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13
9. Put a 6-inch length of paper between the blade
and the wheel as shown in Figure 11. The
paper should not be cut as it passes between
the wheel shoulder and the blade.
10. Turn the single hex adjustment screw a small
amount. Repeat the insertion of the paper
between the wheel shoulder and the blade
until the paper is cut in two pieces.
Figure 11: Checking blade-to-wheel clearance
using paper strips
NOTE: You may have to repeat the check
with the paper several times before the blade
and the shoulder cuts the paper into two
pieces. Do not hurry the adjustment. Patience
and accuracy here will pay off with better,
more accurate, quieter cutting and much
longer machine and blade life.
11. When the paper is cut, turn the hex adjustment
screw slightly in the counterclockwise
direction. This assures that the blade is not
touching the shoulder of the wheel.
12. Shut off the saw.
13. Hold the hex adjustment screws with a wrench
and tighten the center locking screws. Make
sure the hex adjustment screws do not move
while tightening the center screws.
14. Install the two blade guide bearing brackets.
Position the guides so the bearings just touch
the blade.
15. Install the left blade guard.
16. Close the saw head cover. Tighten all four
knobs.
11.3 Blade guide bearing adjustment
Proper adjustment of the blade guide bearings is
critical to efficient operation of the cut-off saw. The
blade guide bearings are adjusted at the factory.
They should rarely require adjustment. When
adjustment is required, adjust immediately. Failure
to maintain proper blade adjustment may cause
serious blade damage or inaccurate cuts.
It is always better to try a new blade when cutting
performance is poor. If performance remains poor
after changing the blade, make the necessary
adjustments.
If a new blade does not correct the problem, check
the blade guides for proper spacing. For most
efficient operation and maximum accuracy, provide
0.001 inch clearance between the blade and the
guide bearings. The bearings will still turn freely
with this clearance. If the clearance is incorrect, the
blade may track off the drive wheel.
Check the blade to make sure
the welded section is the same thickness as the
rest of the blade. If the blade is thicker at the
weld, the guide bearings may be damaged.
If required, adjust the guide bearings as follows:
1. The inner guide bearing is mounted on a
concentric bushing and cannot be adjusted.
2. The outer guide bearing (closest to the
operator) is mounted on an eccentric bushing
and can be adjusted.
3. Hold the bushing with a 3/4-inch wrench and
loosen the center locking screw with an Allen
wrench (see Figure 12).
Figure 12: Adjustment of guide bearings
Figure 13: Blade-to-bearing orientation
4. Position the bearing by turning the bushing.
Set the clearance at approximately 0.001 inch.
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