The fuel switch has three positions:
The arrow on the handle points to the position selected.
ON = Normal operation setting. Fuel will not flow through the hose to the carb until the engine is on. Gas in the carb bowl is used to start the engine. The arrow is DOWN when in the on position.
PRI = Fuel flows through the hose to the carb at all times. This setting is used if the bike has been sitting around and the fuel level in the carb may be too low to start the engine. For safety use this setting only to fill the carb bowl with gas or for brief testing.
RES = If you run out of gas, this setting will provide extra gas so you can hopefully find more.
ON or RES (if fuel low). Only use PRI to reprime carbs whenthey have been run dry/ serviced.
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