Fuel Level Gauge
Fuel Return Valve
Fuel Selector Valve
Fuel Tank Cap and
AUXILIARY FUEL INLET
Table 2-5. Description of Model 609-C Fuel System Controls and Indicators.
Indicates amount of fuel in tank.
Range is E (empty)
to F (full).
Used to direct flow of unused fuel to either the
trailer tank or auxiliary fuel supply container.
AUXILIARY LINE RETURN is selected, excess fuel is
directed to auxiliary container. When FUEL TANK
RETURN is selected, return flow is directed to trailer
Used to select fuel tank or auxiliary fuel supply.
When AUXILIARY ON LINE is selected, fuel is supplied
to engine from auxiliary fuel supply container.
FUEL ON is selected, fuel is supplied by trailer tank.
Prevents entry of foreign matter into fuel tank.
Remove to add fuel to tank.
Provides hookup for external fuel supply inlet hose.
Provides hookup for external fuel supply return hose.