flywheel nut

[johndeeretrailfire440]

I need to know the size of the nut to get one, the thread size and pitch ect.I have lost mine somewhere ....

[bpmailman]

which engine are you working on?
mike

[johndeeretrailfire440]

It is a 1979 trailfire 440 air cooled kawasaki

[bpmailman]

18mm