Magneto nut? 30-40 lbs?

[Lunkerhunter72]

hello, i am wondering if someone can help me out, I have removed the nut from my magneto and am wondering if it matters what position i put it back on? i know it has to be 30-40lbs torque but am not sure whether it matters on the postioning of the magneto itself?
Thanks.

 

[HighTrim]

Re: Magneto nut? 30-40 lbs?

If you mean the flywheel, it will only go on one way. The key will align with the groove in the flywheel.

Ensure the taper is clean and dry. Paint thinner or acetone will clean up the surfaces. Do not add anything sill like loctite, lol.

What model motor is it?

 

[Lunkerhunter72]

Re: Magneto nut? 30-40 lbs?

its a 79 johnson 4 model 4w79.Thanks for the info.im a noob when it comes to gas motors.

 

[Lunkerhunter72]

Re: Magneto nut? 30-40 lbs?

is the 30-40 lbs critical or could i just do it with a normal ratchet?

 

[Joe Reeves]

Re: Magneto nut? 30-40 lbs?

With a ratchet or breaker bar, you may get lucky and hit right around that 30 or 40 foot pound figure, but if not...............

If not torqued properly, the flywheel key will certainly shear which will cause damage to the flywheel and crankshaft taper. You can borrow a torque wrench at most automotive stores.

 

[Lunkerhunter72]

Re: Magneto nut? 30-40 lbs?

Great. I am definetly gonna tighten it properly!! Thanks for all your help. These forums have a bunch of great members that help other members.

 

[milliesdad]

Re: Magneto nut? 30-40 lbs?

Beg,borrow or rent a torque wrench and do it right the forst time.