Yamaha Disklavier Silent Mark III Service Manual page 68

DU1A
Shank stopper unit adjustment
When the silent function is turned ON and turned OFF, both the shank stopper lever and the MD
lever will stop by touching each stroke end. (Fig.11,12) If either of them doesn't touch its
end, there is stroke loss of shank stopper move. It can be re-adjusted by using the adjust screw
to get the maximum stroke distance. (Fig.13)
Check STEP 2 if the adjustment has been done.
68
Shank stopper lever
Fig. 11
Silent ON
MD lever
Silent OFF
Adjust screw
Fig. 13
Fig. 12