Ryobi BS901 Operator's Manual page 15

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 set screws
with the 4 mm hex key.
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.
Note: The lower blade guide support screw is the top screw
located on the right of the saw housing under the table. See
Figure 14.
WARNING:
Never operate saw without blade guard secured in place.
To do so could result in possible serious personal injury.
BLADE GUIDE
SCREWS
ADJUSTMENTS
BLADE GUIDE
SUPPORT SCREW
THRUST
BEARING
SCREW
LOWER BLADE
GUIDE SUPPORT
THRUST BEARING
Fig. 14
Page 15
BLADE GUIDE
ASSEMBLY
UPPER BLADE
GUIDE SUPPORT
BLADE GUIDES
BLADE GUARD REMOVED
FOR CLARIFICATION ONLY
To Adjust Blade Guides:
The blade guides help keep the blade from twisting and
binding. The blade will be ruined if the blade teeth hit the
blade guides while using the band saw. The set of teeth and
the sharpened edge of teeth will be damaged by hitting the
blade guides. Proper adjustment of the upper and lower blade
guides will prevent this from happening.
Remove the blade guard by loosening the two screws
set with the 4 mm hex key.
Loosen the two blade guide support screws that lock the
upper blade guides. Slide the two guides to within 1/32 in.
(0.8 mm) of the blade. Do not pinch the blade. Make sure
one guide is not further away from the blade than the
other. Retighten the two blade guide support screws
securely.
Replace the blade guard if no additional adjustments are
to be made.
Repeat this procedure on the lower blade guides located
under the saw table. See Figure 14.
THRUST
BEARING
THRUST
BEARING
SCREW
BLADE GUIDE
SUPPORT SCREW
Fig. 15