No spark on a Wisconsin Robin

[m610]

Thanks. I'll reset the gap. I could probably get the rust off while I'm at it.

 

[Johner]

I'm not surprised that Wisconsin motors are not listed here.

Anyway, I've got one, WI-185, and it is on a friend's post-hole digger, the earth drill type. It has not been run in years, so I cleaned it up, replaced the rust parts, repaired the fuel cutoff, cleaned the strainer, got it a new carburetor, etc., and now I am ready to fire it up. After more than a few pulls on the crank cable, I pulled the spark plug, and, still connected, I grounded it, and pulled again. No spark. Then I got my spark tester, or whatever it is called, and hooked it up, grounded it, and pulled. I get a strong yellow spark in its window. So now I plug the spark plug into it, ground it, pull, no spark and no light. I try again with a new spark plug, same result. No light and no spark. The best I can figure is I am getting current, just not a high enough voltage to fire a spark plug.

So now what should be my next step?

How do these things generate the power for the spark plug anyway?

Thanks in advance,
Mike

The wire in the spark plug cap is most likely rusty.

 

[upupandaway]

I did try another plug. No go.

I found some coils online: used - $20, new and never used - $300+

I wonder if I can recharge the magnet.

Mike

I would still try a new coil. They aren't THAT much...

Robin Subaru EY20 EY Ignition Coil 5HP ENGINE MOTOR GENERATOR LAWN MOWER M CO20 | eBay

Fits Fuji Robin engine model EY15, EY152B, EY15-3, EY153D, EY20, EY200B, EY153D00000, EY153D00020, EY153D00220, EY153D00280, EY153D00290, EY153D00340, EY150BB0020, EY150BB0030, EY150DK1600, EY150DK3031, EY150DK3640, and EY150DK3710.

www.ebay.com

 

[m610]

Thanks. I ordered one.

The gap on my current setup is 0.022".

 

[StarTech]

And reduce the gap to the thickness of a repair tag or a standard business card for the coil to flywheel clearance. Affects ignition timing.

0.010" - 0.012"

 

[m610]

Will do. I have feeler gauges I can use for this.

 

[upupandaway]

Will do. I have feeler gauges I can use for this.

I just use the politician ads\home depot 10% off promo\etc...


Being it is election time in Tx, i get a pile each day in my mail. Don't know about where you live...

 

[slomo]

I'm not surprised that Wisconsin motors are not listed here

Great engines back in the day. They are long gone with basically no parts left.

 

[sgkent]

Will do. I have feeler gauges I can use for this.

brass or plastic ones are needed to properly set the air gap. That is why some people mic a business card, and when they find one about the correct thickness that use that - non-magnetic. Regular feeler gauges are magnetic. Brass and plastic ones are not.

 

[m610]

I had to modify the coil. The off/on (?) connector was on the wrong side and was in the way when bolting it on. I hope to finish this today.