When the control knob is pushed backward the unit moves forward and then stops

• Cause of failure:

  1. This happens when belly switch is touched. This is normal.

  2. Belly switch is stuck the cover can not be pressed down or pop up. or it is damaged.

  3. Belly switch button is damaged: Disassemble the handle and use a multimeter to check continuity of the button.

  
  

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