John Deere ET-3303-J - Manual (Page 12)

12 3 1/4-Inch Belt Sander Operator's Manual
OPERATION:
HOW TO USE THE BELT SANDER:
1.
How to adjust sanding position:
Push switch and turn sanding belt to check position.
Adjust sanding belt so that both edges protrude 1/6” -
1/8” (1.6mm-3mm) past edges of pulleys.
If sanding belt is operated too far on the inside, it
may cause abrasion and damage machine. Adjust
sanding belt position by turning adjust screw (Fig. 2).
- Turn adjust screw clockwise to move belt in.
- Turn adjust screw counterclockwise to move
belt out.
CAUTION: IF SANDING BELT MOVES DURING
OPERATION, ADJUSTMENT CAN
BE MADE WHILE IN OPERATION.
Operation
(Fig. 2)
2. To turn on switch:
Turn on switch while holding machine away from surface to be worked on. If
machine is placed on surface when switch is pushed, surface may be badly
scratched. The same applies when stopping the machine.
3. How to hold the machine:
Grasp handle and handle knob and hold machine against surface to be worked on
so that it contacts surface lightly.
Weight of machine itself is sufficient for sanding and polishing at highest efficiency.
Do not apply any additional pressure, for this would place unnecessary
load on motor, shortening life of sanding belt and lower work efficiency.
4. How to move machine:
Move machine forward first and then backward, repeating this motion.
5. How to select the proper sanding belt:
Choose sanding belt of proper grain size and grain type for your specific purpose,
by referring to the tables below (Table 1 and Table 2):
Derived finish Proper grain size
Coarse finish 30-40
Medium finish 40-100
Semi fine finish 80-240
Fine finish 180-400
Table 1
CAUTIONS:
- FOR GRAIN SIZE, REFER TO TABLE ABOVE.
- SANDING BELT GRAIN SHOULD BE COARSER THAN SANDPAPER USED
FOR MANUAL WORK.
- USE SANDING BELT OF SAME SIZE GRAIN UNTIL UNIFORM SURFACE IS
OBTAINED.
CHANGING GRAIN SIZES MAY RESULT IN POOR FINISH.
Grain type Surface to be worked on
AA Steel, wood
WA Wood, bamboo
CC Nonferrous metals, slate, plastics, concrete
Table 2