TM 3-4230-209-10
I 2-7. FUELING (CONT). I
1
a. Wipe off the dirt around the filler pipe open-
ing and the fuel tank cap. Remove the cap
by turning it counterclockwise until it stops.
Then press down, to allow the projections
on the cap pressure plate to pass under the
projections on the filler pipe neck ramp, and
lift off the cap.
b. Fill the fuel tank until the fuel is approxi-
mately one inch below the filler neck.
OPEN
WARNING
Running the M12A1 with the vent
closed causes a vacuum inside the
fuel tank. That can cause the engine
to stop running. Removing the fuel
tank cap too fast could let in-rush-
ing air force fuel out of the tank. If
the gas spills on the engine, the
M12A1 could catch fire and
explode, causing injury to person-
nel. The fuel tank cap vent stays
open.
2
Make sure that the vent inside the cap is
open and push the filler sleeve down. Place
the cap on the filler neck and turn it clock-
wise until a stop is felt, Press down on the
cap and turn farther to lock it.
2-58
