Jet Tools JWBS-18QT, 20QT-5, 20QT-3 Changing the Blade Speed, Belt Tension, Motor C, Handle a

Changing the Blade Speed

Disconnect machine from power source before making any adjustments.

The JWBS-18QT and -20QT band saw has two blade-speed options which is determined by the position of the pulley drive belt. Refer to the Specifications section (page 6) for speed specs.

To change the blade speed (while referring to Figure 25):

1.	Loosen the lock handle (A) that secures the
	motor (C).
2.	Release belt tension by pulling handle (B) up	Figure 25
	which raises the motor, then tighten lock

handle (A).

3.Open the lower wheel door (C, Fig. 27).

4.Referring to Figure 26:

For higher blade-speed– place the poly V-belt in the A position on the spindle and motor pulleys as shown in Figure 26.

For lower blade-speed– place the poly V-belt in the B position on the spindle and motor pulleys.

After repositioning the belt:

5.Unlock lock handle (A, Fig. 25). Apply belt tension by slightly pushing handle (B, Fig. 25) down.

6.Tighten the lock handle (A, Fig, 25) to secure the motor (C, Fig. 25).

Belt Tension

The drive belt and pulleys are properly adjusted at the factory. However, belt tension should be occasionally checked. The belt will need to be re- tensioned after belt replacement.

Disconnect machine from power source before making any adjustments.

Referring to Figure 25:

1.Loosen the lock handle (A) that secures the motor (C).

2.Set the belt tension by lightly pressing down on the handle (B).

The weight of the motor should put enough tension on the belt. You just want to push down lightly to take up any slack.

20

Figure 26

3. Tighten the lock handle (A).

Note: A new belt may stretch slightly during the “breaking in” process, and the tension may occasionally need to be checked and adjusted.

Place the mode selection lever (J, Fig. 18) in the Partial Tension position when the machine is not in use.