Piper Comanche PA-24 Service Manual page 540

. .
,
PIPER COMANCHE SERVICE MANUAL
1. T •• OTT 1.1 UI ...
Z. 101.1
'''I.e
-'OJUIT""!'IT
101.1 "'IITUII' 1oO.I\IITIoI,"T
•• "UII. lelll."
5 ...... TU'" " ....
FIGl'RE 78-6. IDLE SPEED AND MIXTURE ADJUSTMENT (FUEL I!'IOJECTOR)
78-:1 I Adjustment
or
Throttle And Mixture Controls. The throttle and mixture controls are adju'led '"
that \\ hen the throttle arm on the injector is rotated forward against its full throttle stop and the mixture
arm is rotated forward against its full rich ,top. their respecti'e cockpit controls should be 062 of an inch
in from their full f"rward ,tOps
a At the injector. disconnect the throttle and or mixture control cable end from its control arm
b Loo,en the jam nut securing the cable end.
c Adjust the linkage by rotating the cable end to obtain the 062 of an inch spring back of the
cockpit control le\er when the throttle or mixture control arm contacts its stop
d Reconnect the cable end to its control arm and secure jam nut.
e Pull the throttle and mixture controls in the cockpit full aft
to
ascertain that the injector ,die
screw contacts its stop and the mixture control arm contacts its lean position.
78-:12 Adjustment
or
Idle Speed And Mixture. (Refer to Figure 78-6.)
a Start the engine and warm up in the usual manner until oil and cylinder head temperatures are
normal
b Check magnetos If the "mag-drop" is normal. proceed with idle adjustment
c Close the throttle to idle If the R PM changes appreciably after making the idle mi.,ture adJu,tment
during the succeeding steps. readiust the idle speed to the desired RPM
ISS
l~ED:
8/18/72
2FIO
POWER P l e