Some of it, yes. Tightening loose hinge bolts, lubricating hinges and rollers, clearing debris from the track, replacing weatherstripping along the bottom - all reasonable weekend jobs on a door this age. What you should not touch is the torsion spring system. A torsion spring on a standard door carries enough stored energy to break bones or worse if it lets go while you're working on it, and on the larger insulated doors common in higher-income areas like this one, that spring is wound tighter to handle the extra weight. If the door won't move, the opener is straining, or you hear a loud bang and then nothing - that's a spring or cable job, not a DIY afternoon. We'd rather you call us before you're hurt than after.