Blade Tension Adjustment; Blade Tracking Adjustment - Jet JWBS-10 Operating Instructions Manual

Remove blade through slot (O) in table.
Guide the new blade through table slot (O) leading with
the smooth edge. Place it around the upper and lower
wheels and into the upper and lower blade guides (M,N).
Note: The blade teeth should face the operator, and they
should point down toward the table.
Position the blade to track in the middle of the rubber
tires on the wheels (M,N).
Engage tension on the blade by moving quick tension
handle (Q, Figure 23) to the left.
Replace guide rail (E, Figure 9).
Before operating the saw, check that the blade is
tracking and has proper tension.

7.2 Blade tension adjustment

Refer to Figure 23:
The blade tension knob (P) is used to adjust blade tension.
The quick tension lever (Q) must be engaged (moved to the
left) before making tension adjustments with knob (P).
All bearings on upper and lower guides must be clear of
blade.
Disconnect machine from power source.
Apply just enough tension to take slack out of blade.
Turn one wheel a few times to allow blade to position itself
in center of tire.
Note: If blade does not center, Adjusting blade tracking.
Fig. 22
A gauge (R) directly behind upper wheel indicates
approximate tension according to width of blade. Set blade
tension with knob (P) to correspond to blade width as
marked on gauge (R).
Note: A tension meter is recommended to precisely set
tension for the size of blade used.
As you become more experienced with the saw, you may
find it necessary to change the blade tension from the initial
setting. Changes in blade width and the type of material
being cut will have an effect on blade tension.
Keep in mind that too little or too much blade tension can
cause blade breakage.

7.3 Blade tracking adjustment

Refer to Figure 23:
Tracking refers to how the blade is situated upon the
wheels while in motion. The blade should track in the center
of both wheels.
The blade must be slightly tensioned before adjusting
blade tracking. Make sure blade guides and bearings (M,N,
Figure 22) do not interfere with blade. If blade tracking is
required, blade guide adjustment is described in sect to"
Guide bearing adjustment".
Open upper and lower doors. Rotate upper wheel forward
by hand, and observe position of blade on wheel through
the window (S, Figure 23). Blade should be in the center of
the wheel.
If adjustment is necessary:
Loosen handle (T) and make adjustment with tracking knob
(U) while rotating wheel by hand.
Tightening the tracking knob slightly will move the blade so
it tracks towards the rear of machine. Loosening the
tracking knob slightly will cause the blade to track toward
the front of the machine.
After blade is tracking in the center of the wheel, tighten
handle (T).
Upper blade guide positioning
Refer to Figure 24:
The upper blade guide assembly (W) should be adjusted to
just above the material being cut. To adjust:
Fig. 23