Replacing the Drive Wheel

Pivot

Adjustment Nuts

Counterbalance

Spring

Threaded

Rod

Figure 16: Counterbalance spring adjustment

used to adjust the amount of down force the saw head puts on the workpiece when the feed rate control valve is fully open.

1.Raise the saw arm to its full upright position and lock it in position.

2.To adjust the tension on the spring, loosen the two nuts on the threaded rod of the spring pivot post. Adjust the tension as required.

3.Tighten the two nuts against the pivot post.

4.The saw can now be returned to service.

1.Remove the blade (see Changing Blades).

2.Remove the screw, spring washer, and washer from the speed reducer shaft.

3.Pull the wheel from the speed reducer shaft. Re- move the drive key from the speed reducer shaft.

4.Inspection: Examine drive edge and shoulder of the wheel for damage. Replace the wheel if dam- aged.

5.Install the key in the keyway in the speed reducer shaft. Align the keyway in the wheel with the key in the speed reducer shaft. Reinstall the wheel on the speed reducer shaft.

6.Install the screw, spring washer and washer in the end of the speed reducer shaft.

7.Install the blade (see Changing Blades).

Replacing Idler Wheel or Idler Bearing

1.Remove the saw blade (see Changing Blades).

2.Remove the screw, spring washer, and washer from the idler shaft.

3.Remove the idler wheel. Remove the bearing from the idler wheel.

4.Inspection: Examine the drive edge and shoulder of the idler wheel for damage. Replace the wheel if

damaged.

5.Inspect bearings for damage and smooth opera- tion, Replace if faulty.

6.Install the bearing in the idler wheel. Install the idler wheel on the idler shaft.

7.Install the screw, spring washer and washer in the idler shaft.

8.Install the blade (see Changing blades).

Adjusting the Blade Guides

The cut-off saw has adjustable blade guide supports (see figure 17). The blade guide supports allow you to set the blade guides for varying widths of workpieces.

To make accurate cuts and prolong blade life, the blade guide supports should be set to just clear the workpiece to be cut.

Blade Guide

Supports

Figure 17: Blade guide supports

1.Loosen the knob on the blade guide support and slide the guide left or right as required. Repeat for the other blade guide.

2.Set the blade guide supports as required to accom- modate the width/diameter of the workpiece. The blade guides should be positioned so the guides do not contact the workpiece as the saw head moves downward through the workpiece.

Replacement of Carbide Blade Guide