Small Engines (Lawn Mowers, etc.): Auto Electric wiring system, starter solenoid, stroke air


Question
I seek your advice on the basic principles of the electrical system for the engine which I am currently working on.

The engine is a ROTAX 582 UL (2-cylinder/2-stroke air-cooled twin ignition - 2 coils/4 spark-plugs). The electrical is basically a magneto system.

I want to install a new ignition switch and I am facing a problem as the new switch is of a new version and is slightly different from the old defective unit.

The wiring instructions for the ignition switch are as follows:
1.   Connect wire from RIGHT MAG to terminal 1
2.   Connect wire from LEFT MAG to terminal 2
3.   Connect wire from POSITIVE terminal of power supply to terminal 3
4.   Connect wire from STARTER SOLENOID to terminal 4
5.   Connect wire from terminal 6 (centre GND terminal) to nearest structural member.

NOTES:
Use JUMPER on terminal 1 when LEFT MAG has IMPULSE COUPLING. (* cannot understand, whether this is applicable?)

The engine has an electric starter motor. I can crank the starter but the sparks are very weak.
Can you please advise me on the correct wiring for the ignition switch?

I also want to wire up the charging system.


Answer
 Hello Yahaya:

 This is an Aircraft Engine. Go to this Addy http://www.rotax-owner.com/linksintro.htm and Click, Links to Rotax Parts and Tech Info. Hope this Helps. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John