576 Datasheet, PDF (1/2 Pages) Mallory performance club – HARLEY DAVIDSON SPORTSTER MOTORCYCLES

FORM 1479 (REV. A) 9/99
INSTALLATION INSTRUCTIONS
®
UNILITE^® DISTRIBUTOR FOR
1952-70 HARLEY DAVIDSON^®
SPORTSTER^® MOTORCYCLES
Part No. 576
NOTE: THIS DISTRIBUTOR WILL ALSO FIT 1930-73 FLATHEAD (45 AND UL).
IMPORTANT
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.
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.
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.
An optional spring kit (PN 29014) is available for this distributor. The kit gives Step 2
you a choice of 14 different advance curve settings.
Remove the ground cable from the battery. Remove the point wire at the coil.
Remove the point distributor.
FIGURE A
ADAPTER RING
STANDOFF
SET SCREW
HOUSING
SCREW
SLEEVE NUT
UNILITE PLATE ASSY
COVER
SHUTTER WHEEL
O-RING
WASHER
ROLL PIN
PIN
GROMMET
YH ADVANCE
SHAFT
GEAR
CONNECTOR