Fuel Injector - Piper Lance II Service Manual

LANCE II SERVICE MANUAL
2
1. THROTTLE ARM
2. IDLE SPEED ADJUSTMENT
3. IDLE MIXTURE
ADJUSTMENT
4. FUELSCREEN
5. MIXTURE ARM
6. THROTTLE CONTROL CABLE
7. NUT MS20365-1032C
Figure 8-7. Fuel Injector
4. Remove and clean the injector inlet strainer at the first 25 hours of operation
and each 50 hour inspection thereafter. Check the screen for distortion or openings in the
strainer. Replace for either of these conditions. Clean screen assembly in solvent and dry
with compressed air. Damaged strainer O-rings should be replaced. To install the screen
assembly, place the gasket on the screen assembly and install the assembly in the throttle
body and tighten to 35-40 inch-pounds torque. Attach air inlet elbow with spacer and
clamps (Torque clamps to 40-50 in. lbs.)
8-21. ADJUSTMENT OF IDLE SPEED AND MIXTURE.
a. Start the engine and warm up in the usual manner until oil and cylinder head
temperatures are normal. The electric fuel pump must be "ON" for b, c, d and e below.
b. Check magnetos. If the "mag-drop" is normal, proceed with idle adjustment.
c. Set throttle stop screw so that the engine idles at 550-600 RPM. If the RPM changes
appreciably after making the mixture adjustment during the succeeding steps, readjust the
idle speed to the desired RPM.
d. When the idling speed has been stabilized, move the cockpit mixture control lever
with a slow smooth and steady pull toward the "Idle-Cut-Off" position and observe the
tachometer for any change during the leaning process. Caution must be exercised to return
the mixture control to the "Full Rich" position before the RPM can drop to a point where
the engine cuts out. An increase of more than 50 RPM while "leaning out" indicates an
excessively rich idle mixture. An immediate decrease in RPM (if not preceded by a
momentary increase) indicates the idle mixture is too lean.
Issued:
1/3/78