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post #31 of 45 Old 07-16-2017, 07:29 PM Thread Starter
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Re: Kohler Command help needed

I need to call Taryl fixes all-there's your dinner
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post #32 of 45 Old 07-16-2017, 07:34 PM
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Re: Kohler Command help needed

Didja try taking the hood off and setting it on the grass when it starts to act up?

Adding choke to a hot engine and getting good results indicates a lack of fuel.

Try touching the fuel line that comes out from under the shroud. If you feel bubbling, I suggest adding cool air to let the fuel flow as liquid. Choose your method.
tom

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post #33 of 45 Old 07-16-2017, 08:19 PM Thread Starter
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Re: Kohler Command help needed

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Originally Posted by tomw0 View Post
Didja try taking the hood off and setting it on the grass when it starts to act up?

Adding choke to a hot engine and getting good results indicates a lack of fuel.

Try touching the fuel line that comes out from under the shroud. If you feel bubbling, I suggest adding cool air to let the fuel flow as liquid. Choose your method.
tom
Can you actually feel the bubbling thru the new rubber fuel line? It has the foam heat shield around the fuel line coming up into the engine bay; maybe I need more of that also it's pretty cheap. I raised the hood & took the 2 side panels off but by then I was just too hot & tired to deal with it, the real feel yesterday was 102 ̊ @ 87% humidity & my blood thinners/heart meds were taking their toll. The next time I mow I will strip it down before starting and try that. Make it look "hot" pun intended-lol. It just started this year after 14 yrs. and never had this issue before. thanks for responding, Rudy.
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post #34 of 45 Old 07-16-2017, 09:21 PM
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Re: Kohler Command help needed

Hey Rudy.... This would go along with the "fuel line overheating" idea but from a different angle. Earlier the carb solenoid was mentioned and I said something about the muffler explosions on these things without that solenoid working. If this has happened to you at least once in the passed 14 years the muffler could have separated on the left side. (moderately common issue) This heats up the left side frame rail which is the side the fuel line is on. Fuel line can get superheated from this.

Another tell tale sign of the muffler being separated is the paint burns off the left side front frame rail and it then surface rusts. To actually see the muffler split it needs to be removed and the heatshield taken off... But if you've got that surface rust it's a dead giveaway.


.

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post #35 of 45 Old 07-16-2017, 11:34 PM Thread Starter
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Re: Kohler Command help needed

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Originally Posted by Greybeard09 View Post
Hey Rudy.... This would go along with the "fuel line overheating" idea but from a different angle. Earlier the carb solenoid was mentioned and I said something about the muffler explosions on these things without that solenoid working. If this has happened to you at least once in the passed 14 years the muffler could have separated on the left side. (moderately common issue) This heats up the left side frame rail which is the side the fuel line is on. Fuel line can get superheated from this.

Another tell tale sign of the muffler being separated is the paint burns off the left side front frame rail and it then surface rusts. To actually see the muffler split it needs to be removed and the heatshield taken off... But if you've got that surface rust it's a dead giveaway.


.
Thanks Greybeard, that has not occurred to me but I will look at it in the morning for sure. I'm sure after 14 yrs. the muffler will be a pitb to remove but well worth looking into. Thanks for responding, Rudy.
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post #36 of 45 Old 05-19-2019, 03:35 PM Thread Starter
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Re: Kohler Command help needed

Quote:
Originally Posted by Greybeard09 View Post
Hey Rudy.... This would go along with the "fuel line overheating" idea but from a different angle. Earlier the carb solenoid was mentioned and I said something about the muffler explosions on these things without that solenoid working. If this has happened to you at least once in the passed 14 years the muffler could have separated on the left side. (moderately common issue) This heats up the left side frame rail which is the side the fuel line is on. Fuel line can get superheated from this.

Another tell tale sign of the muffler being separated is the paint burns off the left side front frame rail and it then surface rusts. To actually see the muffler split it needs to be removed and the heatshield taken off... But if you've got that surface rust it's a dead giveaway.
.
This is a follow up and Greybeard you were 100% correct. I had looked when first started this project and didn't really see any tell tale signs; ffwd to yesterday when I pulled the homemade canopy off the painted front left side support arm that mounts along the frame was black, no rust just black. This morning I decided to go for broke and take the muffler off knowing the 2 outside attachment studs that were left would probably wring off like the center one did the last time I fiddled with the muffler and quit. This time I sprayed Seafoam Deep Creep on the nuts and let it sit for about 20 minutes while the hood was removed then low and behold both nuts came off without a hitch, wooo hooo.

I removed the muffler, proceeded to tear it down and when it was turned on the left side it was obvious looking thru the heat shield the muffler halves were blown apart from the crimp. The header going into the muffler was stuck tighter than whodathoughtit so sprayed more SDC in it, let it set then wiggled it out of the muffler. Drilled off the heat shield pop rivet heads, carefully pried the front half of muffler crimp up along the entire edge so the back half could be hammered back down into place, tapped the edges together then carefully re-crimped it with vice grip pliers.

The header pipe was sanded with 60 grit paper then sprayed with a little SDC and inserted into the muffler. The muffler was reattached but while at it replaced the blown exhaust gasket then fired it up. It was so much quieter than it has been for sure. The SDC smoked while burning off but maker states it's non flammable so all was good.

I'll tell you what guys the Seafoam Deep Creep has made a true believer out of me, and no I don't work for them either..lol.
I don't know if this has fixed the running issue yet but this fix certainly should help keep the fuel line on that side of the frame cooler to help avoid vapor lock.
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post #37 of 45 Old 05-19-2019, 04:30 PM
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Re: Kohler Command help needed

After two hours, I would eliminate coil issues, filter issues, collapsing fuel line issues and carb issues...you need a break after 2 hrs anyway LOL....
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post #38 of 45 Old 05-19-2019, 09:19 PM
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Re: Kohler Command help needed

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Originally Posted by rudedawg View Post
This is a follow up and Greybeard you were 100% correct.
Good to know you got it off and repaired... I hope it holds.

Late 50's Bready... aka, "The WoodRat"

1969 John Deere 110 w/front blade

1998-99 MTD/AYP "Black Thing" 18hp Briggs MUTT-Mower

2002 Cub Cadet 2166 (in process)

2006 Cub Cadet GT2544

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post #39 of 45 Old 05-19-2019, 09:53 PM Thread Starter
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Re: Kohler Command help needed

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Good to know you got it off and repaired... I hope it holds.
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post #40 of 45 Old 05-20-2019, 09:22 AM Thread Starter
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Re: Kohler Command help needed

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After two hours, I would eliminate coil issues, filter issues, collapsing fuel line issues and carb issues...you need a break after 2 hrs anyway LOL....
Fuel line replacement, tank cleaning, filters, fuel cap, carb have all been addressed and now the muffler repair. The muffler issue was missed because of it being encapsulated in the heat shield. I still have an hour or so of mowing left when the yard dries out from yesterday's rain and am anxious to see if vapor lock resulting from the separated muffler halves was a contributing factor.

This engine is 16+ yrs. old w/ 805 hrs. on the clock and even though it has been meticulously maintained there are still a couple of things to be checked. The head gasket is suspect of needing replacement and there is a slight oil leak on the pto side crank seal. When the new tractor is delivered they are to take this one back to the shop and give the engine a thorough going over.
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post #41 of 45 Old 05-20-2019, 11:06 AM
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Re: Kohler Command help needed

The Command is the best ever vertical shaft engine ever made IMHO......Nothing made today compares with their quality and reliability
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post #42 of 45 Old 05-20-2019, 11:25 AM Thread Starter
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Re: Kohler Command help needed

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The Command is the best ever vertical shaft engine ever made IMHO......Nothing made today compares with their quality and reliability
Mine is a Command 16 h.p. single cyl. horizontal CH16S and has been a good one so far, with the exception of the current issue. The downside Kohler retired it years ago so parts are limited/expensive and there is no ready to plug-n-play replacement engine or short block available when it goes down.
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post #43 of 45 Old 05-21-2019, 09:53 PM Thread Starter
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Re: Kohler Command help needed

Update: Got home this afternoon from wife's morning doctor visit and decided to mow a little to see if fixing the muffler helped. I put the canopy back on and mowed for almost 2 hrs. without a single hiccup or spit & sputter.
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post #44 of 45 Old 05-21-2019, 10:59 PM
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Re: Kohler Command help needed

Sounds good... (pun intended)

Late 50's Bready... aka, "The WoodRat"

1969 John Deere 110 w/front blade

1998-99 MTD/AYP "Black Thing" 18hp Briggs MUTT-Mower

2002 Cub Cadet 2166 (in process)

2006 Cub Cadet GT2544

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post #45 of 45 Old 05-22-2019, 05:09 AM Thread Starter
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Re: Kohler Command help needed

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