Figure 73- 1. Carburetor
4. Turn screw counterclockwise until engine runs smoothly again. Continue to turn screw in same
direction until engine begins to run rough again. At this point, fuel mixture will be too rich and engine
speed will decrease.
5. Advance screw to a midway position between lean and rich fuel mixture; rpm of engine will reach
maximum speed for idle mixture settings.
ADJUSTMENT OF IDLE SPEED
1. Pull back throttle control until it is completely aft and in the closed position. observe engine speed on
tachometer.
2. Adjust idle adjustment screw to obtain from 550 to 650 rpm. Rotate screw clockwise to increase speed
of engine; counterclockwise to decrease engine speed. Screw is located on throttle arm.
—NOTE—
One complete revolution of carburetor idle screw provides a
variation of approximately 100 RPM in idling speed.
73 - 11 - 00
Page - 73-02
Reissued: August 1, 1986
2I13
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
To Next Page
Loading...
