Honda GX270H, Manual

Page: 78 / 182

6-15
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FUEL SYSTEM
CARBURETOR BODY CLEANING
• Some commercially available chemical cleaners are
very caustic. These cleaners may damage plastic
parts such as the O-ring, the float and the float seat
of the carburetor. Check the container for
instructions. If you are in doubt, do not use these
products to clean Honda carburetors.
• High air pressure may damage the carburetor body.
Use low air pressure (30 psi or less) when cleaning
passages and ports.
Clean the carburetor body with non-flammable solvent.
Clean thoroughly the following passages and ports with
low-pressure compressed air.
– Pilot screw hole [1]
– Pilot jet hole [2]
– Pilot air jet [3]
– Main air jet [4]
– Transition ports [5]
– Pilot outlet [6]
– Main nozzle holder [7]
– External vent port [8]
– Internal vent port [9]
CARBURETOR INSPECTION
FLOAT LEVEL HEIGHT
Place the carburetor in the position as shown. Measure
the distance between the float top and carburetor body
when the float just contacts the seat without
compressing the valve spring.
If the measured float height is out of specification,
check the float valve and the float valve spring (page 6-
16).
If the float valve and the float valve spring are normal,
replace the float (page 6-11).
To prevent serious eye injury, always wear safety
goggles or other eye protection when using
compressed air.
[8]
[5]
[6]
[4]
[7]
[2]
[1]
[3]
[9]
TOOL:
Float level gauge [1]
07401-0010000
FLOAT HEIGHT: 13.2 mm (0.52 in)
[1]
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