Kohler Cougar 20 Wets The Bed - Valve Cover Oil Leak?

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Old 07-28-15, 07:36 AM
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Kohler Cougar 20 Wets The Bed - Valve Cover Oil Leak?

Hi Guys,

Having an issue with my Husqvarna's Kohler Cougar 20 Engine. Started smoking about 3 weeks ago, so parked it, and saw the OHV cover was leaking oil (see video). I tried fixing it once already. Since I didn't have a new gasket, I used the orange RTV sealant to make a new gasket. I didn't drive it for about 2 weeks, then fired it up, and it leaked worse than before. I thought the repair was ok, as I used a ton of that the high temp rtv sealant around the edges of the valve cover.

I don't know a lot about small engines, but wanted to ask to make sure it was normal that the valve cover should normally have that much oil in it. It would typically leak the worst (at least from what I could tell) when the engine was first shut down.

Hopefully, it just needs a replacement gasket. Do you guys think something more serious could be going on like a worn valve or busted rings? Thanks for any advice.

For reference, I have a video of the leak, and the engine specs in the vid/images below:

https://youtu.be/ACCGTdrkIT0

 
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Old 07-28-15, 09:49 AM
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It's normal, you just need a new gasket unless the valve cover itself is distorted from over tightening. These are notorious for this problem. I imagine every single one made and in service is leaking, has leaked, or will very soon. I don't know what possessed them to revert to using a cork gasket.
 
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