Ryobi BS903 Manual Del Operador página 14

ADJUSTING BLADE GUIDE SUPPORT, THRUST
BEARINGS, AND BLADE GUIDE BEARINGS
see Figures 20 - 22, page 22.
NOTE: Tighten the lock knob and refer to "Adjusting Blade
Tension" and "Tracking the Blade" procedures explained
in the assemBLY section of this operator's manual prior
to making adjustments. Fine tuning of the bearings can be
done with a flathead screwdriver.
The upper and lower blade guide bearings and thrust
bearings support the saw blade during cutting operations.
The adjustment of the guide bearings should be checked
whenever a different blade is installed.
To Adjust Blade Guide Support:
 Remove the blade guard by loosening the two phillips
screws.
 Adjust the position of the blade guide support. Loosen
the blade guide support screw on the right side of the
blade guide assembly using the 2.5 mm hex key.
 Slide the upper blade guide support on the shaft until the
front edge of the thrust bearing is about 1/64 in. behind
the back 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.
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.
 Remove the blade guard assembly by loosening the two
phillips screws.
 Using the 2.5 mm hex key, loosen the thrust bearing
screw.
 Slide the thrust bearing until the bearing is centered
behind the blade. Tighten the thrust bearing screw
securely.
ADJUSTMENTS
NOTE: When properly adjusted, the blade will be centered
in front of the thrust bearing.
 Using a flathead screwdriver, turn the screw (centered in
the thrust bearing) until the bearing is within 1/64 in. of
the blade.
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.
WARNING:
Never operate saw without the blade guard secured in
place. To do so could result in possible serious personal
injury.
To Adjust Blade Guide Bearings:
The blade guide bearings help keep the blade from twisting
and binding. The blade can be ruined if the blade teeth hit
the bearings while using the band saw.
 Remove the blade guard by loosening the two phillips
screws.
 Using a 2.5 mm hex key, loosen the two blade guide
screws that lock the upper blade guide bearings. Slide
the blade guide bearings to within 1/64 in. behind the
gullet of the blade. Retighten the two blade guide screws
securely.
 Using a flathead screwdriver, turn the screw (centered
in the blade guide bearing) until the bearing is within
1/64 in. of the blade. Do not pinch the blade. Make sure
one guide is not further away from the blade than the
other.
Repeat this procedure on the lower blade guide bearings
located below the saw table. Replace the blade guard if no
additional adjustments are to be made.
14 — English