-27-
Model W1878 (For Machines Mfd. Since 4/21)
SE
TU
P
Adjusting.Blade.Guide.
Bearings
Properly adjusting the blade guides provides side-to-side
support 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. To access the lower guide bearings, you must
open the lower wheel guard (see
Page.5
for reference).
IMPORTANT:
Make sure the blade is tracking and
tensioned correctly before performing this procedure (see
Tensioning.Blade
on
Page
24
).
Tool.Needed.
Qty
Hex Wrench 4mm ...............................................1
To.adjust.blade.guides,.do.these.steps:
1.
DISCONNECT
MACHINE FROM POWER!
2.
Loosen
guide block cap screw shown in
Figure.27
,
.
then laterally position guide bearings just behind
blade gullets, as illustrated in
Figure.28
, then
re-tighten cap screw to secure setting.
Blade
Guide
Bearing
Blade
Gullets
Approximately
0.016"
Figure.28.
Blade guide bearing positioned
just behind blade gullets.
Note:.
With wider blades, it may not be possible
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.
“Tooth Set”
Wider Than
Blade Thickness
Blade
Thickness
Figure.29.
Illustration of blade "tooth set".
Figure.27.
Upper guide bearing
components.
Guide Bearing
(1 of 2)
Guide Block
Cap Screw
Guide Bearing
Adjustment
Cap Screws
Blade.teeth.are.angled.out.slightly,.protruding.wider.
than.the.blade.thickness;.this.is.known.as.blade.
"tooth.set".(see.Figure.29)..If.teeth.contact.guide.
bearings.during.operation,.damage.may.occur..
Therefore,.the.support.bearing.must.be.set.to.
prevent.teeth.from.contacting.guide.bearings.during.
operation.(refer.to.Page.26.for.details).
Содержание W1878
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