6. ASSEMBLY
BAS-342G
69
<Measuring the tension>
1. Move the X base plate (1) to the left edge (in the direction of the arrow).
2. Use a tension gauge (2) to measure the tension at the middle of the lower belt while referring to “Measurement position” in
the illustration.
* Check that the value for the belt tension is within the following value ranges.
[For a new belt: 650 to 750 N; For a reused belt: 520 to 600 N]
* Be sure to use a belt tension gauge to measure the belt tension, and measure from the middle of the lower belt.
* The belt tension gauge should be set to measure a unit weight of 0.04 kg/m, a belt width of 50 mm and a span length of 485
mm.
* It is recommended that you use the Yunitta U-505 tension gauge.
1298B
1299B
Finger pressing
position
(Lower belt)
Microphone
position
(Lower belt)
[Measurement position]
Middle of
belt
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