Model G0948 (Mfd. Since 08/21)
-25-
Adjusting Blade
Guide Bearings
The blade guide bearings can be adjusted left-
to-right, as well as front-to-back, relative to the
blade. Properly adjusted blade guide bearings
provide side-to-side support, from just behind the
gullets to the back of the blade, to help keep the
blade straight while cutting.
IMPORTANT: Make sure the blade is tracking
(refer to
Initial Blade Tracking on Page 20) and
tensioned (see
Tensioning Blade on Page 22)
correctly before performing this procedure.
Blade
Guide
Bearing
(1 of 2)
Blade
Gullets
Approximately
0.016"
Figure 28. Blade guide bearing positioned just
behind blade gullets.
Note: With wider blades, it may not be possi-
ble to bring the guide bearings just behind the
blade gullets. Position them as far forward as
possible without allowing the guide bearing
housing to touch the back of the blade.
Blade teeth are angled out slightly, protrud-
ing wider than the blade thickness; this is
known as blade "tooth set" (see Figure 29).
If teeth contact guide bearings during oper-
ation, damage may occur. Therefore, the
support bearing must be set to prevent
teeth from contacting guide bearings during
operation (refer to Page 24 for details).
“Tooth Set”
Wider Than
Blade Thickness
BladeThickness
Figure 29. Illustration of blade "tooth set".
Tool(s) Needed
Qty
Hex Wrench 4mm .............................................. 1
Feeler Gauge 0.016" .......................................... 1
Adjusting Upper Blade Guide Bearings
To adjust upper blade guide bearings:
1. DISCONNECT MACHINE FROM POWER!
2. Loosen guide block adjustment knob shown
in
Figure 27, then laterally position guide
bearings just behind blade gullets, as illus-
trated in
Figure 28, then tighten knob to
secure setting.
Note: The guide bearings should be posi-
tioned behind the gullets a distance equal to
that of the support bearing behind the blade
(see
Page 24 for reference).
Figure 27. Upper guide bearing components.
Guide Block
Adjustment Knob
Guide Bearing
Cap Screw
(1 of 2)
Summary of Contents for G0948
Page 68: ......
