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Max boat motor size

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  • Max boat motor size

    I have a 1977 tinnie 11ft. It has a compliance plate that says up to 7hp. But a modern 9.8hp short shaft (e.g Tohatsu) is lighter than an old school 7hp from the 70’s. Does anyone know grounds for re-stamping? But I appreciate max capacity is probably not just about transem strength and weight of motor?
    2010 PB Challenger. Kings KCRR23 and 55H, sliders, front bar, warn winch, light force HID, 90L aux tank donated from NH Paj.

    1992 NH GLX, 2.5L TD. Tough Dog lift 2", Alpine Engineering IFS mod kit, DieselGas, Piranha dual battery, ARB bar with Warn M8000, Outlander roof rack & boat rollers, 10ft tinny with 6hp, GME TX4000 UHF & Electophone SSB CB, custom fridge slide & false floor, window tint & Airflow snorkel.

  • #2
    Just pull the old number off the cowling and replace it with a lower off 10 and put 7 on it. Boats now have weights for motor compliance..not h.p. I,ve had a few tinnies with bigger than legal motors but never had an issue.
    Dicko. FNQ

    2014 NW with all the usual stuff plus more.
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