Two cycle engine. This is a low houred(less than 50 hours), long shaft 9.9 HP Mercury outboard. Has folding tiller style contol arm for forward and reverse shifting as well as the throtlle control incorporated. Gas line and fuel tank is included. Engine was recently started and purrs "like a kitten" and runs as it should. Prop is in good condition. I bought unit new. Craig Pottberg Downs,KS 785-346-6170