Power tool to rotate crankshaft

Home › Forum › Ask A Member › Power tool to rotate crankshaft

Viewing 10 posts - 1 through 10 (of 11 total)
1 2
  • Author
    Posts
  • October 12, 2021 at 9:06 pm #248020
    Carlasdaddy
    Participant

      I’ve seen videos of someone using a power tool to start an outboard by rotating crankshaft. What kind of tool can. be used to do this? Is a 12 volt cordless drill powerful enough to spin the crank?

      October 12, 2021 at 9:39 pm #248021
      trex014
      Participant

        US Member - 2 Years

        To spin to start and to spin just to spin are different things. If you just want to rotate the crank with the plugs out then yes the 12v will be more than adequate. I have a 8amp black and decker corded drill and a makita 12 amp corded drill and both started smoking when I tried to start up a 15 evinrude. Nothing was wrong with the motor, but just my personal experience.

        October 13, 2021 at 5:43 am #248023
        billw
        Participant

          US Member - 2 Years

          That’s why the recoil was invented. If you can’t start the engine with a functioning recoil, you need to address the problem of why not. Also, the flywheel nut has a specific torque. If you should happen to have the idea that an impact gun will start the motor, don’t do it. It will over torque the nut and damage the flywheel and maybe even the crank shaft. I am not sure whether a strong drill will over-torque a nut or not; but my guess is that on smaller motors, it probably will.

          Long live American manufacturing!

          October 13, 2021 at 8:40 am #248024
          The Boat House
          Participant

            Also depends on the size of the motor.
            I often use a battery drill for starting motors
            for the first time, checking compression, or
            on a motor that is hard starting, but they are
            early, low compression, small motors.

            October 13, 2021 at 12:45 pm #248025
            Carlasdaddy
            Participant

              I am talking mid-fifties 7.5 & 10hp Evinrudes

            • .
            October 13, 2021 at 2:58 pm #248027
            Mumbles
            Participant

              I’ve found that a corded drill works better for starting purposes than a cordless drill. Cordless drills stop instantly and can be ripped out of your hand when the motor starts while a corded drill can be feathered back and lifted off smoothly.

              October 13, 2021 at 3:23 pm #248028
              The Boat House
              Participant

                Ratchet adapter can eliminate the possibility of the drill
                being ripped out of your hand when the motor starts
                no matter what type of drill you should be using.

                October 13, 2021 at 5:33 pm #248032
                sutterhome
                Participant

                  DO IT ALL TIME ON 10HP OR LESS. THATS ALL I HAVE.SAVES YOUR ARM.ITS ALSO VERY NICE WAY TO YOU HELP DIAL IN THE HIGH SPEED VALVE, WHILE THE DRILL DOES ALL THE WORK

                  October 14, 2021 at 1:53 pm #248078
                  Carlasdaddy
                  Participant

                    Where can I but a ratchet adapter?

                    October 14, 2021 at 5:31 pm #248097
                    The Boat House
                    Participant

                      .

                    • Author
                      Posts
                      • Viewing 10 posts - 1 through 10 (of 11 total)
                      1 2
                      • You must be logged in to reply to this topic.