ARMY TM 9-2805-262-14
AIR FORCE TO 38G2-90-1
NAVY NAVFAC P-8-613-14E
This task covers:
General Mechanics Tool Kit (Item 1, Appendix B)
Air intake elbow removed for removal or carburetor
Test Set, Tachometer and Dwell
(NSN 4910-00-788-8549) (Item 2, Appendix B)
Rags, Wiping (Item 7, Appendix D)
Solvent, Drycleaning (Item 8, Appendix D)
Gasket, Carburetor Mounting (P/N 9786E26-2)
a. Adjustment. (figure 4-17)
Turn main adjustment needle (1) and idle adjustment screw (2) fully clockwise.
turn main adjustment needle (1) 3/4 of a turn counterclockwise.
Turn idle adjustment needle (2) 1/2 turn counterclockwise.
Start engine (para. 2-9), and allow engine to warm-up.
Apply a load, and adjust main adjustment needle(1) until a smooth idle is achieved.
Set idle speed adjustment (3) to idle position.
Adjust idle speed of engine by adjusting idle speed screw(2) until an idle speed of 200-900 r.p.m. is
Stop engine (para. 2-10).