Craftsman 127.28875 Operator's Manual page 17

CONTROLS
FUEL SELECTOR VALVE (U)
The fuel tank selector valve is located behind the
seat.
The fuel tank selector valve has three positions:
Off: The tank selector is off when the lever points
down. The selector should be off whenever the
machine is transported or stands unused for any
length of time. Shutting off the fuel supply avoids the
possibility of flooding should any dirt get under the
carburetor float needle. Leaving the tank selector in
either tank position can allow severe flooding, which
may ruin the engine by diluting the oil.
Right Tank: Fuel flows from the right tank when the
selector is turned 1/4 turn toward the right.
Left Tank: Fuel flows from the left tank when the
selector is turned 1/4 turn toward the left.
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