Throttle And Mixture Controls Adjustment (Fuel Injector); Idle Speed And Mixture Adjustment (Fuel Injector) - Piper PA-24 Comanche Service Manual

PIPER COMANCHE SERVice MANUAL
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FIGURE 7A·12. IDLE AND MIXTURE ADJUSTMENT (FUEL INJECTOR)
iA·61. Adjumnenc Of Throm. And Mixaare Controls (Fuel Injector). The throttle and mixt\lre controls
are ldjuned so that when the throttle ann on the injel:tor is rotated forward ..,ainn ics full throttle stop
and the mixture ann is rotated forward against its full rich stOp. theifrespel:tive cockpit control should be
.062 of an inch in from their full forward stops.
a. At the injee:tor. disc:onnel:t the throttle and/or mixture concrol cable end from its control ann.
b. Loosen the Jarft nut securing the cable end.
c. Adjust the linkage by rocating the cable end to obtain the .062 of an inch spring back of the
cockpit control lever when the throttle or mixture control ann conDets its Stop.
d. Reconnect the cable end to its control ann and secure jam nile.
e. Pull the throttle and mixture controls in the cockpit full aft to ascertain that the injector idle
screw contacts its to!' and the mixt\lre control
ann
contacts its Ian pOlition.
1 A-62. Adjustment Of Idle Speed ADd
MixQlre.
(P"elLDjec:ror)
a.
SW't the engine and wann up in the usual manner until oil and cylinder bead tcmper:nures arc
normaL
b. Check magnetos. If the "mq-drop" is normal. proceed with idle adjustment.
c. Close the throttle to idle. If the RPM chaDps appreciably mer making the idle mixture
adjustment during the succeeding steps. rudjust the idle speed to the desired R.PM.
NOTE
The idle murture must be adjusted with the fuel boose pump "ON".
POWER PLANT
ISSUED:
8/18n2
2
016
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