5-4
FUEL SYSTEM
•Air leaks out of the vacuum chamber if the
diaphragm is damaged in any way-even a pin hole.
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
JET NEEDLE
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
DIAPHRAGM
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
NEEDLE HOLDER
● Remove the diaphragm cover.
● Remove the diaphragm spring, diaphragm assembly.
● Turn the jet needle with a ⊖ screwdriver, and remove
the needle spring, spring holder, and jet needle from the
vacuum piston.
CARBURETOR DISASSEMBLY
● Remove the drain tube and air band hose.
● Loosen the 4 diaphragm cover setting screws.
CARBURETOR INSPECTION
● Check the jet needle for stepped wear and replace if
necessary.
● Check the vacuum piston for damage and replace if
necessary.
● Check the diaphragm for damage, pin holes, wrinkles
and bends and replace if necessary.