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12. CARBURETOR
Fig. 3-54
®
®
®
®
Rubber cap
Top set
Throttle valve spring
Jet needle set
Throttle valve
Carburetor body
Throttle stop screw
Air screw
Float valve
Jet holder
Main jet
Gasket
Slow jet
Needle jet holder
Float
Float arm pin
Float chamber
Disassembly
ARWN
=
. Remove the carburetor assembly from the machine.
. Remove the float chamber from the carburetor.
. Remove the slow and main jets.
. Withdraw the float arm pin; take out the float.
. Remove the float valve seat.
Inspection
1.
2;
. Blow the main and slow jets to determine that these are
3
4.
5
Check the throttle valve for damage.
Check the jet needle for wear.
not clogged.
Check the float valve for proper contact with the valve
seat.
. Adjusting fuel level.
Hold
the carburetor with its main bore in a vertical
position, so the float arm tang will just close the float
valve, without compressing the spring loaded plunger in
the end of the valve. Measure float height with a float level
gauge.
Float height (distance between the carburetor body and
the opposite
edge of the float) should
be 22.5mm
(0.886 in.) when the float valve just closes.
If adjustment is needed, carefully bend the float arm tang
toward or away from the float valve until the specified
float height is obtained. Replace any damaged or leaking
float.
Fig. 3-55
® Slow jet
@ Main jet
® Float
Fig. 3-56
@ Float arm
@ Float
® Float arm
© Float arm pin
@® Float level gauge
45
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