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Oil Level Rising on Cub Cadet


 
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Brian G. NY
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Joined: 02 Dec 2007
Posts: 1429
Location: Upstate New York

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PostPosted: Mon Oct 26, 2020 1:55 pm    Post subject: Oil Level Rising on Cub Cadet Reply to specific post Reply with quote

I check the oil level in my 3206 Cub every time I use it.
The last couple of times, the level appeared to increase just a little each time. I didn't think too much of it......thought it might not have been sitting quite level.
The last time I used it, it stalled and would not start. Turns out, the fuel pump was not working.
This tractor has the Kohler Command 20 HP engine and the fuel pump is located on top of one of the valve covers and apparently is powered by a rocker arm.
I haven't taken it apart yet but after doing a little research, I found that this is not an uncommon problem with these engines. The diaphragm fails and gasoline leaks directly into the engine.
I guess having the tractor stall was the best thing that could have happened.
So, if you have a Kohler engine with this type of fuel pump and you notice the oil level creeping up, expect to be replacing the fuel pump. Apparently, a replacement diaphragm is not available and a new pump, including a new valve cover is the alternative.
An OEM piece is about $78. I chose to take a chance on an aftermarket unit for about $25.
 
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old
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Joined: 12 Mar 2000
Posts: 86066
Location: Lake of the Ozarks area of MO

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PostPosted: Mon Oct 26, 2020 2:05 pm    Post subject: Re: Oil Level Rising on Cub Cadet Reply to specific post Reply with quote

Simple way to test for gas in the oil is pull the dipstick if it has one and move away from the machine and see if you can light the oil on the dipstick. If it lights easy it has ga in it if it lights hard no gas
 
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Russ from MN
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Joined: 11 Feb 2006
Posts: 11481
Location: N MN

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PostPosted: Tue Oct 27, 2020 4:48 am    Post subject: Re: Oil Level Rising on Cub Cadet Reply to specific post Reply with quote

That's a bad design, but it's probably a little safer than an electric. If there ever were a fire with an electric fuel pump
it would keep pumping after the engine quits. Myself, I would put an electric on it, they can be had for about $10. I think it
would give quicker starts, just turn the key on, wait 5 seconds, and start it.
 
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Brian G. NY
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Joined: 02 Dec 2007
Posts: 1429
Location: Upstate New York

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PostPosted: Tue Oct 27, 2020 6:54 am    Post subject: Re: Oil Level Rising on Cub Cadet Reply to specific post Reply with quote

Taryl Dactal has a YouTube video on how to change to a B&S vacuum operated fuel pump for about 10 bucks.
He guts the original fuel pump, closes off one of the ports and uses the other port for vacuum to operate the new pump.
Pretty clever idea but I'm going with the aftermarket original style.
 
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