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Blade Tension
Blade tension is set with the blade tension
handwheel (A, Fig. 19) and is performed following
blade replacement and periodically as the blade
stretches from use.
Disconnect
power source before making any adjustments.
Referring to Figure 19:
1. Place the mode selection lever (F) in the Full
Tension position (see Figure 18).
2. Set
the
blade
handwheel
(A)
according
directions shown in Figure 19.
The gauge (B) indicates the approximate
tension according to the width of the blade in
inches. Initially, set the blade tension to
correspond to the width of your blade.
The JWBS-18QT comes with a 3/4" blade so
the tension should be set at 3/4" when using
this blade.
The JWBS-20QT comes with a 1" blade so the
tension should be set at 1" when using this
blade.
Note: For the JWBS-18QT the tension gauge
can also be seen from the front of the saw
through the wheel when the upper door is open.
As you become familiar with the saw, you may find
it necessary to change the blade tension from the
initial setting.
Keep in mind that too little or too much blade
tension can cause blade breakage and/or poor
cutting performance.
Tip: When the band saw is not being used, place
the mode selection lever (J, Fig. 18) to the Partial
Tension position – this will prolong the blade's life.
Blade Tracking
Tracking refers to the position of the saw blade on
the wheels while the machine is in operation.
Tracking has been factory-adjusted. However, it
should be checked occasionally, including after
every blade change.
Disconnect
power source before making any adjustments.
Important: The blade must be in Full or Partial
Tension positions before adjusting blade tracking
(see previous section). Make sure the blade guides
and other parts of the machine will not interfere
with the movement of the blade.
To inspect and adjust tracking, proceed as follows:
machine
from
tension
by
rotating
to
the
arrow
machine
from
the
1. Open upper front door to expose the wheel.
Rotate the wheel clockwise by hand and
observe the position of the blade on the wheel
through the window (E, Fig. 19). The blade
should ride upon the center of the wheel as
shown in Figure 20.
2. If the blade tends to move toward the edge of
the wheel, loosen the wing nut (D, Fig. 19) and
slightly rotate the knob (C, Fig. 19). Rotating
the knob clockwise will cause the blade to
move toward the rear edge of the wheel.
Rotating the knob counterclockwise will cause
the blade to move toward the front edge of the
wheel.
Note: This adjustment is sensitive; perform it in
small increments and give the blade time to
react to the changes as you continue to rotate
the wheel.
3. When the blade is tracking properly in the
center of the wheel, re-tighten the wing nut
(D, Fig. 19).
4. Close the upper front door.
16
Figure 19
Figure 20
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