Coleman 5 KW electric start generator with Briggs and Stratton 11 hp engine. Rated for extended run, 5 gal gas tank. I used it mostly as a standby generator for power outages and once a year to run a pump draining down a 1/4 acre pond for weed removal. The battery in the video is not included because it is too large for the mount and the terminals are backwards for convenient hookup. It just needs a small lawnmower battery.
I can send two videos to a cell phone if you are interested.