I found a used Spicer locally that I swapped in and the brakes were totally frozen. I bought it attached to an old mower frame and I guess it must have been sitting in the dirt for a while. It took a few squirts of Kroil and a big punch but I finally broke them free. I went ahead and flipped over the brake pads while I had it off. So the good news is that I can work on my old Tecumseh at my leisure.Pull it apart first and have a look befor you order anything .
The most commonly replaced parts are the shift keys which get broke because people shift while moving.
If you are going to make the effort & wear the grime you may as well do everything that needs doing while you are in there
But in a fix it quick & cheap, just the shaft & the seal will do .
While it is off pull the brake caliper off by removing the outside buts only then clean & polish the two pins which press on the pad.
Some light grease or never sieze on the pins before you put them back.
I’m hopeful it won’t require taking those assemblies apart. That looks like a disaster just waiting to happenJust to add two things. Be very careful when disassembling the two rows of gears, as they have very sharp edges and like to cut anything. Also note the direction you remove the shift washers (part #30) as they are directional and if you reverse any of them the unit will not shift properly.