ARMY TM 9-2805-257-14
AIR FORCE TO 38G2-103-2
NAVY NAVFAC P-8-612-14E
This task covers:
General Mechanics Tool Kit (Item 1, Appendix B)
Gasket, Carburetor Mounting (NSN 5330-00-819-8733)
Wrench, Torque (NSN 5120-00-640-6364)
Gasket, Throttle Housing Front (P/N 9786E64-6)
(Item 2, Appendix B)
Gasket, Throttle Housing Rear (P/N 9786E65-3)
Gasket, Throttle Housing to Carburetor
Rags, Wiping (Item 6, Appendix D)
Solvent, Drycleaning (Item 7, Appendix D)
a. Adjustment. (figure 4-27)
Turn main adjustment needle (1) and idle adjustment needle (2) fully clockwise to stop.
Turn main adjustment needle (1) 3/4 turns counterclockwise.
Turn idle adjustment (2) 1/2 turns counterclockwise.
Start and warm-up engine (para. 2-9).
Apply end item load and observe exhaust.
If exhaust is black, turn main adjustment needle (1) clockwise.
If engine runs rough or lacks power, turn main adjustment needle (1) counterclockwise.
To set idle speed, turn idle speed regulating screw (3) clockwise to increase idle or counterclockwise to
Stop engine (para. 2-10).