Mallory Ignition Mallory UNILITE DISTRIBUTOR 576 - Manual

UNILITE ® DISTRIBUTOR FOR
1952-70 HARLEY DAVIDSON ®
SPORTSTER ® MOTORCYCLES
Part No. 576
NOTE: THIS DISTRIBUTOR WILL ALSO FIT 1930-73 FLATHEAD (45 AND UL).
INSTALLATION INSTRUCTIONS
®
FORM 1479 (REV. A) 9/99
GENERAL INFORMATION
Any coil or combination of coils with a total primary resistance of at least 2.0
ohms can be used with this distributor. We recommend a 2-3 ohm coil for
racing and a 3-4 ohm coil for street use. A coil with 4-5 ohms resistance may be
used. However, performance may be reduced, even in street applications.
NOTE: Check the charging system and make sure that it is producing no more
than 16 volts.
We recommend a spark plug gap of .040" when using a 2-3 ohm coil. A gap
of .030" is recommended when using a 3-4 ohm coil.
An optional spring kit (PN 29014) is available for this distributor. The kit gives
you a choice of 14 different advance curve settings.
INSTALLATION
Step 1
Turn the ignition switch to the off position. With the point distributor still in place
and correctly timed, rotate the engine until the points begin to open on the front
cylinder lobe. The front cylinder lobe is the narrower of the two.
If the point distributor is not installed, rotate the engine to the beginning of
the compression stroke. Locate the timing hole. Continue rotating the engine
until the advance mark is visible through the timing hole.
Step 2
Remove the ground cable from the battery. Remove the point wire at the coil.
Remove the point distributor.
A 1952-70 Sportster ® DISTRIBUTOR CLAMP (ORIGINAL OR AFTERMARKET) IS REQUIRED
TO INSTALL THIS DISTRIBUTOR. BECAUSE THE UNILITE ® MODULE USED WITH THIS
DISTRIBUTOR REQUIRES 7-16 VOLTS, A 12 VOLT ELECTRICAL SYSTEM IS ALSO
REQUIRED.
IMPORTANT
HOUSING
ADAPTER RING
STANDOFF
SCREW
SLEEVE NUT
SHAFT
SET SCREW
COVER
UNILITE PLATE ASSY
SHUTTER WHEEL
GROMMET
PIN
YH ADVANCE
O-RING
GEAR
ROLL PIN
WASHER
CONNECTOR
FIGURE A