how to test 032AV ignition coil for resistance values

[Gatorsby7]

i have a 032AV points/condenser saw with a no spark condition. i want to resistance test the coil, but not 100% sure how to do it correctly and what the range of acceptable values are for primary and secondary? second question is on on/off switch. i'm assuming "off" breaks continuity between wire from points to coil.....is that correct?

 

[pioneerguy600]

The on off switch sends the electrical charge to ground.

 

[Gatorsby7]

ok. thanks for clearing up how the kill switch grounds out the ignition. so the path to ground for the kill switch must be in how it mounts on the metal case.

 

[pioneerguy600]

ok. thanks for clearing up how the kill switch grounds out the ignition. so the path to ground for the kill switch must be in how it mounts on the metal case.

On saws with metal outer cases that are connected somehow to the engine block the switch can self ground, on saws with full AV and those with plastic material covers the switch will have a wire from it to a good ground as plus the wire from the coil , the switch closes and provides a circuit to ground. Some saws like Stihl will have a bit more complicated switch type but its still just a switch that closes contacts in reality. If the wire from the coil happens to get grounded out before reaching the switch then most times the coil will not fire the plug, hence its usually a good suggestion to disconnect the switch and or trace the wire`s path from the coil to the switch when a coil is not producing high voltage spark.

 

[Gatorsby7]

i tested continuity between the end of the wire and the coil and it's good. that's a good a point about it possibly grounding out by touching the case, but the wire looks good so I don't think that is happening. I guess I'm going to have to test the coil if someone can provide instructions and values. thanks for your help.

 

[pioneerguy600]

I know how to do the tests but don`t have the specs here with me, hope others have them handy.

 

[pioneerguy600]

 

[hotshot]

The primary (low voltage side/tiny wire with kill switch) is 0.7 to 1 ohm, and the secondary side (high voltage/plug wire) is 7.7 to 10.3 Kohm, K being x1000 of ohms.

Ground your other test lead to the coils laminated frame.

 

[Gatorsby7]

thanks for the info on testing guys

 

[hotshot]

Good luck with the repair.

A very smooth cutting saw, no vibrations, I just sold one for $250.

 

[HarleyT]

I usually use the Oregon ignition chip. It works great!!

 

[hotshot]

I usually use the Oregon ignition chip. It works great!!

Yep, but you need a good coil!

 

[HarleyT]

I'll bet that the coil is fine.

 

[Gatorsby7]

thanks guys, coil tested in range. going to try conversion module

 

[HarleyT]

Here is the Oregon one. There is room to mount on the coil mount screw.
Works great.

 

[Vintage Engine Repairs]

Stick with points and condenser replace both - keep the saw original!

 

[Vintage Engine Repairs]

Here is the Oregon one. There is room to mount on the coil mount screw.
Works great.

View attachment 865820

Shun this man with his Oregon chip, I don’t blame a Stihl saw if it refuses to spark with Oregon AM parts installed on it!