stihl 020av ignition

[Lightning Performance]

This is crazy! I modified a 029 coil to fit and it also lights the Sihl Zat 4 tester up like a Christmas Tree then when I put the plug in and ground it? O fire through the plug? What gives fellows? Flywheel?

Scratch your head again...
What is the magnet spacing compared to the 029 wheel?

 

[Lightning Performance]

I have a ROTARY brand Nova module if you want to eliminate the points.
NIB
Pay shipping, it's yours

No luck with them. My 048 ate two in a month. Went back to points. Saw was kinda week up top with the old condenser.When it comes out again it's getting a coil and flywheel update if needed.

I like where Keith is going, late model parts ftw.

 

[Keith Gandy]

Not sure on the spacing between the poles but Ill look

 

[Keith Gandy]

Both original coil and my modified electronic coil are both 36mm pole to pole between centers

 

[Barneyrb]

Bad plug?

 

[Keith Gandy]

Bad plug?

Tried probably 5 different plugs, 3 new ones

 

[Lightning Performance]

Are tghe wheel magnets thesame?spaceing

 

[Keith Gandy]

Hadnt checked that

 

[Keith Gandy]

Well obviously somethings wrong with my Zat4 spark tester as I tried another tester and no spark. I insalled this coil kit and presto!! Fire!!! Poured alil fuel in cylinder and she popped off! ! Now to order alota parts to finish this old girl

 

[Keith Gandy]

I figured putting the electronical coil kit underneath the flywheel would keep it cooler?

 

[T.Roller]

View attachment 60146 Well obviously somethings wrong with my Zat4 spark tester as I tried another tester and no spark. I insalled this coil kit and presto!! Fire!!! Poured alil fuel in cylinder and she popped off! ! Now to order alota parts to finish this old girl

I'd get rid of that wire nut under there if you weren't already and butt splice it

 

[Al Smith]

No luck with them. My 048 ate two in a month. Went back to points. .

If you had an 048 Stihl with points it was a very early model .That most likely was a Bosc system if it came with points or a solid state trigger unit .

 

[Al Smith]

You know it's one thing to know how a points system works,which I do .it's however another thing to explain it .This should clear things up http://www.foxvalleykart.com/timing1.html

 

[Keith Gandy]

Great information Al! Thanks

 

[Stump Shot]

I run an extra wire from the mounting screw on the module directly to the coil mounting screw(if not mounted to the coil directly), seems this is a point of future failure if ground from case becomes week. Might be overkill, but I figure it beats having the module malfunction and have to replace it. I know it has the ground tab on the unit, I don't claim to understand this or how it works, I just listened to others that had this happen.

 

[Keith Gandy]

I run an extra wire from the mounting screw on the module directly to the coil mounting screw(if not mounted to the coil directly), seems this is a point of future failure if ground from case becomes week. Might be overkill, but I figure it beats having the module malfunction and have to replace it. I know it has the ground tab on the unit, I don't claim to understand this or how it works, I just listened to others that had this happen.

Probably cant see it in the picture but thats what I did.

 

[Stump Shot]

Probably cant see it in the picture but thats what I did.

Well good job then.

 

[Al Smith]

Just a word .Most times on a points ignition the problem will be on the low voltage side of the circuit which is the points,common ground, condenser .Seldom is it on the high voltage side ..

It doesn't take much resistance to render them ineffective .You've got an aluminum alloy saw body,a steel or brass screw and a plated set of points ,brass wire terminal . Dissimilar metals and on an older saw that can mean some galvanic action .

I've already disassembled the whole mess,used some 3m green on the parts with Kopper coat between the mating surfaces ,reassembled and that cured the problem .

 

[Keith Gandy]

Just a word .Most times on a points ignition the problem will be on the low voltage side of the circuit which is the points,common ground, condenser .Seldom is it on the high voltage side ..

It doesn't take much resistance to render them ineffective .You've got an aluminum alloy saw body,a steel or brass screw and a plated set of points ,brass wire terminal . Dissimilar metals and on an older saw that can mean some galvanic action .

I've already disassembled the whole mess,used some 3m green on the parts with Kopper coat between the mating surfaces ,reassembled and that cured the problem .

Al just to be sure Im following so far, when u refer to the high voltage side, that would be from the secondary windings in coil all the way out the the plug gap? Thanks for the help

 

[Al Smith]

yes!