FUEL SYSTEM 2-19
Visually synchronize the throttle (butterfly) valves.
OCheck to see that all throttle valves open and close [A]
smoothly without binding when turning the pulley.
OVisually check the clearance
[B] between the throttle
valve and the carburetor bore in each carburetor.
*If there is a difference between any two carburetors, turn
adjusting screws [C] to obtain the
Install the carburetors (see Carburetor Installation).
Adjust the synchronization
Clean the carburetors in a well-ventilated area, and
take care that there is no spark or flame anywhere
near the working area; this includes any appliance
with a pilot light. Because of the danger of highly
flammable liquids, do not use gasoline or low flash
-point solvents to clean the carburetors.
Do not use compressed air on an assembled carbu-
retor, or the floats may be crushed by the pressure,
and the vacuum piston diaphragms may be dam-
Remove as many rubber or plastic parts from the
carburetor as possible before cleaning the carbu-
retor with a cleaning solution.
This will prevent damage to or deterioration of the
The carburetor body has plastic parts that can-
not be removed.
Do not use a strong carburetor
cleaning solution which could attack these parts;
instead, use a mild, high flash-point cleaning solu-
tion safe for plastic parts.
Do not use wire or any other hard instrument to
clean carburetor parts, especially jets, as they may
Remove the carburetors and drain the fuel.
Disassemble the carburetors.
. Clean all the metal parts in a carburetor cleaning solution.
Rinse the parts in water and dry them with compressed
Blow through the air and fuel passages with compressed
Assemble the carburetors and install them on the engine.