Owners manual
40A GRINDER/SANDER/POLISHER   
4 
Operations 
Note 
THOROUGHLY READ THROUGH THE ENTIRE MANUAL BEFORE OPERATING THIS MACHINE! 
PURPOSE 
Ø  The purpose of the 40A is to sand, grind, burnish and polish a variety of surfaces from wood to steel. 
Ø  This machine uses a spring loaded sanding head, which allows for use on round surfaces. This increases 
the sanding surface area making for a faster more uniform surface treatment.   
OPERATIONAL PRINCIPLES 
Ø  The main round machine shaft rotates in a forward direction (when holding the machine by the main 
handle). The motor connects to the main rubber drive, which makes contact with the non-abrasive side of 
the sanding belt. The two smaller secondary drive wheels also make contact with the non-abrasive side of 
the belt.  
MACHINE COMPONENTS 
Ø  The main components of the 40A are the belt holder assembly, gearbox, motor, housing and main handle. 
The belt holder is driven by the gearbox and the motor.  
o  These components must be not be removed except by a qualified technician. Power must be 
disconnected prior to any service.  
Ø  The machine has a variable speed switch located on the main handle by the power cord base. This switch 
has numbers signifying low (1) to high (6) speeds.  
Chapter 
3 










