Kohler CV20S CV22S CV25S Ignition Repair Eliminating the External Timing Module

[@michaelm2725]

Thanks for the helpful video, it's much appreciated. I want to do this but I'm worried for some reason it won't work for my CV25S-69534 because of the flywheel. The official Kohler upgrade kit includes the flywheel and two coils - but this is the second video I've seen where the flywheel did not need replaced.

[@Histandard2011]

Michael, the only reason I could think of for replacing the flywheel would be for very MINOR timing issues. I have had no issues with anything in the 3 years I have been running mine without the timing module and the new coils. The timing module retarded the spark slightly for starting and then advanced it slightly for running. I am not an expert, just an old retired small engine mechanic.

[@Histandard2011]

Sounds exactly like my engine. If you watch the video closely it shows the old coils with 2 spade connectors and the new one with only I connector. One of the questions prior to yours the man had trouble finding the same coil as I used but did finally locate them. So, it should work out for you. My old girl is still running fine.

[@Histandard2011]

Yes, the part number is 245-84-01S and I did go to topgearsltd's eBay store and I no longer see them listed. I see quite a few directly from China (I am sure that is where they got them) but the delivery time is end July - mid Aug. I saw a few other listings for them also. Search by your CV22, CVxx and the 245-84-01S part number. I saw some that had a different primary on the listing title but when you looked at their description it also showed it to be the same as the number you are looking for. Hope all this helps---

[@chrisharp8432]

Thank you sir for you're response. I finally did find the right part through topgearsltd. I've been searching Ebay and hadn't seen it. But earlier I came across it. Thanks again!

[@jackconner958]

Adam I think I saw the video where the guy never mentioned the part number. However in the comments I believe he said SV730 may work. Or any newer v twin with one post or only ground. Thanks for sharing your part numbers. These old engines are hard to find parts for. I love your dump buggy, just rebuilt the solenoid on the trim pump in my boat exactly like yours. Show us how you rigged the switch for up down please.

[@thomassheehan74]

dude rocks. just does.

[@edhutchison5439]

Did you reconnect the carb wire to the ignition switch? Thanks

[@Histandard2011]

Yes, that MUST be connected and have power on it in the run position and it provided to power to open the 12V solenoid to allow fuel into the carburetor. If you watch the video closely you should see where I point that out. However, I made the video a few years back and my memory is fading being very close to 80 now. Good luck

[@shawn7913]

Is this repair still working? I have the ch22s that has a miss on one of the cylinders, the coil isn't dead, but it only fires obout every other time best I can tell. I've been looking everywhere for coils and to do away with the control module that you have.

[@Histandard2011]

The conversion is still working just fine. The engine is getting tired but it has over 2,500 hours on it. I think I listed the coils I used in the video. Don't remember for sure. On mine it was the module which has not been available for years. See them on ebay but not sure I would purchase an old pulled electronic part on ebay.

[@chrisharp8432]

Can you tell me if the part number for these coils is 2458401S? The picture you have is a little blurry.

[@leifjarvie5109]

Not definitively, I have M0203121816.™

[@brianpulliam47]

I wish I knew where the white wire was hooked to, is there still diodes in the harness?

[@Histandard2011]

The white wire is the grounding wire from the ignition switch. If you do the coil modification you will have to "Y" off of the one existing wite wire and run the white wire to both new coils. There are NO diodes in the harness.

[@brianpulliam47]

@@Histandard2011 I had a total of 3 dieods in the wiring going to the coils coming from the chassis, I figured it out this morning my I had used the wrong red wire. Thanks for the replying. It's going to be 111 degrees here today. I don't think I'll be mowing today.lol

[@cm1064123]

Adam sir. Do you have a video of your mower power wheelbarrow dump modification?

[@GeneKnapp]

No I do not. I did use a second hand Mercury vintage tilt and trim pump. I purchased a 3" hydraulic ram (power up and power down). The entire dump unit sets on top of the mower deck frame and mounts over the 4 vertical up right posts that the deck heights adjusts on. Most of what I welded up is 2" square tubing. Not a real hard thing to do but you do have to figure out where to mount the ram to get the proper throw to get it to set all the way down and go up to where you want it. If you are truly interested in building one let me know and I will try to get some measurements for you

[@nathanblevins3626]

The green wire coming out of the wiring harness that is with the rest of the wires that are zipped tied to the intake, where is it going to?

[@Histandard2011]

Not all engines depending on year built and etc. are wired exactly the same but i would bet it goes down to the electric fuel shut off solenoid on the float bowl of the carburetor which should have nothing to do with your ignition.

[@TommySmith-x9q]

I have got a Kohler CV25s and i put the new stile coils on and it sounds like it is missing, I have heard two stories about the flywheel does it have to be changed or not. can some give me the answer.

[@Histandard2011]

Sorry to be so long getting back with you, however at 80 I am slow at everything. I did this conversion on 2 units and did NOT change the flywheel. I am sure you have the new coils installed the right side up (Ground terminal up and plug wire facing down). I believe they will mount either way. Second I strongly suggest that you use Briggs and Stratton (I think they are platinum). Now I know Briggs has never manufactured a spark plug but they are branded Briggs and Stratton. Now the product number. The package part # is 696202 and the # on the plug is 694385. The outside package # may be different due to it having 2 plugs per package. These plugs replace RC12YC,RC14YC and Bosch FR8DC. I swear by these plugs and found them to do away with hard starting, misses and etc. Downside is the cost. Sorry to be so long winded.

[@charlesbranham875]

I have a Kohler cv16s it has the external timing box. It's dead. Need a new coil. Not sure what one will work on it thou. Can you help.

[@dronesouth9098]

I would replace both coils with the MDI module conversion kit and get rid of the DSAI. Kohler Part #3270701S. I did mine last week and it was super easy going by the above video.

[@charlesbranham875]

I bought a couple different coils. One matched up fine but it didn't fire right. Had to adjust / slotted it back a few mm. Working great now... Thanks.

[@jackconner958]

Drone the conversion kit you listed is $111.00 this video suggests part# 2458041S which is a single plug coil and is listed for the cv16. They are $34.00 a pair, with the kit you pay $66.00 for a piece of wire 2 butt connectors and a couple zip ties, you could easily make yourself

[@wenfordcampbell501]

I have a kohler cv25 command engine .what kind of mdi modular corversion kit or coils so i can make my on do i need

[@Histandard2011]

Does your engine have the external timing module? Also, do your coils have just one spade terminal connection on them? With that information I may be able to help.

[@wenfordcampbell501]

@@Histandard2011 it is a command cvs5 1997 model .the book says it has a electronic cd ignition. The coil has 2 prongs on it i belive the speed advance has gone out on it

[@Mike-su8si]

@@wenfordcampbell501 those are called spark advance module

[@kevinshea5819]

I am in love with you Adam.

[@wenfordcampbell501]

Thanks ill try it but so far i can't find the coils

[@Histandard2011]

I am sorry but I do not know if the same coil I used will work for you. If it were me and the rest of the machine was in good shape I would take a chance and try it. The last time I saw them on eBay they were $25 for a pair with free shipping. Sorry I could not help more.

[@Mike-su8si]

Amazon has those coils I bought one for mine i don't think it was new it had small rust bits on it and both the prongs were a little dirty from someone else that had the part but it works

[@Mike-su8si]

That's a spark advance module and they cost alot brand new to much for me

[@Histandard2011]

I would say it is NOT your coil. Most often coils go bad, get weak and etc. When they do this they do just the opposite of what you are saying. Meaning with a weak coil they will start better at an idle than they do at high speed. This is due to having to ignite a larger volume of fuel. I would say you have carburetor trouble on the idle side. I have found that the problem lies behind the welch plug on the side of the carburetor that covers 3 very small holes that are the idle passages. Getting the welch plug out without damaging the body of the carburetor is hard but finding a new welch plug to put back in is close to IMPOSSIBLE these days. I suggest a cheap Chinese carburetor off of ebay. I have used quite a few of they in the last few years and they seem to work well.

[@solidsnake6405]

You can find these coils here (ebay item # 153356380528) a bit cheaper,but you will need some 1n4007 diodes to stop them from shorting each other out.

[@leifjarvie5109]

A typical clertris/clertric trick. 🤑🤪😇

[@Histandard2011]

I think this is the same coil I purchased, ebay listing 312748172888 Seller assumes all responsibility for this listing.

[@richardbrady2818]

a lot of info we don't need