I think they meant to lube the rollers, and the track. If the rollers, and
track dry up, the machine has to work harder. Lube the chain, or cable also.
BTW, I'd buy TWO sets of the rollers and gears. You never know if the
company will stay in business. With the state of economy in the USA. Take
the second set, put in envelope, and label the envelope with marker. Staple
that to the beam next to the opener.
Christopher A. Young
Learn more about Jesus
I have never lubed the gear. The door was serviced last year.
Somehow, the track was bent and had to be replaced.