Looking at a used boat with this motor
1984 (?) Mercury 90hp 6 inline 2 stroke or 4? s/n: 6571408
Info gotten from the serial number. I don't see any plates with the letters for shaft length (it's a 20" shaft), etc. just those numbers on plate on the transom mount (right rear), or starboard/aft...
They say it's a 4 stroke, but year and tower of power indicates it's a 2 stroke. They started it up, but who knows if they actually added oil to gas or not, they don't seem very boat/engine knowledgeable.
Can't seem to find any specs, but what I do find indicates it's 2stroke, except one thing that says there's an autoblend part.
Thanks for any links/help.
Oh, looked for an oil tank, couldn't find one, nor could we find a dipstick to check the oil, nor place to put oil in if a 4 stroke.
1984 (?) Mercury 90hp 6 inline 2 stroke or 4? s/n: 6571408
Info gotten from the serial number. I don't see any plates with the letters for shaft length (it's a 20" shaft), etc. just those numbers on plate on the transom mount (right rear), or starboard/aft...
They say it's a 4 stroke, but year and tower of power indicates it's a 2 stroke. They started it up, but who knows if they actually added oil to gas or not, they don't seem very boat/engine knowledgeable.
Can't seem to find any specs, but what I do find indicates it's 2stroke, except one thing that says there's an autoblend part.
Thanks for any links/help.
Oh, looked for an oil tank, couldn't find one, nor could we find a dipstick to check the oil, nor place to put oil in if a 4 stroke.