Mallory Ignition Mallory UNILITE DISTRIBUTOR 576 - Manual

1
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. B) 08/03
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.
MALLORY TECHNICAL SUPPORT (775) 882-6600 Visit us on the web at: www.mrgasket.com
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.
FIGURE A
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