Fuel / Exhaust
4.19
Fuel / W ater Seapar ator
IMPORTANT: Prior to performing any adjustments to car-
buretors check the following:
S Verify that no water is present in the fuel system. Check
the water trap for presence of water.
S Check for proper choke operation.
S Verify all fuel and vent lines are routed and secured
properly.
S Check the reed valves for damage.
S Check fuel pump diaphragms for damage.
S Verify all seal and gaskets are in good condition (no air
leaks present).
S Check engine compression (see engine section).
S Verify proper fuel flow (i.e. fuel flow through shut off
valve).
S Synchronize carburetors; inspect throttle plates (butter-
fly) for damage.
Fuel/Water Separator - (Carbureted Models)
The water trap should be checked daily and/or whenever
refueling. 1²-2² (2.5-5 cm) of water depth in water trap can
cause engine to run poorly. If water trap fills quickly, ex-
cessive water may be present in fuel tank.
The water trap includes a filter to improve water separa-
tion, and a colored float to indicate water level. Empty trap
if float appears to be off the bottom.
NOTE: The maximum travel of the float is to the base of
the filter, or approximately one half the depth of the bowl.
Visually inspect the bowl for water collected at the bottom
of the bowl. See illustration. If water is present it will ap-
pear as a clear liquid at the bottom of the bowl. T urn off
fuel valve. Wrap a shop towel around the bowl and remove
bowl by turning counterclockwise. Take care not to spill
fuel while removing. Wipe up spills immediately with a
shop cloth. Dispose of fuel properly and follow all gasoline
handling precautions found on page 4.2. Reinstall separa-
tor bowl taking care that the O-ring is undamaged and in
the proper place. Hand tighten securely. Check carefully
for fuel leaks around bowl.
W ARNING
Gasoline is extremely flammable and explosive under certain conditions. Do not smoke or allow flames or sparks
in the work area. Be sure the work area is well ventilated. See gasoline handling warnings found on page 4.4.
Failure to heed these warnings may result in serious injury or death.
Filter
Full Level as
Filter Restricts
Movement (lev-
el not marked)
W ater Level
Float
Water Trap -
Typical
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