Carburetor Assembly; Carburetor Cleaning - Honda Motorcycle Service Manual

FUEL SYSTEM
ACCELERATOR PUMP
Remove the screws and diaphragm cover.
Remove the spring and diaphragm.
Check the rod for bends or damage.
Check the diaphragm for damage or pin holes.
Damage to the rod andior diaphragm reduces the efficiency of
the pump, leading to "hunting" during acceleration.
Blow open the fuel passages in the diaphragm cover with low
pressure air.
AIR CUT-OFF VAVLE
Remove the screws, air cut-off valve cover, spring, diaphragm
and O-ring.
Check the diaphragm for damage or pin holes.
Check the O-ring for damage or fatigue.
A worn O-ring andior damaged diaphragm causes air to leak
from the air cut-off valve vacuum chamber.
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DIAPHRAGM
Blow open alr passages m the cover wlth compressed alr
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DIAPHRAGM
CARBURETOR CLEANING
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After removing all parts, blow open air and fuel passages in the
carbcretor body with compressed air.
CAUTION
.
Cleaning the air a@ fuel passages with a piece of wire.
will damage the carburetor body or fuel pump.
Remove the diaphragms to prevent damage t o them
before using air to blow open the passages.
CARBURETOR ASSEMBLY
AIR CUT-OFF VALVE
Install the diaphragm on the carburetor body.
Install the O-ring with its flat side pointed downward
Install the sprlng on the cover and
install
the cover on the car-
buretor body. Be sure that the d~aphragm and 0-rmg do not In-
terfere wlth the cover.
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O-RING COVER
Date of Issue: Sep., 1988
O HONDA MOTOR CO., LTD.