Hyd-Mech S-20, User Manual

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2.7
CHANGING BELT POSITION
To change the blade speed of the S-20 it is necessary to release the V belt tension and move the belt to
another set of pulley grooves. The tension on the V belt is maintained by means of a toggle handle assembly
that moves the motor. As the handle is moved to is locking position the motor is driven tight against the V belt.
The toggle handle can be adjusted to change the effective tension on the V belt by setting the lock nuts which
mount the handle to the motor mount plate. The motor mount plate pivots on rubber bushings that support the
motor.
GUIDE ARM POSITIONING
The S-20/23 Series II guide arms are adjustable to accommodate varying material widths. The guide arms
should be adjusted as close to the material width as possible while still allowing the material to pass between
them. This process of matching the guide arm width to the material size is important to optimize blade life.
To adjust the guide arms the locking handles are loosened and then the guide arms will slide on the main guide
bar that holds them. To loosen the handle it should be turned counter clockwise and to tighten the handle, turn
it clockwise. The photo illustrates the Guide Arms with the handles in the LOCKED position.
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Carbide Levers in Tensioned Position (Upright)