Briggs And Stratton/simplicity 190403 3044 8 HP Horizontal Shaft Engine UsedBriggs and Stratton 190403 3044 8HP Horizontal Shaft Engine. Unit came off Simplicity 860 model# 1691376. Crankshaft is 2 7/8 Long X 1” O. And is keyed and tapped. No Spark- ran on gas sprayed into carb, will need carb work. Unit ships without.