1972 6 hp johnson flywheell removal

[liz873]

Whats the best way to keep flywheel stationary while loosening nut?

 

[kbait]

Re: 1972 6 hp johnson flywheell removal

I use an electric impact wrench, so no need to hold flywheel. You'll need a strap wrench, or use the strap from a ratchet strap to wrap around and secure to something to hold it still while you remove the flywheel nut. Good luck!

 

[kfa4303]

Re: 1972 6 hp johnson flywheell removal

Ditto. You should be able to get a medium sized, rubber strap wrench for about $7. Use it to hold the flywheel while you use a ratchet to loosen/tighten the nut, you'll then need a flywheel (a.k.a. harmonic balancer) puller with 3 GRADE 8 bolts (1/4" x 20 x 3") and washers. This link may help too. It can walk you through an entire tune up. It's for a different model, but it's all the same basic procedures. You can get any tune up parts you may need (carb kits, seal kits, points and condensers, etc...) right here at iboats too.

http://www.duckworksmagazine.com/07/columns/max/index1.htm

 

[jay_merrill]

Re: 1972 6 hp johnson flywheell removal

An impact gun works well for removal of the nut, but don't use one to reinstall/tighten it. You must torque the nut to the proper value and over-tightening it can damage the flywheel. As suggested, a strap wrench works well.

 

[F_R]

Re: 1972 6 hp johnson flywheell removal

You can make your own strap wrench for free if you have the stuff laying around. A piece of strap or even an old trousers belt, and a piece of wood and a few nails.

 

[liz873]

Re: 1972 6 hp johnson flywheell removal

An impact gun works well for removal of the nut, but don't use one to reinstall/tighten it. You must torque the nut to the proper value and over-tightening it can damage the flywheel. As suggested, a strap wrench works well.

Thnx, made a little puller with scrap steel popped right off using 3 hardened bolts and a little heat

 

[jay_merrill]

Re: 1972 6 hp johnson flywheell removal

Sounds like you were talking more about pulling the flywheel than dealing with the nut. Its good that you made a proper type puller. Lots of people make the mistake of using a puller that pulls from the outer edge of the flywheel, rather than from bolts screwed into the proper holes in it. That's a very good way to break a flywheel, because they are made of aluminum and can't withstand the stresses of being pulled from the outer edge.