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Lawnmower lost spark, coil is apparently dead (no continuity) Ordered a new 695711 OEM Briggs coil, said it was a replacement for a 802574, but I'm having no luck. Air gap is good. Could it be the magnets on the flywheel? Center one feels strong, outer 2 not as strong.

Thanks (1st post)

Re: Craftsman 6hp 247.881731 Lawnmower new coil, no spark

We have a problem here, the model number you posted is for a snowblower with an MTD engine. Double check what you posted.

Re: Craftsman 6hp 247.881731 Lawnmower new coil, no spark

Double check your model number. that number is coming back to a snowthrower with a MTD engine. It would help us more if we have the model number from the engine itself.

Correct number is 917.388382, thanks.

According to my parts list, you have the wrong coil. Replacement that I find for a 802574 coil, should be a 590454. Someone may tell me I’m wrong, but that is what I find for your Briggs engine 12H802-2675-B1.

According to my parts list, you have the wrong coil. Replacement that I find for a 802574 coil, should be a 590454. Someone may tell me I’m wrong, but that is what I find for your Briggs engine 12H802-2675-B1. Hope they take it back, because most electrical parts are nonreturnable

I get the same results. What happened is last year in the fall I lost spark (I use this machine really only to pick up leaves) I ordered a new coil a 59045/802574. Well it didn't fit when I went to swap it out recently, nor did it look the same. So I started searching again and there are so many listed with the correct numbers that don't look like it. When I found the 695711 listing posting other numbers it listed 802574 as well and it looked just like it. So I figured it would work. It does look the same. But no go. So the only listings I am seeing for 59045/802574 coils that look the same are pricey. This is an old mower I don't want to fork out $30+ more for another one.

Briggs changed coil suppliers a few years back, and the new coils may not look like the old ones. Some even require that the block between the coil mounting studs be ground down to clear the new coil, as well as trim the inside of the blower housing. At least on some of twin cylinder engines.

I am little puzzled why it doesn't work, I've used odd ball coils in the past that didn't even fit that worked, that is why I was thinking magnets.

I also tried flipping the coil over, grounding the coil to the block, filing the top of the posts for good contact.

I took the original coil and sanded off the rust around the mount holes and actually got it to read 5.** on the ohm meter consistently, still nothing. I have never had a problem with magnets, except tecumseh ones that fall off inside the flywheel.

And of course I might have made the wrong decision buying this coil. I see used ones for $15, don't really want to buy one of those either.

ILENGINE said:

Briggs changed coil suppliers a few years back, and the new coils may not look like the old ones. Some even require that the block between the coil mounting studs be ground down to clear the new coil, as well as trim the inside of the blower housing. At least on some of twin cylinder engines.

Click to expand...

On today’s engines coils are very sensitive. Hall affect coils are just to different than the simple ones of the past. You must have the correct arc on the legs, so you can set the proper air gap. Size of legs and the distance apart will affect spark. The position and location of the pickup must match. The days of swapping coils is long gone.

How long ago are we talking? This mower is about 27 years old? And indeed was talking about even older engines (60's and 70's)

CDI or Hall effects coils started coming out in the mid 70’s and a variety of different sizes and looks. The coils which were used with points and condensers were almost completing gone by the early 80’s. You can still get these coils but they will only work on the specific engine there were designed for.

Good to know, thanks Rivets