It seems like it my kohler command 15 hp craftsman, 426cc, riding mower, model:
CV15S, built between 1995-1998, has a bad coil. I already checked and tested the
gas cap with no improvement. I can start it and mow for about 20 to 25 or 30
minutes and then it rapidly peters out.If I let it sit for a half hour or more,
it will run again for about the same amount of time. I've looked into web sites
and one said my Kohler Command has a gravity fuel feed system but mine has a
fuel pump. It is not a Kohler Courage according to the info on the engine. When
it "stalls" for lack of better terminology, it sounds like I have moved the
throttle slowly down to idle and then shut it off. Please help. I'm at a loss.
Should I get a coil, or is there something that I should check with the fuel
pump or carb? Oh and it does smell somewhat hot after it quits.
Would appreciate any help. And thanks.
I doubt this is the problem in your case, but when you mentioned it
smells hot, is the exhaust system ok ? I had a riding mower that a
deflector piece fell off (rusted off) the muffler that would direct the
hot exhaust away from the engine. I think it boiled the gas out of the
On Sat, 12 Aug 2017 19:44:03 +0000, Jules fredrickson wrote:
We have a Ransomes ZTR mower at work with a similar Kholer engine on it
and it was doing the same thing. It would mow perfectly fine for awhile
until it got hot and then would loose power.
We also have a Bobcat skidsteer with a Kholer engine in it. Very similar
in size. It would do the same thing. Run fine for awhile then start to
We tried everything from changing plugs,wires,fuel pumps,changing oil
coolers,cleaning the carbs and retuning them back to factory spec,fuel
pumps. Turns out on both machines it was the coils that were bad. Had
the dealer install new ones and two years later they still run great.
Happens on Kawasaki engines too - had one on a John Deere. The little
blighters are expensive too!!! Then it threw a curve ball at me. The
"ignitor" was bad too. Put in the new coil and it worked for a short
time. Then died. Tried another coil. No joy. Replaced the ignitor
(double ouch!!) and it ran. Tried the original coil, no go. Tried the
first replacement - ran fine.
So both components had failed intermittent - just the kind of
situations I LOVE troubleshooting -NOT!!!
Sorry if some expert on the lists percieves this as inaccurate or
wrong. ( may as well appologize before I get caught in error as after)
I was thinking about the 1970s or so. A lot of irrigation power
units were 390s, 428s or so. Carburetors and point ignition systems.
There might have been some electronic ignition but I don't remember.
Natural gas and propane fueled.
And we had a one ton truck at work with a 390. It was ok for really
short trips until someone spent a few bucks.
On Sat, 12 Aug 2017 19:44:03 GMT, Jules fredrickson
What is your outside temperature like? If it is very hot, are you
using the correct grade of oil for that temperature range?
Also, when is the last time you changed the oil and the filter?
With the engine cold, have you tried washing off the cooling fins and
making sure there is nothing obstructing the airflow to the engine? If
the cooling fins are covered in dust, the heat transfer to the
atmosphere will be greatly inhibited.
Should it turn out to be a bad coil , instead of replacing it with a
spendy Kohler unit try this . Assuming yours is a twin with a single 2
pole coil w/points ignition , try using a Harley coil for a Shovelhead
motor . It also has 2 poles and is designed for points . My KT17 has
developed a miss probably due to worn points , but the Harley coil is
still going strong after 2+ years .
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