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Yamaha YOB-431 オーナーズマニュアル

Other Adjustments

You can change the stroke from long to short by changing the position of the bearing stopper
screw on the YHR-567GDB. (Open F is shown in the illustration.)
Bearing stopper
screw
Install here for
Open Bb.
* When the bearing stopper screw is installed near the rotating center, the stroke will become short. When
the screw is installed far from the rotating center, the stroke will become long.
The 4th lever on the YHR-667V/VS, YHR-668D/ND, YHR-567/567GDB can be adjusted to better
fit the players hand size and position.
Use a screw driver and adjust the lever length as shown in the illustration below.
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