Kawasaki ignition coil problem!

[Cam]

Hey all, i have a kawasaki KF34, Serial : 106343

(stationary engine around 130-140cc) 3 - 4 hp.

http://www.youtube.com/watch?v=4CiiY9nSGoY

Not my vid! just coincidence..

It has a broken coil and i need spark.

I was planning on using a car coil, and wiring it up to the points under the flywheel, heres how id do it.

Wire going from neg terminal on battery to ground on engine.

Wire going from positive terminal on battery going through switch to the positive terminal on coil.

Wire from points (originally destined for original coil) goes to negative on battery.

Wire going from top of coil (output) to sparkplug.

Now that actually works, see this vid -

http://www.youtube.com/watch?v=kIWjeu_IygY

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My problem, the kawasakis points work the opposite way to a briggs set of points.

They are always touching untill a cam lobe comes round and separates them, do i need to wire it backwards, has anyone worked on ignition systems like this?

Some one help!

Really appreciate it!

 

[robbie]

Aren't all points like that? That's why they are called breaker points, because the cam breaks the connection.

Theoretically, it doesn't matter which way you wire your coil because a coil is just a long piece of wire with two ends. The only thing you have to be concerned about is if the primary and secondary in your coil have a common ground on one end of both windings.

 

[Cam]

Thanks for that!, ill just wire it up the same.

Um yeah the Briggs and stratton points are always open, and connect to complete a circuit.

Thanks for that man, ill wire it up tomorrow.

 

[robbie]

OK, I haven't looked at B&S points since I was a kid.

The way breaker points work is by breaking the current, which causes the magnetic field to collapse, which induces a current in the secondary in your car coil, which causes a spark.

If B&S points connect momentarily, it should have the same effect in your car coil. A current is induced in the secondary when the magnetic field in the primary changes, either by collapsing or expanding. Put it together and see if it works. I don't see why it wouldn't.

 

[Kenny_McCormic]

Thanks for that!, ill just wire it up the same.

Um yeah the Briggs and stratton points are always open, and connect to complete a circuit.

Then a split second later, they open, and this causes the spark.