Mower Problem---Solved?

[ronbo]

Re-post from another forum, my guess was a head gasket also, due to similar result due to my recent snowblower problem.

"Neighbor has an old bobcat mower with very little hours on it. IT has a Kohler Magnum 18 engine. It cranks and runs fine and cuts fine but after about 10 minutes, it starts smoking real bad and spitting oil out of the exhaust. You would think that if it is a broken piston it would pretty much immediately start smoking. Any ideas."

best answer to problem

"Nope. A Kohler MV18 (Magnum 18) is a full-pressure lube system.

We had a similar issue with our Magnum 16. Turned out to be a blown head gasket - which then caused some other strange issues. Pulled the head, replaced the gasket and everything's been great since.

Those Magnums were great little motors. Too bad they don't make them anymore"

 

[ronbo]

Correction, a different answer from a small engine mechanic.

"Drain the oil, new oil, new filter...its probably thinned out..and is blowing up the vent into the air filter housing, common when you get a stuck float that lets fuel into the engine, or a bad fuel pump that lets fuel into the engine...

Its incredibly uncommon for these engines to wear out, or even get tired, especially to the point of smoking...Im talking, like...typical lifespan is 2000 hours on a magnum Twin."