Ryobi BD4600 English Manual - Page 16

adjustments WARNING: Before performing any adjustment, make sure the tool is unplugged from the power supply and the switch is in the OFF ( O ) position. Failure to heed this warning could result in serious personal injury. Adjusting the belt tracking See Figure 19. n Plug in belt/disc sander. To check belt tracking: n Turn the switch ON and then immediately turn it OFF. If the belt tends to slide off the idler drum or drive drum, the belt is not tracking properly. To adjust belt tracking: n If the sanding belt moves toward the disc, turn the tracking knob clockwise 1/4 turn. n If the sanding belt moves away from the disc, turn the tracking knob counterclockwise 1/4 turn. n Turn the switch ON and then immediately OFF again, noting belt movement. Readjust tracking knob if necessary. SQUARING THE WORKTABLE to the sanding DISC See Figure 20. n Unplug the belt/disc sander. n Using a combination square, check the angle of the worktable with the sanding belt. n If the worktable is not 90° with the disc, loosen the table lock knob and tilt the table. n Adjust worktable square to the sanding disc and retighten the table lock knob. NOTE: Use the adjustment screws beneath the worktable to move the table further or closer to the sanding disc. TABLE LOCK KNOB 4 x36 tracking knob switch Fig. 19 4 x36 COMBINATION SQUARE ADJUSTMENT SCREWS Fig. 20 16