Yamaha YK-X Series User Manual page 147

Harmonic drive
M3 setscrew
(supplied with harmonic drive)
O-ring e
M3×30 (M4×30)
Fig. 5-11
O-ring w
Wave generator
(Harmonic drive)
YK500XG, YK600XG
Fig. 5-12
5-25
CHAPTER 5 Periodic Inspection
M3×30L (M4×30L) panhead bolt
During reassembly, reattach
this bolt to the same position
on the X-axis arm as before.
M4 nut (M5 nut)
O-ring q