Results 1 to 4 of 4
  1. #1
    Member champ188's Avatar
    Join Date
    Jun 2004
    Location
    Lake Fork, Texas
    Posts
    830

    Upgrade question

    Have a 2005 225 Optimax non pro xs. Will be upgrading to a 4 stroke soon. Will I need to change throttle control? Hotfoot? I have analog gauges, will I need to upgrade gauges as well?

  2. BBC SPONSOR
    Join Date
    Oct 2006
    Location
    Calvert City, Ky
    Posts
    5,399
    #2
    Control box is the same, hotfoot may have to be changed to achieve proper throttle calibration. Analog gauges should be fine as well.
    Fastbass Marine LLC
    We specialize in NEW and USED ALLISON BOATS, Blazer Boats, Platinum Mercury Marine Repower Center, AquaTraction Flooring, and custom marine electronic installations on beautiful Kentucky and Barkley Lakes.

    2022 Allison XB-21 BasSport Pro Elite
    2022 Mercury 450R

    2012 Bullet 21ss
    2005 Mercury 300X

    https://youtu.be/FOnAGNWOgZ0

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    97,865
    #3
    You will need a different rigging tube kit, and will likely need to extend your keyswitch harness (often 10' extension is the best option as it keeps the 14-pin out of the rigging tube).

    Steering needs to be inspected to validate it's in excellent condition, jackplate also, battery will need to be a minimum of 975 CCA for a fishing application (I would recommend AGM), and you'll need a propeller that's suitable for the new setup (often 2 pitch points lower than current prop).

    If you don't have a Smartcraft Display, VesselView or Smartcraft Connect, this would be the appropriate time to plan for it also.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  4. Member champ188's Avatar
    Join Date
    Jun 2004
    Location
    Lake Fork, Texas
    Posts
    830
    #4
    Thank you all