Rusty Bearings

Yo-Yo Mods and Maintenance
1

I feel like I’m posting too much, but I continually have more questions. I have some rusty bearings from old yoyo’s, is there a safe way to “fix” these?

2

Try soaking in WD-40, then clean well.

Or:
How to clean your rusty ball bearings.

How to Clean Your YoYo Bearing.

For these and other fine bits of info, check this out:
Useful modification and maintenance guides - Clean, repair, tune, fix yoyos