Adjusting Blade Guide Bearings - Grizzly G0817 Owner's Manual

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.
There are blade guide bearings on the upper and
lower blade guide assemblies. Both adjust in the
same manner. The following instructions refer to
the upper guide bearings.
Important: Make sure the blade is tracking and
tensioned correctly before performing this proce-
dure (see Tensioning Blade on Page 28).
Tools Needed
Hex Wrench 5mm .............................................. 1
To adjust blade guides:
1.
DISCONNECT MACHINE FROM POWER!
2.
Loosen guide block adjustment cap screw
shown in Figure 46, then position guide bear-
ings just behind blade gullets, as illustrated
in Figure 47. Retighten cap screw 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 31).
Guide
Bearings
Figure 46. Upper guide bearing components
(guide post cover removed for clarity).
-32-
Qty
Guide Block
Adjustment
Cap Screw
Guide
Block
Approximately
0.016"
Blade
Gullets
Blade
Guide
Bearing
Figure 47. 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 48).
If angled out parts of the teeth contact guide
bearings during operation, they will get bent
inward, ruining the tooth set. Therefore,
the support bearing must be set to prevent
teeth from contacting guide bearings during
operation (refer to Page 31 for details).
"Tooth Set"
Wider Than
Blade Thickness
Figure 48. Illustration of blade "tooth set."
Model G0817 (Mfd. Since 05/16)
BladeThickness