Yamaha YK-X Series User Manual page 133

Recommended grease
Use the following harmonic drive grease.
4B No.2 (made by Harmonic Drive Systems Inc.)
! CAUTION
Harmonic drive
• Do not apply strong shocks or impacts to these parts such as with a hammer.
Also, do not scratch, scar or dent these parts by dropping, etc. Such actions
will damage the harmonic drive.
• The specified performance cannot be maintained if any part of the harmonic
drive is used in a damaged state. This damage or wear may also lead to
trouble with the harmonic drive.
• Since a positional shift occurs after replacing the harmonic drive, it is neces-
sary to make absolute reset, standard coordinate setting and point data set-
ting again.
5-11
CHAPTER 5 Periodic Inspection