Coil Replcement On JD/Kohler 12.5s Oldie - Tractors & Mowers - Page 2 - DIY Chatroom Home Improvement Forum
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Old 04-10-2015, 11:19 AM   #16
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You can buy two D105 JD Mowers for the price of one X300. Same cutting width.
https://www.deere.com/en_US/products...105/d105.page?

Obviously the D105 is not the same mower as the X300, but it's not the same price.
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Old 04-10-2015, 11:57 AM   #17
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Quote:
Originally Posted by JD367 View Post
Why do you need a puller to replace the coil? I owned/operated a small engine shop for 15 years,and never had to use a puller to do this.
What model engine is it? Is it a horizontal,or vertical shaft ?
Model #s for vertical shaft wil be :CV23,etc.
Model#s for horizontal shaft,will be: K-301s,or CH125,etc.
On the phone with my buddy, he says: In his experience the coil and points are both under the flywheel. We can pull cowlings and check for rubbed wire easy enough, but will need to get under flywheel if that is not the problem.

He was hoping we could get a link to a diagram for an engine similar to this one.
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Old 04-10-2015, 05:34 PM   #18
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Before any help can be offered you will need to supply model and serial # from engine. It is located on blower housing.
Ignition coils are still being offered for sale for some 12.5 HP Kohler engines. Price is close to $70. They feature "no points".
If it was a good mower and the only problem is no spark, then the best $$ scenario is to repair what you have. A new coil can be installed in about two hours. I do them faster (experienced).
I repair lawn mowers as an old man's business. Can help you if you are willing to be helped.

RR
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Old 04-10-2015, 05:34 PM   #19
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Try this one : Just click on ignition/electrical.

http://www.partstree.com/parts/kohle...-deere-12-5hp/
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Old 04-10-2015, 06:36 PM   #20
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Quote:
Originally Posted by Rough Rooster View Post
Before any help can be offered you will need to supply model and serial # from engine. It is located on blower housing.
Ignition coils are still being offered for sale for some 12.5 HP Kohler engines. Price is close to $70. They feature "no points".
If it was a good mower and the only problem is no spark, then the best $$ scenario is to repair what you have. A new coil can be installed in about two hours. I do them faster (experienced).
I repair lawn mowers as an old man's business. Can help you if you are willing to be helped.

RR
Thank you! Found quite a few for the 12.5S #1258404 Kohler coil on Amazon and Ebay even slighly cheaper. Around 40 bucks..dealer had it for 60.
I forwarded the link to the schematics to my friend so maybe he can parse it out. Maybe you know about the flywheel issue, Mr. Rooster?
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Old 04-10-2015, 08:13 PM   #21
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In all my years working on small engines, I have never found points under flywheel on a Kohler. Other brands -- yes, Kohler -- no.
The ignition coil for most older model Kohler is under flywheel.

Kohler placed points outside engine block. They now use the point free coil (mounted outside flywheel) as do many others. Sure saves a lot of hassle.

Hope this helps.

RR
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Old 04-10-2015, 08:22 PM   #22
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Looks like my friend will at least be able to check the points if they are not under the flywheel.

I don't guess the new improved coil would retrofit to an older model? Not mechanically inclined, so hope your not rolling your eyes or worse at that question.
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Old 04-10-2015, 09:54 PM   #23
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There aren't any points on that engine!!!
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Old 04-11-2015, 07:45 AM   #24
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Quote:
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There aren't any points on that engine!!!
So no chance the points are bad...sounds like it would have to be a bad coil then, right Watson?
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Old 04-11-2015, 08:30 AM   #25
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Not so fast! Many reasons to not have spark. One is bad coil, but others are the myriad of safety switches that will short out the coil. To properly check you need to disconnect the magneto kill wire (usually black) from small spade connector on coil and then test for spark.
If this test shows spark then the problem is elsewhere.

I am in the process of repairing a Simplicity with a bad PTO switch that not only shorts out coil, but opens circuit to starter along with controlling PTO. (switch is "in transit", be here Tuesday)

Supply the Model and Serial #'s from motor for definite answers to your questions. Without those #'s all answers are generic shots in the dark.
Until you present those requested #'s I will refrain from attempting to post any more answers.

RR
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Old 04-11-2015, 09:04 AM   #26
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Rough Rooster,it's already been determined that the engine is Kohler CV12.5s-1215 .
The switch you're referring to is known as a RIO...Reverse Ignition Over ride.
But you should read ALL the posts on this thread,before advising on the switches,since neither the poster, nor his mechanic, seem to know much about small engine repairs.
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Old 04-11-2015, 09:23 AM   #27
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Yeah, I thought I'd provided all the numbers needed. My mechanic and I both not retired, work extra Springtime related jobs. He wanted me to find diagrams, which I think you provided, which should determine coil placement and other issues. He just hasn't had time to review this, which I hope he can open as i forward these to him. Thank you so much for all your help. Please don't give up on us, because 3K is not in my budget if this little guy can be fixed. Thanx!
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Old 04-11-2015, 09:33 AM   #28
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Quote:
Rough Rooster,it's already been determined that the engine is Kohler CV12.5s-1215 .
The switch you're referring to is known as a RIO...Reverse Ignition Over ride.
But you should read ALL the posts on this thread,before advising on the switches,since neither the poster, nor his mechanic, seem to know much about small engine repairs.
Hasta la vista!
Attempt to help and get called out. I will get out of the way and allow you and your "superior" expertise to prevail.

RR
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Old 04-11-2015, 09:39 AM   #29
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In the crossfire between doctors, the patient is shot. But like I said, I appreciate all sincere help here. Egos are not our Amigos...
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Old 04-11-2015, 09:44 AM   #30
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Not giving up,my friend.
Just didn't want too much technical info to confuse things.
RR, no Kohler I've ever seen( I'm 63 yrs old) had the ignition coil under the flywheel.
The STATOR coils, yes,but these are for charging and lighting,not ignition.
Older Kohler engines used an auto motive type ignition coil that mounted in a bracket on the side of the engine. 12v dc went to the - terminal of the coil,and a wire from the + terminal ran to the points.
If I've offended you,RR, it was not my intent,but I owned,and operated an outdoor power equipment repair shop, for over 15 yrs,and was gas/diesel repairman for many years before that .

Last edited by JD367; 04-11-2015 at 09:49 AM.
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