leak

I have a Kaw FH721V, 25 hp. Changed the oil recently to Shell T-5, 15w40. I had been using SAE 30 full synthetic, Cut grass for about 45 minutes and the engine sounded strange. Sounded like a bad muffler. I checked the oil and there wasn’t any on the stick. I put in about a quart to the full...

OK... I noticed that last time I mowed, that the mower was making a kind of clunking sort of noise intermittently. I use earplugs so I can't be more specific more than that. Today, it was doing it again. I tried with and without the front wheel drive power assist, because it SEEMED like it...

This topic came up after I started a thread about my starter on this engine. Seemed like a new thread is in order: One or more significant oil leaks have existed for sometime causing quite a mess on the entire upper engine (mostly hidden by the engine cover). Txmowman pointed to the breather...