Carburetor Body Cleaning; Carburetor Inspection - Honda GX240RT2 Service And Repair Manual

CARBURETOR BODY CLEANING

To prevent serious eye injury, always wear
safety goggles or other eye protection when us-
ing compressed air.
• 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
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)

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.
TOOL:
Float level gauge (1)
FLOAT HEIGHT:
If the measured float height is out of specification,
check the float valve and the float valve spring
(page 6-14).
If the float valve and the float valve spring are normal,
replace the float
gx240ut2_gx270ut2_gx340ut2_gx390ut2
carburetor. Check the
07401-0010000
13.2 mm (0.52 in)
(page 6-10).
container for
(1)
(2)
FUEL SYSTEM
(8)
(5)
(6)
(3)
(4)
(7)
(1)