Re: Model U Speeditwin Specs Help

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September 16, 2015 at 6:13 pm #24021
George Emmanuel
Participant

    US Member

    Evinrude manuals back then are only parts,–no specifications. There are specifications in the Evinrude Service Manual reproduced by American Outboard Motor (Dora Kowalek).
    Here’s what I have: Piston clearance 1928-31, .009–.0101: Piston ring part # 100055, # of rings–3, Diameter of ring 2.750, Width .1240-.1245, Compression lbs when compressed 6 1/2, Gap clearance .030-.040

    I can supply a copy of the parts manual if needed….let me know.

    George