How To Use - W&W Cycles 12-175 Manual De Instrucciones

HOW TO USE

Vintage Electronic Ignitions
Auto Advance
Articles 12-175, 12-176
Date 2022-06-29
Editorial ID 138566
There are two kits that are available:
Kit →1948 fits Harley-Davidson models: 45" and
Big Twin sidevalves 1937 - 1948, and OHV Big Twin
models 1936-1948.
Kit 1949→ fits Harley-Davidson models: OHV 1949-
1960, 45" 1949-1963, and model K and Sportsters
1952-1964.
→1948 timer bases have a vertical advance wire
post, 1949→ timer bases have an advance wire post
that sticks out horizontally to the side:
→1948
© W&W Cycles AG, wwag.com
1949→
The difference of the two kits is the timer rotor
that mounts to the breaker cam. The electronic
module is the same for all ignition timers. Gene-
rally and especially with 1948 models it must be
controlled which timer model you have, and if you
have acquired the right kit.
The module works with either 6 V or 12 V battery
powered electrics. The ignition spark is up to 60%
stronger than with breaker points. There are no
moving parts on this ignition (safe for the rotor,
of couse ;-)) that can be subject to wear; therefore
once set correctly the timing will not change any-
more. Ignition advance is regulated automatically
by the module.
There is a choice of 9 different advance curve set-
tings, each one corresponding to the positions 1-9
of the module switch. Curve #1 is the most, curve
#9 the least aggressive one. Setting 0 will only be
used for carburetor adjustments as it fixes the ti-
ming to full advance at all rpm.
Kickstart timing advance can be adjusted separa-
tely from 10° - 20° before TDC. (After being kick-
started the engine will even run for about 10 sec in
kickstart mode before settling to standard mode.)
Each kit consists in the following parts:
• module and base plate
• 75 cm of wire loom
• trigger rotor, multi-piece: upper and lower
halves, 2 screws M3, 1 set screw M3
DE
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IT
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