Motorcycle Questions? Ask a Mechanic.
I already have this picture, I dont have an alternator but a stater. I want to omit everything but whats nessisary for spark
are you still with me?
they should have put in generator (stator) inseted of alternator.
all of the components in the red box is what is needed for starting and spark.
sorry I have not given you the info you needed. i thought you needed to rewire the unit.
the turning of the flywheel will cause the coil to spark the spark plug. the wire diagram does not show a internal circuitry to tell you how the system works. so i will opt out so another expert can help you.
it may be not be until tomorrow till another expert who can answer your question is on line.
This is a very straight forward lawnmower type engine. You are correct on the wire from the coil being a kill wire. It is a stator charging system (that is an alternator) the ignition system is stand alone only need the kill wire to shut it off. to start this on a bench, clamp it down, hook batt - to the block, hook a small jumper to the small starter terminal with the other end bare, hook a small jumper to the coil wire you mentioned with the other end bare, lastly hook batt + to the large starter terminal. Hook a fuel supply (gravity fed works great here)
To start engine, touch the small from starter bare end of wire to batt + long enough to start it
To shut off engine touch the small from coil bare end of wire to a ground
Engine will not charge the batt like this but it will run for test purposes, (may not idle perfectly unless exhaust and air filter are on it)
magnets don't go bad do they?
no. but rust film will affect strength of magnets and spark