Jet Tools JWBS-18QT, 20QT-5, 20QT-3, JWBS-20QT Installing/Changing Blades, Blade Tension Handwheel

Installing/Changing Blades

Disconnect machine from power source. Blade teeth are sharp, use care when handling the blade. Failure to comply may cause serious injury.

1.Disconnect machine from power source.

2.Place the mode selection lever (J, Fig. 18) in the Full Release (Blade Change) position.

Note 1: When changing the position of the mode selection lever, the machine must be turned off.

Note 2:	The blade	tension	handwheel
(A, Fig. 17)	is primarily	used for	initial blade

tension adjustments (described on following page).

3.Remove the table insert (B, Fig. 17).

4.Remove the tapered pin (C, Fig. 17) by using the wrench attached together with the pin.

5. Lower the upper blade guide assembly (F, fig. 17) by loosening the knob (H, Fig. 18) and rotating the handwheel (G, Fig. 18) clock- wise.

6.Open upper and lower front doors (D, Fig. 17).

7.Carefully remove the blade from between upper and lower blade guides and upper and lower wheels; then remove blade through the table slot (E, Fig. 17).

8.Guide new blade through table slot (E, Fig. 17). Place blade in upper and lower blade guides.

Note: Make sure blade teeth point down toward table (see inset, Fig. 17), and toward the front of the saw.

Hint: If the teeth cannot be made to point down, try turning the blade inside out first, then reattempt.

9.Position blade on the middle of the upper and lower wheels.

10.Replace the table insert (B, Fig. 17) and tapered pin (C, Fig. 17).

11.Place the lever (J, Fig. 18) to the Full Tension or Partial Tension (Idle/Tracking) position.

Before operating the band saw, the new blade must be adjusted and blade guides re-adjusted. The required adjustments are contained in the sections listed below and which follow immediately:

ˆBlade Tension (page 16)

ˆBlade Tracking (page 16)

ˆUpper Bearing Adjustment (page 17)

ˆLower Bearing Adjustment (page 18)

Figure 17

Figure 18

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