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Garden Tractors Discussion Forum

Timing on a K-series Kohler

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atlarge54

01-02-2012 08:48:19
75.105.128.36



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I had a small debate about timing a K series on a different forum. Some people claimed it was extremely important to vary timing by adjusting point gap. I've always just gapped the points and run 'em. Yesterday I removed the point cover and was checking things out and it appeared to me there's just not a lot of timing variation possible. Those who argued that it was critical to time using point gap couldn't provide an answer when asked about how much timing is actually available.

How much can you actually vary the timing using point gap?

How many of you actually mess with timing or do you just set the gap at .020" and run?

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wisbaker

01-03-2012 11:26:11
207.118.190.91



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 Re: Timing on a K-series Kohler in reply to atlarge54, 01-02-2012 08:48:19  
I was at a Golf course I rolled the engines over to the mark on the fly wheel and then painted a mark on the screen and fan housing and would time off that, I could probably move it 5-10 degrees, never really tried to see how far I could move it, just wanted the lines to match up, at service time I would put the light on it and check timing, most of the time it was right and I didn't have to mess with the points at the lessor services (25 & 50 hour)

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gab

01-02-2012 18:04:58
50.103.35.31



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 Re: Timing on a K-series Kohler in reply to atlarge54, 01-02-2012 08:48:19  
I use a light and just think the engine runs and starts better. Set your points at .020 and hang a light on it and see how close you are to the mark on the flywheel.



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Eric in IL

01-02-2012 17:51:50
208.124.70.178



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 Re: Timing on a K-series Kohler in reply to atlarge54, 01-02-2012 08:48:19  
I think that 3 thousandths of difference in point gap yields ABOUT 10 degrees difference in dwell angle.

I am sure 10 degrees difference in dwell angle produces a 20 degree difference in timing. This is due to the crank revolving twice the rate of the cam.

I have a K181 on a Troy-Built tiller. I time it with a light and when it is right, the points are tighter than the book specs. I can USUALLY start it with one rope pull if I am able to finesse the choke correctly with the other hand.

The numbers I stated above may be off somewhat, but I think they are very close. If you get a light you will have plenty of adjustment room at the points to get it timed correctly.

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MNGB

01-02-2012 16:18:08
67.230.224.233



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 Re: Timing on a K-series Kohler in reply to joe csuti, 01-02-2012 08:48:19  
Quoting Removed, click Modern View to see

There is a special tool that screws into the Tecumseh spark plug hole for timing them so its possible to do with out removing the head.

GB in MN



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joe csuti

01-02-2012 13:43:22
151.198.127.202



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 Re: Timing on a K-series Kohler in reply to atlarge54, 01-02-2012 08:48:19  
Best thing to do is goto link below & download service manual for K series eng.

On pgs 8.2-8.3 it will tell you how to do a static time or lite method,you might have to pull flywheel cover to see timing marks when doing a static time,actual point gap may go between .018"-.022" when eng correctly timed.Haveing eng correctly timed reduces hard starting & eng missing/overheating when running.

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oldtanker

01-02-2012 10:24:08
66.228.255.223



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 Re: Timing on a K-series Kohler in reply to atlarge54, 01-02-2012 08:48:19  
It's easy to put a light on em and time em. Thats what I do.

Rick



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atlarge54

01-02-2012 11:01:42
75.105.64.39



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 Re: Timing on a K-series Kohler in reply to oldtanker, 01-02-2012 10:24:08  
If I owned one I would.

Do you start with the points at .020"?

Approx. how much can you vary the timing with the points? It just seems like there's not a lot of adjustment available.



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wisbaker

01-02-2012 09:11:26
174.124.141.94



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 Re: Timing on a K-series Kohler in reply to atlarge54, 01-02-2012 08:48:19  
I've done it both ways. I didn't think it was that big of an issue to time them, my mentor at the time convinced me to start timing them with a light. 30 years later I'm messing around with a Tecumseh snow king boy I wish I could put a light on that sucker and time it like a Kohler, it seems to want to pop through the carb indicating maybe the point gap is a little fat.



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atlarge54

01-02-2012 11:07:52
75.105.64.39



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 Re: Timing on a K-series Kohler in reply to wisbaker, 01-02-2012 09:11:26  
Yep not too fond of Tecumseh, I was quite surprised to find it required pulling the head to set the timing. Unlike the Kohler the Tecumseh points were on an adjustable plate.

So when you use a light is there much timng adjustment? Hard for me to imagine much more than +- a degree or so.



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