FUEL AND EXHAUST SYSTEMS
The vacuum hose (A, Figure 42) is
smaller than the fuel line (B).
c. Partially fill the tank with fresh fuel and
check for leaks around the tap and at the
fuel line connections.
The vacuum-operated fuel tap has no OFF
position. The tapshould pass n d fuel in O N or
RES until a running engine provides the
vacuum required to operate the diaphragm
valve. In PRI (prime) the tap will pass fuel
whether the engine is running or not.
S o m e fuel m a y spill during these
procedures. Work in a well-ventilated
area at least 50 feet from any sparks or
James, including gas appliance pilot
lights. Do not smoke in the area. Keep a
BC ratedjre extinguisher handy.
1. Remove the fuel tank.
2. Turn the fuel tap to PRI (prime) and drain
the fuel into a clean gas can.
3. Remove the 2 fuel tap mounting bolts and
the tap and O-ring.
4. Inspect the fuel tap mounting O-ring and
clean the feed tube screen whenever you
remove the tap from the tank (Figure 43).
5. T o install, reverse the removal steps. Note
a. The vacuum hose (A, Figure 42) is
smaller than the fuel hose (B).
b. Make sure that fuel does not flow in the
ON position when the engine is not
c. Check for leakage after you install the fuel
See Figure 44. Disassemble the tap and
check that t h e O-ring (Figure 45) and
diaphragm are clean and undamaged. Look for
pin holes in the diaphragm. Any bit of debris
on the valve O-ring will prevent the valve from
Make sure the diaphragm spring is in place.
Install the diaphragm cover as shown in Figure
Models with a fuel level gauge or warning
light have a sending unit mounted in the
bottom of the fuel tank. When installing a
sending unit, make sure the mounting O-ring is
in good condition. When installing a fuel level
gauge sending unit, the arrow on the bottom of
the sending unit should point to the front ofthe
tank (Figure 47).
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