Upgrade or replace Spring-Belt Drives?

[doctorwayne]

I keep neglecting to take pictures.....

Yeah, a picture or two would help those of us not totally familiar with the set-up.

.....I will also have to carefully remove one of the worm gears , but I imagine I can press these on and off.....

I assume that you're speaking of the worm, and not the axle gear. Why would you need to remove it from the shaft? If you can open the gearbox, you should be able to remove the worm and shaft, either by lifting it out or by turning it. Then all that's needed is to remove the pulley and replace it with the sprocket.

If you need to enlarge the hole in the sprocket, drill it out to a size slightly smaller than required, then finish with a properly-sized reamer. If space within the gearbox is insufficient to accommodate the thickess of the sprocket, it appears that you can removed a fair amount of material from the mounting boss. You may also gain some adjustment depending on which way the gear faces, as the mounting bosses are different thicknesses on each side of the sprocket.

Wayne