Woodstock W1820 - Manual (Page 70)

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The blade guard spreader and riving knife must be aligned
with the blade when installed. If the spreader/riving knife
is not aligned with the blade, then the workpiece will
before forced sideways during the cut, which will increase
the risk of kickback.
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Straightedge .....................................................1
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(% DISCONNECT THE SAW FROM POWER!
)% Raise the saw blade to the maximum height so you
have easy working access.
*% Place the straightedge alternately against the top
and bottom of blade and spreader/riving knife, as
shown in
=`^li\(''. The spreader/riving knife
should be parallel with the blade along its length at
both positions, and it should be in the "Alignment
Zone," as shown in
=`^li\('(.
— If the spreader/riving knife is not parallel with the
blade and inside the alignment zone, then it needs
to be adjusted. Proceed to
8[aljk`e^8c`^ed\ek
instructions.
— If the spreader/riving knife is not parallel with the
blade at either the top or bottom, it may be bent.
+% Remove the spreader/riving knife and place it on a
flat surface and check to see if the spreader/riving
knife lays evenly along its length.
— If the spreader/riving knife does not lay evenly,
proceed to 8[aljk`e^9\ekJgi\X[\i&I`m`e^Be`]\
on GX^\-0.
=`^li\('(% Spreader/riving knife
alignment zone.
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=`^li\(''% Checking top and bottom
riving knife parallelism with blade.
Table
Riving
Knife
Top Alignment
Bottom Alignment