Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 258

PIPER CHEROKEE WARRIOR SERVICE MANUAL
u . Fit the distributor housing to the frame. Making sure the bosses of the distributor housing are seat-
ed in the slots of the frame. Start by fitting the top boss (next to the vent) and assemble the distributor housing
into place.
v. Secure the distributor housing to the frame with four screws and four lock washers. Torque to 24
in. lbs. Remove timing pin.
8-27. INTERNAL TIMING OF 4200/4300 SERIES MAGNETOS.
When installing new or adjusting breaker points, the internal timing of the magneto must be correct,
before installing and timing the magneto to the engine. Perform the following to find the number one tower:
a . Insert the T-118 timing pin (refer to Figure 8-8) in the L or R hole in the distributor block (depending
on rotation of the magneto).
b. Turn rotor opposite the rotation of the magneto until the pin engages the gear.
c. If the pin is binding and will not go in the hole in the gear, a pointer on the gear has been hit. Pull
the pin out, enough to continue opposite rotation until the pointer has passed. Re-insert pin.
d. When the pin sticks through the hole in the gear about 1/4 inch, the magneto is now ready to fire
number one cylinder.
e. Install magneto on the engine and remove the timing pin. The magneto is now ready to be timed
to the engine.
8-2 8 . 4200/4300 SERIES MAGNETO S I N S TA L L ATION AND TIMING M A G N E TO TO ENGINE
P R O C EDURE.
Be sure magneto switch is in OFF position and the "P" lead
is g r o u n ded.
a. Install magnetos to the engine
b. Time magnetos by the following procedure:
1. To time left magneto:
A. Remove the top spark plug from the number one cylinder. Place a thumb over the spark
plug hole and turn the engine crankshaft in the normal direction of rotation until the compression stroke is
reached. The compression stroke is indicated by positive pressure inside the cylinder tending to lift the thumb
off the spark plug hole. In this position both valves of the number one cylinder are closed. Turn the crankshaft
opposite to its normal direction of rotation until it is approximately 35 degrees BTC on the compression stroke
of number one cylinder. Rotate the crankshaft in its normal direction of rotation until the 25 degrees mark on
the starter ring gear and hole in the starter housing align.
B. Insert the T-118 timing pin (refer to Figure 8-7) in L or R hole in the distributor block.
Turn rotor opposite the rotation of magneto until the pin engages the gear and install magneto and gasket on
the mounting pad of the accessory housing and remove the timing pin. Tighten the bolts finger tight.
C. Connect a standard timing light between engine ground and the left magneto
condenser-terminal. Select magneto switch must be ON.
Revised: February 28, 1995
Effectivity
CAUTION
Do not bend coil high tension lead.
NOTE
No need to spark out these magnetos.
WARNING
1K18
Island Enterprises
POWER PLANT
Magneto (SLICK)