The fuel system consists of several components with their own function that all must work to-
gether for your bike to run like it should. The fuel tank, fuel petcock, filter screen, fuel lines, car
-
buretor, and air cleaner rely on each other to provide the right amount of fuel to the engine.
ENRICHENER
(Carbureted Only)
The enrichener helps cold starting by creating a richer than normal fuel condition. The enrichener
lever is on the top of the carburetor behind the air filter housing. Lift up the enrichener lever for
cold starting. Push down the enrichener lever to close as the engine begins to warm.
FUEL PETCOCK
(Carbureted Only)
The petcock is located under the fuel tank. The petcock position is marked on the base of the
petcock just above the lever. Always close the fuel petcock when the engine is not running. Fail-
ure to do so can result in flooding the engine with fuel, making the motorcycle difficult to start.
FUEL OFF: Turn the lever until it has stopped in the OFF position that is centered between the
ON and OFF positions.
FUEL ON: Turn the lever until it has stopped in the ON position.
FUEL RESERVE: Turn the lever until it has stopped in the RES position.
In the Fuel ON position, fuel enters the petcock from about one inch above the bottom of the
tank. The reserve position allows the fuel that is left in the bottom of the tank to enter the petcock.
If you use your fuel reserve, remember to turn the petcock from the RESERVE to the ON posi-
tion after refueling.
FUEL TANK STRAINER
A screen-type fuel strainer is located on top of the petcock valve inside the fuel tank. This screen
should be inspected and cleaned every service interval. With the gas tank empty (drained through
the fuel valve line with the valve set to reserve), carefully unscrew the fuel supply valve from the
tank. Inspect and clean the fuel strainer, then reinstall the valve in the fuel tank.
FUEL IN-HOSE FILTER
This filter picks up any fine particles that was not caught by the petcock strainer. This fuel filter
is between the fuel tank and the carburetor. Big Bear Choppers recommends changing this filter
between the miles of 100-300 as it picks up particles left from the fuel tank construction. By us-
ing a clear filter housing, you will be able to see the flow of the fuel going through to determine
when to change it or not.
2 . 4 F u e l S y s t e m
