Hi Miriam... poor wording on my part. We took the top off and repaired the bobbin wire springs. Both had fallen off so hubby fixed them. We also took the bottom cover off to clean out the lint and such. And to oil the machine. We used sewing machine oil to lube all moving parts....then we saw in the manual to use lubricant on the gears not sewing machine oil! So now we have to clean it off and then use grease.