Flywheel gap???

[dynodave]

When you say Phelon do you mean they share the dreaded blue coil from Homelite? Or are those more reliable?

all the data in the post above is the maker of the flywheel.
I have a half dozen EI on my desk that are from a variety of saws. Almost every one is phelon many are of poulan origin,
It is very likely the module could be demanufactured off the small diameter core and put on the larger diameter core for the homelite saw.
Any of these EI that mount on the same leg (leading or lagging) of the module core AND have the same magnetic pole sequence on the flywheel would likely work.
This I proved to my self by rotating the flywheel backwards and got NO spark from the EI that worked very well in the forward direction. Polarity sequence seems to mater...Semiconductor electronics polarity in other areas of industry seems to matter, so why not here too?

 

[svk]

all the data in the post above is the maker of the flywheel.
I have a half dozen EI on my desk that are from a variety of saws. Almost every one is phelon many are of poulan origin,
It is very likely the module could be demanufactured off the small diameter core and put on the larger diameter core for the homelite saw.
Any of these EI that mount on the same leg (leading or lagging) of the module core AND have the same magnetic pole sequence on the flywheel would likely work.
This I proved to my self by rotating the flywheel backwards and got NO spark from the EI that worked very well in the forward direction. Polarity sequence seems to mater...Semiconductor electronics polarity in other areas of industry seems to matter, so why not here too?

Cool, thanks. When I googled it, even the used coils are black...so not the coil of death lol.

 

[TheTone]

Ok let me start off saying that this is a very serious actual ?? I have scouted the internet and there are 1000 articles posts in forums etc..about how to set the gap...and there will be no spark or very unreliable spark if the gap is too wide...not one place can i find anyone specifically say exactly what happens if the gap is too small or skimming the coil...I'm just trying to learn here...what happens to the saw if it's ran this way for an extended period of time?? Would you guys run a saw that the two were contacting..thanks for any insights

It's possible that this one may have been set just a hair too tight.

 

[s sidewall]

How you get that idea, could be worn out crank bearing. [emoji28]
It don't need the whole flywheel to make spark.

Steve

 

[TheTone]

How you get that idea, could be worn out crank bearing. [emoji28]
It don't need the whole flywheel to make spark. Steve

I'll check that...along with the muffler bearings!

 

[s sidewall]

Those are notorious for going out, start out rattling then start knocking real bad.

Steve

 

[SEAM]

2-3 layers of regular copy paper work for me every time.
Scratches on the flywheel mean that something's rather loose - usually not the coil

 

[dynodave]

2-3 layers of regular copy paper work for me every time.
Scratches on the flywheel mean that something's rather loose - usually not the coil

learning moment for me also...
On my first poulan 3400, I put used 3800 top end to replace the old burned 3400 p/c. positioned the coil with a business card and moved the magnet off the module to get the card out. Go to pull the cord and could tell the rubbing/grinding??? Did I screw up and not tighten it enough? Repeat...same results.
Well I learned the stiff seals mask bad main bearings which are caged needles on 3400/3700/3800. New bearings and seals so more dragging flywheel. Probably the bad crank/seals is what killed the 3400P/C

 

[s sidewall]

Those bad cranks seals will defiantly kill a top end. Replaced my seals on my 3400 when I put a 3700 top end on, bearings tested good.

Steve

 

[aokpops]

017. is about all the air gap you can get 020. will not spark . Had a bunch of coil problems . They really need to stop selling non resister spark plugs . I had coils go bad with less than a half hour run time .

 

[aokpops]

I had coils that would spark blue and would not run . Junk NR plugs was throwing the coil out of time . There sold everyware and is hard to find a good plug .

 

[Jason Wilcox]

The saw is a stihl 029 super...that's the only part that has the tape or whatever it is...and it's the only place the flywheel has any marks on it