Ryobi BS902 - Manual (Page 21)

21
ADJUSTMENTS
ADJUSTING THRUST BEARINGS, BLADE
GUIDE SUPPORT, AND BLADE GUIDES
See Figures 20 - 22.
The upper and lower blade guides and thrust bearings
support the band saw blade during cutting operations. The
adjustment of the guides and bearings should be checked
whenever a different blade is installed.
To Adjust Thrust Bearings:
The thrust bearings support the back edge of the blade
during cutting. The blade should not contact the thrust
bearings when you stop cutting. It is important that both
upper and lower thrust bearings be adjusted equally.
NOTE: The thrust bearing screw is the upper cap screw
located on the right side of the blade guide assembly. It is
the lower cap screw on the right side of the saw housing
below the saw table for the lower bearing. See Figures 20
and 21.

Remove the blade guard by loosening the two phillips
screws.
 Turn the lock knob counterclockwise to unlock the blade
guide assembly. Turning the blade guide knob clockwise,
raise the blade guide assembly as far as it will go. Turn
the lock knob clockwise to retighten.
 Adjust the thrust bearings first. Using the 4 mm hex key,
loosen the thrust bearing screw.
 Move the thrust bearing to within 1/64 in. (0.4 mm) of the
blade. Tighten the thrust bearing screw securely. Repeat
this procedure on the lower thrust bearing located below
the saw table.
 Replace the blade guard if no additional adjustments are
to be made.
To Adjust Blade Guide Support:
 Remove the blade guard by loosening the two phillips
screws.
 Adjust the position of the blade guide assembly. Loosen
the bottom screw on the right side of the blade guide
assembly using the 4 mm hex key.
 Slide the upper blade guide support on the shaft until
the front edge of the blade guides are about 1/64 in. (0.4
mm) behind the gullet of the blade. Tighten the screw
securely. Repeat this procedure for the lower blade guide
support.
 Replace the blade guard if no additional adjustments are
to be made.
Fig. 21
BLADE
GUIDE
ASSEMBLY
BLADE GUIDE
SUPPORT SCREW BLADE GUIDE
SCREWS
BLADE GUARD REMOVED
FOR CLARIFICATION ONLY
THRUST
BEARING
THRUST
BEARING
SCREW
Fig. 20
UPPER BLADE
GUIDE SUPPORT
LOWER BLADE
GUIDE SUPPORT
THRUST
BEARING
SCREW
THRUST BEARING
BLADE GUIDE
SCREWS
BLADE GUIDE
SUPPORT SCREW
NOTE: The lower blade guide support screw is the top screw
located on the right of the saw housing under the table. See
Figure 21.
WARNING:
Never operate saw without blade guard secured in
place. To do so could result in possible serious personal
injury.