The CV20S-65605 engine has an 1-1/8" x 3-5/32" crankshaft. If you have a Command Twin (CV18S through CV25S, or CV620-CV730) you can use any of the engines listed below. There may be minor differences, but external engine parts should be interchangeable from your original engine to the new one. You can also purchase an engine with an 1-1/8" shaft that is longer, and cut it down to 3-5/32", as they are drilled ant tapped 2" deep, and it is not hardened steel. If you have a CV493S engine, please contact us regarding a replacement engine. If your engine is not listed here, please contact us.
