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I have a Toro 20330 22" rotary mower with a B&S engine. It really runs nice except that under certain load conditions, I hear what sounds like a rod knock. It's been going on for a while and wonder if substituting SAE 40 oil for the 30 thats in there will quiet things down.

I friend gave me a very nice Toro 20330 recycler mower with B&S 190cc engine. For some reason, the engine speed seems quite high. I cleaned the carb with carb cleaner and everything seems to move freely. I have another identical mower and the engine runs at a more moderate and reasonable RPM...

Hi folks, this is my first post. I have two Toro 20330 22-inch self propelled Recycler mowers. Both mowers seem to have the same Briggs and Stratton 190cc engine. I've had one for several years and runs really nice. A friend recently gave me another seemingly identical Toro, a 20330 also...