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5. FUEL SYSTEM PEOPLE 125/150
Vacuum Diaphragm/Piston
Push the needle holder in and turn it left to Install
remove the needle holder.
Remove the spring and jet needle from the
piston.
Be careful not to damage the vacuum
diaphragm.
Remove
Jet Needle
INSPECTION
Inspect the needle for stepped wear.
Inspect the vacuum piston for wear or
damage.
Inspect the diaphragm for deterioration and
tears.
Vacuum Diaphragm
Vacuum Chamber Cover
ASSEMBLY
Install the vacuum piston/diaphragm in the
carburetor body and align the tab on the
diaphragm with the groove in the carburetor
body.
Install the spring.
Install the vacuum chamber cover and tighten
it with the two screws.
· Be careful not to damage the diaphragm.
· Hold the vacuum piston while
tightening the vacuum chamber cover.
Vacuum Diaphragm
Float Chamber
FLOAT CHAMBER
DISASSEMBLY
Remove the four float chamber screws and
the float chamber.
5-7