I have (what I think) is an early 80's 20HP Mercury outboard. Can't find a plate that has the serial number on it. Where would I find this? All I know about the motor so far is it has a "Thunderbolt" ignition and two-tone blue strip on the cowling. It is a two cylinder two stroke.
I'm actually looking for the impeller part number. Just poking around for various 20HP engines, it looks like it might be a Sierra 18-3057. Do most of these motors use that impeller regardless of year?
Thanks,
I'm actually looking for the impeller part number. Just poking around for various 20HP engines, it looks like it might be a Sierra 18-3057. Do most of these motors use that impeller regardless of year?
Thanks,