B
FUEL SYSTEM
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
129
Repair and Service Manual
653045
NOTICE: Before you disassemble the carburetor,
drain the fuel bowl and clean the outside of the car-
buretor thoroughly.
Take care when you disassemble the carburetor or
removing the jets. Most carburetor malfunctions are due
to wear or clogging of internal passages with foreign
material. DO NOT bend the float pin during removal.
Refer to “Carburetor fault diagnosis”.
Remove the float bowl (1) by removing the retaining
screw (2) and washer (3) (Ref. Fig. 6).
Inspect the bowl gasket (4) for nicks or cuts. Carefully
press out the float pin (5), remove the float (6) and the
inlet valve (7). Inspect the inlet valve for wear at its tip.
Remove the main jet (8).
Use solvent to wash all parts and blow through all pas-
sages with compressed air. Replace all gaskets and any
parts which show significant wear or damage. The drain
screw (9) and spring (10) can be used to drain the fuel
from the bowl without removing the bowl.
Fig. 6 Carburetor Disassembly
Float Level Alignment
NOTICE: The float level cannot be adjusted but
should be inspected for proper alignment.
Turn the carburetor upside down. Remove the bowl. With
the carburetor inverted, the B side top edge of a properly
adjusted float will be slightly above parallel to the bowl
gasket surface and both sides of the float will be level with
each other (Ref. Fig. 7). If the sides of the float are not
parallel or if the B side of the float is not slightly above
parallel with the bowl gasket surface then the float should
be replaced. Reinstall the bowl, washer and the screw.
Check for fuel leaks.
Check for free movement of the choke shaft before
installing the carburetor. Lubricate the bushings with WD-
40® oil or equivalent.
Fig. 7 Float Adjustment
Carburetor Installation
To decrease the risk of possible
injury from explosion or fire, check
for clogged or kinked hoses.
Clogged or kinked carburetor hoses are not only
detrimental to the proper operation and perfor-
mance of the vehicle, but can also be a safety haz-
ard in the case of fuel leaking on a hot engine.
Do not let the carburetor vent hose
become clogged or kinked. Engine
heat will cause the fuel in the carbu-
retor bowl to expand and may result in fuel being
expelled from the carburetor if unable to vent
through the vent tube.
Replace the carburetor in the reverse order of disassem-
bly. Use a new gasket to ensure sealing of carburetor.
Tighten hardware to the torque value specified below
7
5
8
6
4
1
3
9
10
2
Float should be aligned so
that top is parallel or
“slightly above” parallel
with gasket surface
Float
Float
Valve
Carburetor
Body
Float Chamber Stem
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