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YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Champion EIS Ignition System
EIS Replacement and Timing Procedure
NOTICE: The Champion EIS includes the Ignition Module, two coil packs, and attaching
cables.
1. Remove the EIS from the engine as follows:
A. Disconnect the coil packs from the EIS.
B. Disconnect the cables from the spark plugs.
C. Remove the coil packs from the engine.
D. Disconnect the wiring harness from the EIS.
E. Remove EIS hardware fasteners from the EIS; discard the lock washers. Remove the EIS.
F. Remove and discard the cotter pin.
G. Remove the drive gear.
NOTICE: This procedure can be done on an engine that is installed in the airframe. This
procedure is to be done for initial installation as follows:
2. Install the EIS per the latest edition of the Champion Instruction CH42PR20A.
Light Speed Plasma III and Magneto Ignition System
Lycoming has approved an alternate ignition system for the YO-233-B2A. This system consists of a
single magneto P/N 66GP-0RANN, ignition harness P/N 67P20440, and a single Light Speed
Engineering, LLC Plasma III kit P/N 66K29678-Y. Refer to the latest revision of Service Letter No.
L283 for additional information.
Convert the Engine from the Champion EIS Ignition System to the Light Speed Plasma III
and Magneto Ignition System:
1. Remove the Champion coil packs and integral high-tension harness, low-tension harness,
ignition module, and any other hardware or wiring used for installation of the Champion
ignition system.
2. Remove the drive gear from the Champion ignition module and install it on the magneto.
Torque the drive gear nut to 10 to 26 ft.-lb. (14 to 35 Nm) and install a new cotter pin.
3. Install a P-lead for connection from the ignition switch to the magneto in accordance with
standard aviation wiring practices.
4. Refer to the Light Speed Installation and Operation Manual for instructions to install, test,
inspect, maintain, and troubleshoot the Plasma III CDI (Capacitance Discharge Ignition).
The manual is available to download at
5. Install the magneto per the "Magneto Installation" section in this chapter.
© 2021 Avco Corporation. All Rights Reserved
February 2021
74-30 - ELECTRONIC IGNITION SYSTEM
http://lightspeed-aero.com/Manuals/Ignition.htm
74-30
Page 169
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