEL TANK PLACEMENT IN THE BOAT
Place the fuel tank in the boat so the vent is higher than the fuel level under normal boat operating
conditions.
Engine Oil Recommendations
We recommend the use of Mercury or Quicksilver NMMA FC-W certified synthetic blend 25W-40 4-
Stroke Outboard Oil for general, all-temperature use. If SAE 10W-30 oil is preferred, use Mercury or
Quicksilver NMMA FC-W certified 10W-30 4-Stroke Outboard Oil. If the recommended Mercury or
Quicksilver NMMA FC-W certified outboard oils are not available, a major brand of NMMA FC-W certified
4-stroke outboard oil of similar viscosity may be used.
When operating in temperatures above 4 °C (40° F), we encourage the use of NMMA FC-W certified
synthetic blend 25W-40 4-Stroke Outboard Oil.

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