Adjusting Blade Tension; Adjusting Blade Tracking - Jet JWBS-12OS Operating Instructions And Parts Manual

4. Remove the table insert (B) and table pin (C).
5. Loosen blade tension by turning the tension
knob (A) counterclockwise.
6. Remove blade (J) from upper and lower wheels
and from between the upper (F) and lower
blade guides (G).
7. Turn the blade to direct it through the slot in
table and remove.
8. Guide the new blade through table slot leading
with the smooth edge. Place it around the
upper and lower wheels and into the upper (F)
and lower blade guides (G).
Note: The blade teeth should face the operator,
and they should point down toward the table.
9. Position the blade to track in the middle of the
rubber tires on the wheels.
10. Re-install the table insert (B), table pin (C) and
blade guard (H).
11. Tension and track the blade before operating
saw (see Adjusting
Adjusting Blade Tracking sections below).

Adjusting Blade Tension

Referring to Figure 9:
1. Disconnect machine from power source.
2. Turn blade tension knob clockwise to tension
blade.
3. Apply just enough tension to take the slack out
of the blade.
4. Turn one wheel a few times to move the blade
to the center of the tire.
5. With a meter, tension the blade appropriately
for the size of blade used.
6. A gauge on the upper wheel slide bracket
indicates the approximate tension according to
the width of the blade. Initially, set the blade
tension to correspond to the blade width as
marked on the gauge.
Note 1: 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.
Note 2: Keep in mind that too little or too much
blade tension can cause blade breakage.
Blade Tension and
12

Adjusting Blade Tracking

Referring to Figure 9:
Disconnect machine from the
power source! Never adjust blade tracking with
the machine running! Failure to comply may
cause serious injury!
Tracking refers to how the blade is situated upon
the wheels while in motion. The blade should track
in the center of both wheels.
Figure 9
The blade must be properly tensioned before
adjusting blade tracking. Make sure blade guides
and blade bearings do not interfere with the blade.
1. Open the top wheel cover. Rotate the wheel
forward by hand, and observe the position of
the blade on the wheel. It should be in the
center of the wheel.
2. If adjustment is necessary, loosen wing nut.
Tightening the tracking knob slightly will move
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.
3. After blade is tracking in the center of the
wheel, tighten the wing nut.