Yamaha Silent Piano SH Series Maintenance Handbook page 9

Upright Piano
■Hammer shank stopper check / adjustment
[Standard]
・Shank stop position is 4.5mm to 7mm at each section when silent
mechanism is engaged.
・While silent mechanism is disengaged, hammer shanks do not contact
the hammer shank stopper when depressing keys.
[Procedure]
Adjust turn buckle.
・Rotate turn buckle counterclockwise to make Shank stop position narrower.
・Rotate turn buckle clockwise to make Shank stop position wider.
In case the Shank stop position differs between sections, loosen adjustment screws and adjust the
position of the rails of each section on the shank stopper assembly.
Adjustment screws
‐ 9 ‐
4.5mm～7mm