Yamaha GB1KS Maintenance Handbook page 8

◆Hammer shank stopping position adjustment
String stroke distance
Adjustment spot
Shank stopping position: 5 – 6mm from the string
Fig.11
5 - 6mm
Replacement of the hammer shank stopper cushioning
(Normally visual confirmation only is OK.)
Shank stopper cushioning
Thickness (t)
5.5mm
5.0mm
4.5mm
4.0mm
3.5mm
3.0mm
2.5mm
Cushion length are all 378mm.
Cut as follows.
(Bass: 365mm, Middle: 375mm, Treble: 232mm)
- 7 -
Cushioning Thickness (t)
Component No. Remarks
T6210100 Used in product
T6210110 Same as above
T6210120 Same as above
T6210130 Same as above
T6210140 Same as above
T6210150 For adjustment
T6210160 Same as above