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  1. #1
    Member
    Join Date
    Aug 2005
    Location
    Modesto
    Posts
    1,946

    2021 AVX1880 W/115hp Merc.Pro XS over reving?

    Out yesterday and saw after about 15 min. of running up and down speeds took toward highest and at 47 mph (graph gps) the tach showed 6500rpm. Immediately slowed speed way down as didn't like the over rev. Anyway to bring rpm's down a little - not sure what that would do to speed? Prop is 23 pitch Tempest+. Manual jack inner plate up about 1/2" from outer. Will moving up or down maybe 1/4" at a time increase or lower rpm's? Thanks for any help.

  2. Member ifishinxs's Avatar
    Join Date
    Jul 2015
    Location
    Southern Utah
    Posts
    6,403
    #2
    Your tach reading is likely wrong. Get Vessel view mobil.
    The rev limiter will kick in if the motor rpms get to high.
    2024 Phoenix 818, Mercury 175 (3B414035) Trick Steps, 3 Garmin 106 SV,s, LVS 34. BoatEFX dual bow mount. Ionic 12V 125AH, 2 12V 100 ah LiTime’s for the TM. Minn Kota 345 PCL charger,