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Now that the DSAI ignition system revived my old mower, I actually cleaned the old mower up a bit.

DSAI unit finally arrived today. Back in the saddle..... Without this LawnWorld forum, I'd be up the creek. Youtube video of my installation here...

Yep, I appreciate mankii's post about the DSAI unit available at "totalwireframe.com" for a cheap $66, but something seems fishy about that website. Even mankii pointed out that "totalwireframe.com" claims to have 250 units available. It just seems kinda crazy that they would have 250 units...

That is the lowest price I've seen for sure, but I already ordered the $163 Kohler DSAI from amazon. It's taking forever to get here. Tracking says it will arrive by Monday, May 6. I'll post the result of installing the DSAI on this forum.

I ordered the $163 Kohler DSAI from amazon. It's not an amazon prime product, so it may take a week to get here, but it is returnable within 30 days if it doesn't fix it. If this doesn't do it, I might give up or I guess I could search to see if the relays are still available somewhere. I know I...

More confusion. I look on amazon at the Stens 055-776 DSAI Kit, which it does say "Replaces OEM Numbers: Kohler: 12 707 01-S", but it shows compatibility with no mention of my CV16S-43527... It shows compatibility as this.... Compatible With/Replacement For: Kohler CH16-45509; CH16S-45509...

Interesting... appreciate that info.

Now things are getting more complicated. The mower is a 16.5 HP.... The plate on my engine says CV16S-43527. Sears Parts doesn't even acknowledge such a model. They do acknowledge CV16.5S-43527. So what do I have, a CV16S-43527 or a CV16.5S-43527? The DSAI kit is available for the CV16.5S-43527.

I may end up trying to convert to the DSAI ignition, but I'm going to look at Sears Parts and see if they still have the DSAM unit available. But I can't read one of the numbers on the old DSAM. It looks like 9921REVA

My next thing to try I think is to get new relays. I'm trying not to just give up on this mower, but it ran like a brand new one up till now.

I tried your suggestion. The voltage is there with ignition on and cranking. No spark at plug with white wire disconnected. I got a feeling this is going to take a while to figure out. Also, here's those 3 relays.

I threw a new alternator in the car Friday, so now I can start looking closer at my mower, using the info you all have provided. Or I can go to Home Depot and buy a Murray MT 100 42 in. 13.5 HP for $1700, which isn't in my budget at all. Everything on my Craftsman works so good, I just got to...

To add to my fun, my alternator in my car went out this morning. So now, I'm trying to deal with 2 things at once. Plus, it's raining and cold and dark here. Anyway, here's some pics of my mower. It needs a washing, but it's just too nice a mower to give up on. I put on new belts and tires and...

I'll look for the spec today. Does that safety kill switch under the seat ever go bad? I'm going to take a look at that safety switch today. And ILENGINE, can you tell me more about the 12 707 01-S DSAI conversion? Where is that kit available at?

My riding lawn mower is an older Craftsman, model 917.271131. Motor is a Kohler model CV16S. It's always run good till recently. The starter turns the motor, but there is no spark at the plug. (I held the plug against the block and turned the starter to look for a spark). I've looked and looked...