The question was why it was taken apart, and then what is missing from it? I unbolted the case for the transmission from the snow thrower, and discovered that the worm gear transmission was made by Boston Reductor.
Removing the output shaft of the transmission was no problem since all of the work was already done for me. I initially wanted to figure out why the transmission was all apart. After soaking the machine down with penetrating oil every day for a week, I began working on it.
There was no major dirt on this machine, just rust everywhere. As with any new acquisition, the first step is usually to power wash and liberally soak the item in penetrating oil.
