Fig. 14. Suction chamber dismantled.
REMOVAL
1. Blow the carburetors externally.
2. Loosen and remove the air cleaners and the
control retainer with the control rod between
them.
3. Remove the fuel line connections and the
vacuum line connections (to the distributor).
4. Loosen the nuts in the connections on the
shaft between the carburetors. Move up the
connections on the shaft. Loosen the throttle
controls. Remove the carburetors.
Disassembly and cleaning
FLOAT CHAMBER
1. Loosen the float chamber from the carburetor
housing.
2. Remove the nut on the float chamber cap.
Remove the cap and lift out the float. See
Fig. 12.
3. Remove the float lever by pulling out the pin
upon which it pivots.
4. Loosen the needle valve in the cap and the
hollow bolt and strainer.
Fig. 15. Jet unit assembled.
1. Jet and associated parts
JET UNIT
1. Remove the return spring for the jet lever
and the link rod between the lever and the
cam-shaped plate.
2. Remove the bolt for the jet head and the
upper bolt for the link and then remove the
l ever. See Fig. 13.
3. Remove the lock nut and take out the jet
bearings with the spring and gland. Pull out
the jet. Screw off the adjuster nut and remove
its spring.
SUCTION CHAMBER WITH PISTON
AND FUEL NEEDLE
The suction chamber and the piston are matched
as units and if one of these is replaced then the
other must be replaced at the same time. The
suction chamber has three attaching screws which
are staggered to ensure that it is fitted the right
way.
1. Remove the damper (1 Fig. 14) from the suction
chamber.
2. Loosen the screws on the suction chamber and
lift it out.
3. Lift up the spring and the piston. Take care to
ensure that the needle is not damaged (bent).
4. Screw out the lock screw on the fuel needle
and pull it out.
1. Damping plunger
4. Washer
2. Suction chamber
5. Spring
3. Piston
