S&S SH Series - Tune up Information; Super Stock Ignition System

Engine
Total Advance,
VOES Grounded
(deg BTDC)*
Max Advance,
Wide Open
Throttle (WOT)
RPM Max
Advance
@ WOT
SH80 35° 30° 2000
SH93 35° 31° 5000
SH93H 35° 30° 5000
SH103 33° 28° 5000
P74 35° 30° 2000
P93 35° 31° 5000
P93H 35° 30° 5000
P103H 33° 28° 5000
KN74 40° 35° 2500
KN93 40° 35° 2500
7
OWNERS MANUAL — S&S® KN, P, AND SH-SERIES ENGINES
5. After the rst 50 miles on the dyno, it is recommended the normal
break-in schedule be followed under normal riding conditions on
the street. See Step 5 on the previous page.
The oil lter used on an S&S® KN, P, or SH-Series engine should be rated
at 24 microns. Spin-on lters should not have an anti-drain back valve.
S&S lters are available to replace Harley-Davidson® #63805-80A and
63796-77A. The S&S part numbers are 31-4101 and 31-4102.
TUNE UP INFORMATION
S&S KN, P, and SH-Series engines come from the factory with Champion
RN12YC 14mm long reach spark plugs (S&S PN 55-1321) that should be
gapped between .038- and .042-inch. If you are not using an S&S Super
Stock® ignition, refer to your ignition manufacturer for any additional
recommendations.
SUPER STOCK™ IGNITION SYSTEM
S&S KN, P, and SH-Series engines come from the factory with an S&S
Super Stock™ ignition system installed. S&S Super Stock ignition
modules are factory programmed for the specic engine they are
intended for. In addition the module is installed and timed to S&S
specied timing. Changing the timing or removing the Super Stock
ignition may void your warranty.
If you choose to install another after market ignition module, make
sure that the ignition advance is set according to these specications.
If the ignition system has a rev limiter, make sure it is set no higher than
6200 RPM.
STARTUP  ENGINES EQUIPPED WITH S&S SUPER E
OR G CARBURETOR
1. S&S Super E & G carburetors have a mixture enrichment/fast idle
lever used to aide in cold starts and help during the warm-up
period. Do not ride the motorcycle with the lever engaged.
2. Turn the fuel supply valve on, wait a moment to make sure the
carburetor bowl is full, and twist the throttle twice to prime the
carburetor—starting in extremely cold weather may require
additional priming.
3. Pull the fast idle lever up, turn on the ignition and press the start
button or kick the engine through.