Jet JWB-10, Инструкция по эксплуатации и каталог запасных частей, Страница: 11 / 24

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9.4 Adjusting blade tension
Refer to Figure 12:
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 (see
sect. 9.7 ).
1. Disconnect machine from power source.
2. Apply just enough tension to take slack out of
blade.
3. Turn one wheel a few times to allow blade to
position itself in center of tire.
4. Note: If blade does not center, see sect. 9.5,
Adjusting blade tracking .
5. 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).
6. 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.
Figure 12
9.5 Adjusting blade tracking
Refer to Figure 12:
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.
The blade must be slightly tensioned (see sect. 9.4 )
before adjusting blade tracking. Make sure blade
guides and bearings (M,N, Figure 11) do not
interfere with blade. If blade tracking is required,
blade guide adjustment is described in
sect. 9.7.
1. Open upper and lower doors. Rotate upper
wheel forward by hand, and observe position of
blade on wheel through the window (S, Figure
12). Blade should be in the center of the wheel.
If adjustment is necessary:
2. Loosen handle (T) and make adjustment with
tracking knob (U) while rotating wheel by hand.
3. 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.
4. After blade is tracking in the center of the wheel,
tighten handle (T).
9.6 Upper blade guide positioning
Refer to Figure 13:
The upper blade guide assembly (W) should be
adjusted to just above the material being cut. To
adjust:
Loosen lock knob (V) and raise or lower upper blade
guide assembly (W) by turning height adjustment
knob (X).
Figure 13
9.7 Blade guide adjustment
Overview
The blade guide assembly consists of two roller
guides (bearings) positioned on each side of the
blade to provide blade stability. A third guide (thrust
bearing) is positioned behind the blade to provide
blade support.