Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I am having some issues with my snow thrower. Model # - 924075. Last week I started it and got it running good, however the drive didn't engage, I pulled the bottom plate and found the friction disk was not coming up to the wheel, also there seemed to be no movement when engaging the lever, today I pulled it apart and tried figuring out how to remove the wheels to try freeing them up as they are both in good shape, I couldn't figure it out, I did however adjust the tension nut to bring the friction disk higher up and applied some 3 in 1 to the shaft  which appeared to improve the movement, I got everything working right by hand in the service position, but when I started it and ran it the drive wouldn't disengage and it's hard to shift between gears. Did I just over adjust the tension nut or is there a bigger problem? How do I remove the friction wheel assembly to lube the shaft better and will that help? Thanks in advance for any help.