Johnson Utilimotor Gas 1 Cylinder Engine. Serial Number #l 12830 has good compression have not running for a while and lost the cover for the flywheel. Get yourself a great deal here. The item “Antique Johnson Utilimotor U 12830 Kick Start Hit & Miss Gas Engine Washer Motor” is in sale since Friday, May 20, 2016. This item is in the category “Business & Industrial\Light Equipment & Tools\Stationary Engines\Engines”. The seller is “absolutelyrose” and is located in Fremont, Nebraska. This item can be shipped to United States.