Smoking hot

[Larry Livingston 0]

Newbies first question: I have a simplicity with a 20 horse koler. I bought it used last year and right from the start I had trouble with it. It starts fine and runs fine, no smoke from anywhere, but after about 25 minutes of mowing it begins to smoke. Not from the exhust but from the somewhere inside the engine. When I shut it off oil seems to come from somewhere (I can't find the source) and hot oil vapors come from everywhere but the exhaust. Where should I start--Larry

[DMedal 1]

if you've not done so already, check under the engine shrouds for mouse nests, grass clippings etc - that seems to be pretty common. I started my Troybilt tiller last year and had no less than 8 little mice come bailing out in a row. The time it takes it before it starts smoking makes me think you're overheating it.

[Killer_A-C 0]

Cant help you with your tractor but "Welcome to the club"8D8D

[johnmonkey 4]

My guess is blocked air vanes (from mouse nest). Welcome to the club, if you want to learn alot, you should become a member ($10.00 per year) and you can download pictures etc. JH

[BLT 725]

Do you have a CH20 engine? There is a possibility that the breather cover ahead of the carb is your culprit. I just went thru that scenario on my Sunstar. Either the engines originally came with metal to metal sealing using a silicone gasket or or it was replaced at one time without a gasket. Anyway mine bubbled out around the area of the. oil pressure switch and spilled forward on to the muffler and left a spot on the floor. Worked on it last Saturday and no more leak. Also note that the breather cover is channeled to operate the pressure switch and that pressure alone will force a leak. Kohler has a rubber impregnated gasket for that, super. It was about an hour and one job for me. Also the pressure switch might be weeping or loose. All are easy to get at when the air cleaner is removed.

[Larry Livingston 0]

Thanks to all that answered. BLT your answer sounds like something I will try first. Did you have to remove the engine to get at it?

[BLT 725]

quote:

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Originally posted by Larry Livingston
Thanks to all that answered. BLT your answer sounds like something I will try first. Did you have to remove the engine to get at it?

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Take off your air cleaner and you can see where the four bolts attach it. Throttle control also has to come off. If you have digital camera take a couple of before pictures.