RIEJU marathon 125 Owner's Manual page 92

PETROL TAP
The petrol tap is situated on the left-hand side of the Petrol tap
vehicle, under the fuel tank.
It has three positions:
OFF: with the lever in this position, the fuel will not
go through. Put the lever in this position when the
motor is not running when parked and garaged.
ON: with the lever in this position, the fuel goes to
the carburettor. Normal driving is done with the
lever in this position.
RES: this position is RESERVE. If you run out of fuel
while you are driving with the lever in the "ON"
position, turn the lever to this position. Fill the tank
as soon as possible, then it is important to remem-
ber to turn the lever back to "ON".
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