This engine starts and runs well, and was tested on December 1st 2020. This engine is complete, except for qn air filter, base, and cover. This is a primer type engine, so for it to work, you will have to have the correct air filter base and an oem primer gasket. Crankshaft diameter is 1", keyed and tapped, and 2 1/2" long. All oil and gas has been drained for shipping. Engine will smoke for a short period of time, as ot has been in many positions during shipping, removal, and storage. Sold as is. Do not buy this engine unless you are sure it will fit your needs, as there are no returns.