I started my mower the other day and I heard some knocking from the engine.
I turned the blades on and it struggled like it was going to shut down - so I turned the blades off. The knocking continued and I heard a loud bang and the engine came to a halt. Soon thereafter there was oil leakage. Any idea what can cause this? I also noticed there was oil on the air filter when I removed it. Something is seriously wrong here. Oil level was normal. This thing is less than 2 years old. It's a 19 HP Kohler engine. Any thoughts?
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