I hope it's OK to ask this, as it's a lawn care forum, but didn't know where to go to find this info. This was a freebie. Briggs and Stratton power washer. I'm going through the whole thing. Trying to find out the specs of the engine; bore, stroke, horse power, etc. Seems like all the rebuild kits for the engine are based on what horsepower it is. I measured the piston, apprx 2.5". Also would like to know if there's a rebuild kit id available for the pump. TIA.