I have a nice old Jacobsen Homelite Imperial Sno 826 that wouldn't move forward because the gears weren't making good contact. Thinking that the gears were the problem, I looked all over the internet for new gears and couldn't find any. I own a machine shop so I decided to take the snow blower apart and machine new gears myself.
As I was disassembling the snow blower, I noticed that the axle had a lot of play in it. I quickly discovered that the original bearing were completely shot. As a result, the axle was able to move so much that the gears would no longer make contact.
I replaced the original bearings with new bearing that I found on eBay and I replaced the drive disc while I had it apart and now it is up and running like new again.
Note: You will have to drill new holes to mount the flange bearings and buy some washers for spacers.
If you go to eBay, search for the following:
- Drive Disc: 300 Drive Disc Replaces Case C22891 Jacobsen 158458
- Bearings: 3/4" UCFL204-12 2 Bolt Flange Bearing
Hope this helps - I have never seen anyone else mention this solution.