Repairing Leaking Tanks

Tank leaks may be arc welded, gas welded or soldered. However, only firms or persons qualified to

Figure 3F-16. Diaphragm Type Fuel Supply Valve and Strainer

Turning the unmarked handle to vertical position turns on main fuel supply; turning "reserve" handle to vertical position turns on reserve supply.

The fuel strainer is located on top of the supply valve inside the fuel tank. If the supply of fuel is impeded, as indicated by irregular carburetion, remove the supply valve from the tank and thoroughly clean the strainer. Be sure to drain the tank before removing the supply valve.

Before installing supply valve, coat threads with a fuel sealer.


Fuel supply is shut off when plunger for reserve supply valve, located just ahead of the left tank filler cap, is turned down fingertight against its seat. The plunger is unscrewed (but not lifted) to use main fuel supply. The plunger is lifted to use reserve supply.

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