the old manual machines pop up on CL around here on a semi regular basis.
my first job at 14 or 15 was working weekends at a gas station. I loved battery charges and tires as they were extra $$
SO a guy brings in a tire and rim and wants the tire mounted. COOL!!! said he be back later.
I must've spent 2-3 hours trying to get the tire on the rim. Worked up quite a sweat as it was hot out. Finally my ex BIL stops by. he looks at the tire and rim. He proceeds to tell me it was a 14" tire and a 15" rim I wouldn't put it past him to have set me up LOL