Had the good luck to find a used Hobart N50 in what seems like
very good condition. Haven't tested it under load but it makes
all the right noises and none of the wrong ones when unloaded.

The seller said he'd used in only three times in the last three
years and suggested it might be a good time to change the gear
oil. I doubt it's necessary but would like to know how. It's not
obvious from looking at the outside where the fill and drain ports
are. Any information at all would be helpful.

Thanks for reading,

bob prohaska