Kohler CH 20 Running Super Rich ?
- Thread starter GTSRider
- Start date
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OldMachinist
Platinum Member
Yes it looks like it has a accelerator pump.
Ok...latest up-dates....
yesterday, I installed new crank seal to stop oily mess all over front of engine and mower deck....took like 3 hr.s to do job , and 2 hrs. to clean messy greasy tractor. Engine is bone dry now....but still runs like crap from super rich
mixture.
Today I installed new Keihin carb ,with fuel accelerator pump, and bigger throat from ebay.... (thanks to Old Machinest )
After 10 -15 minutes or so of trying to get engine to run for more than
2- 3 seconds, I gave up in discusst and went to have a beer with my buddy and get his input. He said I got a bad carb off ebay.
Left there, in a state of depression... and went home , and cranked engine...
ran for like 4 seconds with choke on. Kept playing with it , and got it to run for about 5 seconds tops ..... gave up again , and decided to shower up, and call it quits. Picked up any tools , and put them away.
As I was walking away from tractor , I , for some reason, I decided to give it one more try, I forgot that I had thrown a t-shirt over the carb for the night ,
to keep any debris out of it. I turned starter over , and engine ran
fine for about a minute.. then stalled...when I remembered t-shirt.
Pulled t-shirt off of top of carb , and tried again...this time engine purred like a new re-built engine. So what happened ?
I have a theory that bone dry carb, took that long to fill from fuel pump...BTW fuel pump is new with about 25 hr.s on it now....
Or was there a piece of dust in carb that broke free ?
Don't know , but fine now...of course real test is a 3 hr. mowing
This problem has been going on since May, and has been making me crazy.
First post will tell you what I replaced.
Thanks to Old Machinest and others for your input.
Pete
yesterday, I installed new crank seal to stop oily mess all over front of engine and mower deck....took like 3 hr.s to do job , and 2 hrs. to clean messy greasy tractor. Engine is bone dry now....but still runs like crap from super rich
mixture.
Today I installed new Keihin carb ,with fuel accelerator pump, and bigger throat from ebay.... (thanks to Old Machinest )
After 10 -15 minutes or so of trying to get engine to run for more than
2- 3 seconds, I gave up in discusst and went to have a beer with my buddy and get his input. He said I got a bad carb off ebay.
Left there, in a state of depression... and went home , and cranked engine...
ran for like 4 seconds with choke on. Kept playing with it , and got it to run for about 5 seconds tops ..... gave up again , and decided to shower up, and call it quits. Picked up any tools , and put them away.
As I was walking away from tractor , I , for some reason, I decided to give it one more try, I forgot that I had thrown a t-shirt over the carb for the night ,
to keep any debris out of it. I turned starter over , and engine ran
fine for about a minute.. then stalled...when I remembered t-shirt.
Pulled t-shirt off of top of carb , and tried again...this time engine purred like a new re-built engine. So what happened ?
I have a theory that bone dry carb, took that long to fill from fuel pump...BTW fuel pump is new with about 25 hr.s on it now....
Or was there a piece of dust in carb that broke free ?
Don't know , but fine now...of course real test is a 3 hr. mowing
This problem has been going on since May, and has been making me crazy.
First post will tell you what I replaced.
Thanks to Old Machinest and others for your input.
Pete
One last carb question... there is a very fine spring on the throttle linkage rod,
to this Kohler CH 20..... it broke when removing it.
Dealer did not have one in stock ...so ordered a new one.
Now it seems it is unnecessary, as it seems to run fine without it.
I already ordered spring and will get new one next week.... but what is this very fine small spring for ? I can't figure out what it's purpose is ?
to this Kohler CH 20..... it broke when removing it.
Dealer did not have one in stock ...so ordered a new one.
Now it seems it is unnecessary, as it seems to run fine without it.
I already ordered spring and will get new one next week.... but what is this very fine small spring for ? I can't figure out what it's purpose is ?
OldMachinist
Platinum Member
The spring is just to keep pressure on the governor linkage. Without it the rpm's may surge up and down some.
Ok..thanks... I have it coming in on order and will use it.
I have 2 brand new Kohler crank seals....some how ordered wrong part #
They are new in Kolher bag. If you want them I will send them to you...no use to me.
Part # 24 032 19-S about 1.25 inch inner diameter, so must be for a
smaller engine.
Pete
I have 2 brand new Kohler crank seals....some how ordered wrong part #
They are new in Kolher bag. If you want them I will send them to you...no use to me.
Part # 24 032 19-S about 1.25 inch inner diameter, so must be for a
smaller engine.
Pete
OldMachinist
Platinum Member
I think that's the seal for the flywheel end of the crank. You may want to hang on to them if it is.
