Honda GX630, Workshop Manual

Page: 61 / 149

FUEL SYSTEM
6-7
PILOT SCREW REMOVAL/
INSTALLATION
Remove/install the pilot screw (1) using the special tool
(2).
CARBURETOR BODY CLEANING
• Some commercially available chemical cleaners are
very caustic. These cleaners may damage plastic or
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 a Honda carburetor.
• High air pressure may damage the carburetor body.
Use low air pressure (207 kPa (2.11 kgf/cm 2 , 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 compressed air.
– Pilot jet hole (1)
– Main air jet (2)
– Main nozzle holder (3)
– Pilot air jet (4)
– Bypass ports (5)
– Pilot outlet ports (6)
– Internal vent port (7)
TOOL:
PILOT SCREW WRENCH (D) (2) 07KMA-MS60101
PILOT SCREW OPENING:
GX630/GX630R:
L side (No.1 cylinder): 2 turns out
R side (No.2 cylinder): 1 - 7/8 turns out
GX660/GX660R:
L side (No.1 cylinder): 1 - 3/4 turns out
R side (No.2 cylinder): 1 - 7/8 turns out
GX690/GX690R:
L side (No.1 cylinder): 1 - 7/8 turns out
R side (No.2 cylinder): 1 - 3/4 turns out
(2)
(1)
To prevent serious eye injury, always wear safety
goggles or other eye protection when using com-
pressed air.
(1)
(7)
(3)
(4)
(5)
(6)
(2)
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