Blade Tension; Adjusting Blade Tension Lever; Blade Tracking - Jet JWBS-15 Operating Instructions And Parts Manual

7.7 Blade tension

Blade tension is set with the blade tension
handwheel (L, Figure 7-10) and is performed
following blade replacement and periodically as the
blade stretches from use.
Disconnect
power source before making any adjustments.
Refer to Figures 7-9 and 7-10.
1. Place tension lever (K, Figure 7-9) in Full
Tension position.
2. Set blade tension by rotating handwheel (L)
according to the arrow directions shown in
Figure 7-10, clockwise
counterclockwise to loosen.
3. The gauge (M) indicates approximate tension
according to the width of the blade in inches.
Initially, set the blade tension to correspond to
the width of your blade.
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
tension lever to Partial Tension position – this will
prolong the blade's life.
Figure 7-9
Figure 7-10
machine from
to tighten,
17

7.8 Adjusting blade tension lever

The blade tension lever has an adjustment screw or
stop bushing that allows you to adjust how much
tension is released when lever is used.
To adjust tension lever:
1. Disconnect machine from power source.
2. Move lever to Blade Release position and
remove blade.
3. Move tension lever to Full Tension position.
4. Models JWBS-15 and JWBS-18: Turn adjust-
ment screw (Figure 7-11) until gap between
screw and wheel shaft hinge is 1/8 to 3/16 in.
Model JWBS-20: Move stop bushing (Figure 7-
12) until gap between stop bushing and wheel
shaft hinge is 1/8 to 3/16 in.
Figure 7-11
Figure 7-12

7.9 Blade tracking

Refer to Figures 7-13 and 7-14.
After proper tensioning, the blade must be tracked.
"Tracking" refers to position of blade on the wheels
while machine is in operation. Tracking should be
checked periodically, and is mandatory after every
blade change. Blade tracking is done by hand with
machine disconnected from power.
1. Disconnect machine from power source.
Blade must be correctly tensioned (sect. 7.7).
2.