torque specs for flywheel nut

saylorking · May 6, 2011

i just bought a '63 johnson outboard (40hp), and i don't know how tight to get the nut that holds the flywheel. does anyone know the corrects specs?

Joe Reeves · May 6, 2011

Re: torque specs for flywheel nut

Flywheel nut torque = 105 foot pounds.

saylorking · May 6, 2011

Re: torque specs for flywheel nut

Thanks! That sure does seem like a lot of torque. For some reason I expected it to be more like 40-45.

tx1961whaler · May 6, 2011

Re: torque specs for flywheel nut

For that motor, less than 105 ft-lbs will tend to break flywheel keys.

boobie · May 6, 2011

Re: torque specs for flywheel nut

That mtr had what they called "the big taper c/s". Follow Joes recommendations.