(1) AIR SCREW
(2)THROTTLE STOP SCREW
74
FUEL SYSTEM
INSTALLATION
Install the carburetor in the reverse order of removal.
NOTE
Make sure that the O-rings on the intake pipe and insulator are
installed properly.
Tighten the connecting tube band screw.
Install the air vent and drain tubes.
Install the throttle valve.
AIR SCREW ADJUSTMENT
NOTE
The air screw is factory pre-set. Adjustment is not necessary
unless the carburetor is overhauled or a new air screw is
installed.
Turn the air screw clockwise until it seats lightly and then back
it out to specifi cation given below.
CAUTION
Damage to the air screw seat will occur if the screw is
tightened against the seat.
AIR SCREW INITIAL OPENING:
2.5
Warm up the engine to operating temperature.
WARNING
If the engine must be running to do some work, make
sure the area is well-ventilated, Never run the engine in
an enclosed area. The exhaust contains poisonous carbon
monoxide gas that may cause lass of consciousness and
lead to death.
Stop the engine and connect a tachometer.
Start the engine and adjust the idle speed with the throttle stop
screw.
IDLE SPEED:
1.800 +/ 200 rpm
Turn the air screw in or out to obtain the highest engine speed.
Readjust the idle speed to specifi ed rpm with the throttle stop
screw.
Make sure that the engine does not miss or run erratically.
Содержание madass
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