Piper Dakota - Adjustment of Throttle and Mixture Controls; Controlling; Installation of Engine Primer; Primer Jets

INSTALLATION OF ENGINE PRIMER (figure 73-2)
1. Remove pump handle and piston by unscrewing knurled face nut, if previously installed.
2. Insert cylinder assembly through back side of panel.
3. Insert piston into cylinder and tighten knurled face nut.
4. Position primer and tighten locknut on cylinder behind panel.
5. Connect fuel lines to primer.
6. Disconnect primer line inside engine compartment. Operate pump to ensure proper operation.
PRIMER JETS
Remove primer jets as follows:
1. Disconnect supply line from each jet. Remove primer jet from cylinder with a deep socket and light
pressure.
—CAUTION—
Do not use sharp objects or wire brush to clean jet tube
2. To clean jet, soak in a carbon remover solution long enough to loosen any dirt and blow clean with air
pressure.
3. Install jet finger tight to assure that threads are not crossed and then tighten to a torque of 60 inch-
pounds. Align and install fuel supply lines and tighten to a snug fit.
—NOTE—
If fuel stoppage of primer system still exists, check supply lines
for stoppage and bent or collapsed walls..
CONTROLLING
ADJUSTMENT OF THROTTLE AND MIXTURE CONTROLS (figure 73-3)
Throttle and mixture controls are adjusted so that when throttle arm on carburetor is rotated forward
against its full throttle stop and mixture control is rotated forward against its full rich stop, the cockpit control
levers of throttle and mixture should have 0.0l0 to 0.030 of an inch spring back when in forward position.
1. Adjust throttle as follows:
a. At carburetor, disconnect clevis end of throttle control cable from control arm. Loosen jam nut
securing clevis end.
b. Adjust linkage by rotating clevis end on cable to obtain 0.010 to 0.030 of an inch spring back on
instrument stop when in full throttle position.
c. Reconnect clevis end to control arm and safety.
2. Adjust mixture as follows:
a. At carburetor, disconnect clevis end of mixture control cable from control arm. Loosen jam nut
securing clevis end.
b. Adjust linkage by rotating clevis end on cable to obtain 0.010 to 0.030 of an inch spring back on
instrument panel stop when in full rich position.
73 - 21 - 00
Page - 73-04
Reissued: August 1, 1986
2I15
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL