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  1. A

    Tachometer Calibration

    How do I know the tach is giving me the correct reading without knowing what the motor is putting out in order to calibrate the tach correctly. I don’t want to assume the tach is correct with out knowing what I should be looking for and then adjust the tach to match the motor. I was using the...
  2. A

    Tachometer Calibration

    Why you thinking 12 pole even that would put the idling at 3000. I can’t idle down the motor much less and it will stall. The motor shakes a lot also it much less. I also tried the 12 pole setting on the tach which is setting 5 and the tach only reads between 200 to 400 rpm not close to 3000. I...
  3. A

    Tachometer Calibration

    I have a 1997 Mariner 40ph serial 0G483527 and purchased a new tach. I believe the motor is a 6 pole, is this correct or is it a 4 pole? I count what looks like 6 coils but that is only half the difference around the stator. I am trying to calibrate the Tach to the correct setting. To verify its...
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