out the idle adjusting screw a couple of turns.
Turn the adjusting screw until there is no clearance
between the screw and pulley, and then continue for
turn from that point.
A. Idle Adjusting Screw
the top covers
and loosen the throttle
adjusting screw locknut.
A. Throttle Adjusting Screw
the adjusting screw to make a slight clearance
between the throttle valve and the bottom o f the
carburetor bore. Turn each adjusting screw until the
four clearances are the same.
This i s a very fine
adjustment, so make i t carefully.
NOTE: An easy method o f performing this adjustment
i s t o carefully insert a piece o f 0.5 -1.0 mm solid wire
in the space between the bottom o f the carburetor bore
and the throttle valve, lifting the valve and slowly letting
i t seat on the wire.
Then, with the carburetor throat
facing downward, slowly turn the adjusting screw out
until the wires fall out. Repeat the procedure above for
Throttle Valve Clearance
Bottom o f Carburetor Bore
the locknuts without changing the position
of the screws.
Install the top covers.
the throttle so that the bottom edge of the
lowest o f the four carburetor throttle valves i s even
with the top o f the carburetor bore. Loosen the lock-
nut and turn the pulley stop screw so the throttle valve
is stopped at that point, and then tighten the locknut.
Throttle Valve Position at Fully Throttle
Pulley Stop Screw
Fast ldle Arm
5. Throttle Valve