Grizzly G1019Z - Manual (Page 19)

Model G1019Z 14" Bandsaw -17-
Blade Tension
Figure 14. Location of blade guide controls.
H
I
The controls for the blade guide are shown in
Figure 14. The blade guide should always be
positioned so there is minimal space between the
guide and the top of the workpiece.
H. This knob locks the upper blade guide
assembly in position. The upper guide
should be adjusted to within
1 ⁄
4
" of the work-
piece for optimum blade support. Do not
operate bandsaw without locking the guide
post knob.
I. These spring-loaded bolts apply pressure
against the U-clamp to prevent the guide
post from dropping when the upper blade
guide knob is loosened.
Proper blade tension is important for optimum
bandsaw performance.
See Figure 13 for band-
saw tension controls. To increase blade tension,
turn the blade tension knob clockwise. To reduce
blade tension, turn the blade tension knob
counter-clockwise.
Since a variety of blades will work well with this
saw, final blade tension ultimately depends on the
type and size of blade you use. Thin blades
require less tension than wide blades. Too much
tension will result in blade breakage.
Do not make adjustments while the band-
saw is running. Ensure that the switch is off,
power is disconnected, and moving parts
have stopped before making adjustments.
Check adjustments while power is still dis-
connected by manually turning the bandsaw
wheel by hand.
A properly tensioned blade will track the cutting
line accurately and the cut will be smoother.
Proper blade tension can best be achieved by
determining the amount of blade deflection:
1. Ensure that the power is off and the saw is
unplugged. Raise the upper guide assem-
bly all the way and lock in place.
2. Press, with moderate pressure, on the face
of the blade with your thumb.
3. Turn the tensioning knob to adjust the
amount of tension. The blade should deflect
about
1 /
4
".
If the tension seems correct, make all of the other
adjustments to the saw and test run it. If the blade
is not cutting properly, the tension may be incor-
rect and readjustment may be needed.
Remember to reduce the blade tension when the
bandsaw is not in use, this will help prevent pre-
mature breakage of the blade and deformation of
the rubber tires.