11-49 ENGINE CONTROLS
11-50. Engine controls of the push-pull type include the throttle, mixture and carburetor heat controls. The engine controls are equipped with position-lock ing devices which prevent vibration-induced"creep-ing" of the controls
NOTE
Some controls have intricate parts that will fall out and possibly be lost if the control is pulled from housing while the control is dis- connected.
11-51. RIGGING. When adjusting any engine control, it is important to check that the control slides smooth- ly throughout its full range of travel, that it locked securely if equipped with a locking device and the arm or lever which it operates moves through its full arc of travel.
CAUTION
Whenever engine controls are being disconnected, pay particular attention to the exact position, size, and number of attaching washers and spacers Be sure to install attaching parts as noted when connecting controls.
11-52 THROTTLE CONTROL.
NOTE
Before rigging throttle control shown in figure 11-8, check that staked connection between rigid conduit and flexible conduit is secure. If any indication of looseness or breakage is apparent, install new throttle control before continuing rigging procedure
a. Pull throttle control out(idle position) and re- move throttle control knob.
b. Screw jam nut all the way down(clockwise) and install throttle knob. Screw knob securely against the jam nut. Do not back jam nut out. This will pre- vent bottoming and possible damage to the staked connection.
c. Disconnect throttle control at the carburetor throttle arm, push throttle control in until jam nut contacts friction lock. While the friction lock is loose, then pull control out approximately 1/8 inch for cushion. Note position of larger washer at car buretor end of control. Install washer in same posi tion when connecting control to arm
d. Tighten friction lock, being careful not to change position of the throttle.
e. Move throttle arm on the carburetor to full open, adjust rod end at end of throttle control to fit, and connect to arm on carburetor.
f. Release friction lock and check full travel of arm on carburetor. further adjustment is required, make all adjustments at the carburetor end of control. DO NOT change jam nut setting.
g. Tighten rod end locknuts at carburetor end of control Be sure to maintain sufficient thread en gagement between rod end and control
NOTE
Refer to the inspection chart in Section 2 for inspection and/or replacement inter- val for the throttle control..