I have a cat 22 Ive purchased a year ago, Havent really been able to get it to run great, Ive made new plug wires for it as mine were beyound bare. I just need some help easing my mind on where the plug wires in the mag go to the spark plug. Just to make sure there in the correct spot.  Thank you. 

You need to get a copy of "Operator's Instruction Book for CATERPILLAR 22 Tractor". eBay ect. Here is the page you are looking for. Also since the tractor is new to you, the timing of the mag needs to be set as the mag rotor could be in the wrong position.  Enjoy your CAT 22 as they are still a very usable and reliable machine. Bill

oldcroak.com/cm-4-caterpillar-magneto-service-parts-manual/

oldcroak.com/ct-4-caterpillar-magneto-service-parts-manual/

Thank you guys for the help got my wires in place now! Seem to have no spark now after sitting for 6 months, Gave my points a quick cleaning and didnt seem to do anything. Im new to mags any ideas?

noahthompson wrote:

Thank you guys for the help got my wires in place now! Seem to have no spark now after sitting for 6 months, Gave my points a quick cleaning and didnt seem to do anything. Im new to mags any ideas?

Mags are super easy once you get to know them. Old coils and condensers can be fickle ... clean all the canections ... First smell the coil and condincer if they smells of burnt electrical parts best start looking... Check the coil resistance across the primary and secondary windings and the condincer can be checked easy as well. Points are clean working and the points cam felt is lubed should work fire.
Start with the condencer easy and cheap

Hi Team,
these may help too, as well as the old croak magneto manual above.
See how you go and keep asking giving us details of what you find, tried.
Cheers,
Eddie B.

www.angelfire.com/home/cat22/book/manual.html

remember the spark returns to the magneto via the engine casting its important that the mag mating faces are clean to give good spark.
if you have mag problems the first things to change are the plugs and the condenser.

yes magnetos can lose magnetism over time rotary mags not so much but tripper types especially if the shoe isnt closed.
moisture is the enemy any machine that is going to sit needs to be moisture protected.

points can be funny to set make sure they are set correctly
impulse drive mags can be hard to bench test by flicking them over. as they often need to rotate above certain speed to work.
if you have it off the machine you should feel a resistance to rotating the drive of the mag by hand this is the magnetic field weak magnets can cuase weak spark. which is hard to measure the exact magnetic strength.

i dont stuff around with them much i just get them sent away to be rebuilt.