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  1. C

    Mercury optimax 90hp thermostat

    Hi I have a optimax 90hp 2006 model and I’m only getting 4500rmp I have had a diagnostic on the motor and it only show that the thermostat has stop working would that stop me getting my full rpm that should be around 5750 rpm thanks
  2. C

    What prop should I have on a mariner optimax 90hp, which is on a Quick silver 640 boat

    Hi just wondering if anyone can tell me what size prop I should have on my mariner optimax 90hp it’s on a quick silver 640 , it has a spitfire 17 pitch (4 blades ) at the minute but only getting 4400rmp thanks
  3. C

    90hp mariner optimax 2006

    Hi just wondering if it is normal for my outboard to make a Constant beeping noise when I idle it to 4000rmp when out of gear and when it is in gear I’m only getting 4400rmp thanks
  4. C

    Mercury 4 hp outboard won't turn when in gear

    Hi could anyone help me my mercury 4hp outboard won't turn direction when in gear but will turn when not in gear can anyone help thanks carl
  5. C

    Mariner manual release screw

    Hi I have a mariner 75hp witch I think it a 1990 model and the tilt trim has stop working and the motor is stuck down I have had a look at the manual release screw and it doesn't look good and doesn't want to move and does anyone no with direction you need to screw it to release the hydraulic...
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