A little Flywheel help on older jacobsen snow blower.

[jhngardner367]

Hey,Snowy_weather,
Here's a bit of info,that might help get you some parts.
The Homelite and JohnDeere 320/320E units are the same as the Jacobsen 320/320E.
In the '70s/'80s,Jacobsen made these units for Homelite and JD.
So,you may be able to find parts through JD. It's a long shot,since they weren't made after 1983,but you never know.

 

[Fish]

I can never find fine thread couplers around here...

Good job!!!

 

[briggs]

I can never find fine thread couplers around here...

Good job!!!

same here :confused2:

 

[Dave9354]

same here :confused2:

Try a little heat on the aluminum flywheel. The aluminum will heat and expand enough to fall off the steel shaft. I use this method and it works great. Not to much heat as you do not want to damage anything under the flywheel.

 

[exotion]

Try a little heat on the aluminum flywheel. The aluminum will heat and expand enough to fall off the steel shaft. I use this method and it works great. Not to much heat as you do not want to damage anything under the flywheel.

I don't recommend this. Aluminum is very sensitive to heat and will easily crack, melt, or bend there are plenty of alternative methods to heat. And heat should be used as a last resort.

 

[Fish]

I don't recommend this. Aluminum is very sensitive to heat and will easily crack, melt, or bend there are plenty of alternative methods to heat. And heat should be used as a last resort.

I agree... never use heat on any flywheel....

 

[bbauer225]

It ain't my way, it's Jacobsen's way, right out of their service manual. Kind of hard to argue with it, especially for me since I tried other ways with Jakes before finally finding the manual and using the way they recommended.

You protect the threads with the knock out nut over the end of the crankshaft. Since I couldn't locate a Jacobsen knock out nut, I used a coupling nut to spread the force over a greater area. You don't hit the threads, you hit the nut, and you don't have to hit it like you're going to drive it half way across the state, just a rap will do. Don't pry on it for the very reason you said a couple of posts ago, aluminum gets brittle and will stick to steel. You run the risk of breaking the flywheel.

I have a 21" Jacobson push mower with a 2 cycle engine and the flywheel looks like the one in the 1966 Jacobson manual excerpt you posted. Any chance you could post the rest of the manual, it looks very useful.