Hi! I own a Toro 22" Recycler with a briggs and stratton 190cc engine. Mower is about 9 months old and I am having problems with the mower. Starts up just fine, but after initial start mower will "throttle down". Fuel was purchased last week, oil was checked and i also cleaned the air filter as it was still white with very little accumulation in it. I then changed spark plug and still have had no luck. Here is a video of the mowers behavior. Big thanks in advance for any help you can provide as i am stumped.