Ignition coil

[Richard]

HI, I have a old 1991 kawasaki mule 540-c , 2010, and I need a ignition coil for it . the part number is 21121-1187. Unfortunitly Kawasaki discontinued the part. I have been searching for weeks to try and find the part but I have had no luck. I have seen posts that John Deere used this motor in their gator or mower ? But have not been able to cross reference the part # and I am not sure if that is even true. Does anyone know where I can get a new or used coil or have this one rebuilt or the john deere part or engine #. Thanks for the help

[Brennan11]

There are a number of on-the-car, shadetree tests for your ignition coil, but to definitively determine whether your coil is on the way out, the only proper coil test is with a multimeter. Why? Here's the rundown:

Inside an ignition coil are two coils of wire on top of each other. These coils are called windings. One winding is called the primary winding, the other is the secondary. The primary winding gets the juice together to make a spark and the secondary sends it out the door to the distributor. Either one of these windings can go bad and cause your ignition coil to fail.

Sometimes an ignition coil is bad, clearly bad, as in it makes no spark at all. But if a coil is on the way out, but not dead yet, it can make a weak spark that can cause the car to run rough or wrong. By testing an ignition coil with a multimeter while it's disconnected, you'll be using data and numbers to determine the health of the coil rather than your eyeballs and dead reckoning.

We'll show you how to test both the primary and secondary ignition coil windings using a multimeter.