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Page 22
ADJUSTMENTS
WARNING:
To avoid personal injury, maintain proper adjustment of
blade tension, blade guides, and thrust bearings.
n To check tension, raise the blade guide assembly all the
way up to expose the blade.
n Push the blade to the side with moderate force; the blade
should flex approximately 1/8 in. (3 mm).
ADJUSTING THRUST BEARINGS, BLADE
GUIDE SUPPORT, AND BLADE GUIDES
See Figures 24 - 26.
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.
WARNING:
Failure to turn the saw off, remove the switch key, and
unplug the saw could result in accidental starting causing
possible serious personal injury.
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 and
that both upper and lower blade guides be made simulta-
neously.
Adjust blade tracking and tension appropriate to the size
blade being used. Wide blades will require more tension than
narrow ones. Excessive tension may cause breakage of very
narrow blades while too little tension may cause wide blades
to track improperly and give poor cutting control.
NOTE: The thrust bearing screw is the set screw located
on the front of the blade guide support. It is the set screw
on the front of the saw housing below the saw table for the
lower bearing.
n Remove the blade guard by loosening the two screws.
n Turn the blade guide 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 blade guide lock knob clockwise
to retighten.
n Loosen the thrust bearing and blade guide support
screws. Adjust the thrust bearing and blade guide support
in or out so that the thrust bearing is centered on the
blade and is approximately 1/64 in. (.4 mm) away from
the back edge of the blade. Retighten the screws.
n Loosen the set screw and move the blade guide bearings
in and out. Rotating the blade guide shafts with a small
screwdriver, adjust the blade guide bearings so that
LOCK
UNLOCK
BLADE GUARD REMOVED
FOR CLARIFICATION ONLY
UPPER BLADE
GUIDE SUPPORT
BLADE
GUIDE
ASSEMBLY
THRUST
BEARING
BLADE GUIDE
SUPPORT
SCREW
Fig. 24
Fig. 25
BLADE GUIDE
SHAFTS
THRUST
BEARING
SCREW
they are just barely touching the sides of the blade and
positioned just far enough forward as to not interfere with
the blade's teeth.
NOTE: Do not allow blade guide bearings to contact
the blade's teeth when the blade is pushed against the
thrust bearing. Contact with teeth will damage the blade,
bearings, and cause noisy operation.
n Retighten all screws and replace the blade guard if no
additional adjustments are to be made.
SET SCREW
BLADE GUIDE
BEARING