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e. Backing up the saw to clear blade can lead totwist.
4. MATERIALS THAT REQUIRE EXTRA ATTENTION
a. Wet timber
b. Green timber(material freshly cut or not kiln dried)
c. Pressure treated timber(material treated with
preservatives or anti-rot chemicals)
5. USE OF DULL OR DIRTY BLADES
a. Dull blades cause increased loading of the saw.To
compensate, an operator will usually push harder
which further loads the unit and promotes twisting
of the blade in the kerf.Worn blades may also have
insufficient body clearance which increases the
chance of binding and increasedloading.
6. LIFTING THE SAW WHEN MAKING A BEVEL CUT
a. Bevel cuts require special operator attention to proper
cutting techniques – especially guidance of the
saw.Both blade angle to the shoe and greater blade
surface in the material increase the chance for binding
and misalignment(twist) tooccur.
7. RESTARTING A CUT WITH THE BLADE TEETH
JAMMED AGAINST THE MATERIAL
a. The saw should be brought up to full operating speed
before starting a cut or restarting a cut after the unit
has been stopped with the blade in the kerf.Failure to
do so can cause stalling andkickback.
Any other conditions which could result in pinching,
binding, twisting, or misalignment of the blade could cause
kickback.Refer to the sections Further Safety Instructions
for All Saws and Blades for procedures and techniques that
will minimize the occurrence ofkickback.
Depth of Cut Adjustment(Fig.G, H)
Maximum depth of cut is 2.5" (64mm)
1. Raise the depth adjustment lever
4
toloosen.
2. To obtain the correct depth of cut, align the appropriate
mark on the depth adjustment strap
20
with notch
19
on the upper bladeguard.
3. Tighten the depth adjustmentlever.
4. For the most efficient cutting action using a carbide
tipped saw blade, set the depth adjustment so that
about one half of a tooth projects below the surface of
the wood to becut.
5. A method of checking for the correct cutting depth
is shown in FigureH.Lay a piece of the material you
plan to cut along the side of the blade, as shown in the
figure, and observe how much tooth projects beyond
thematerial.
Adjusting Depth Adjustment
Lever(Fig.G)
It may be desirable to adjust the depth adjustment lever
4
.It
may loosen in time and hit the shoe beforetighten ing.
To Tighten the Lever:
1. Hold depth adjustment lever
4
and loosen the
locknut
18
.
7-1/4" (184mm) Diameter
Application Teeth
Rip 24
General Purpose 36
Finish 60
If you need assistance regarding blades, please contact your
local
DeWALTdealer.
Kickback
Kickback is a sudden reaction to a pinched, bound or
misaligned saw blade, causing an uncontrolled saw to lift
up and out of the workpiece toward the operator.When the
blade is pinched or bound tightly by the kerf closing down,
the blade stalls and the motor reaction drives the unit rapidly
back toward the operator.If the blade becomes twisted or
misaligned in the cut, the teeth at the back edge of the blade
can dig into the top surface of the wood causing the blade to
climb out of the kerf and jump back toward theoperator.
Kickback is more likely to occur when any of the following
conditionsexists.
1. IMPROPER WORKPIECE SUPPORT
a. Sagging or improper lifting of the cut off piece can
cause pinching of the blade and lead tokickback.
b. Cutting through material supported at the outer ends
only can cause kickback.As the material weakens
it sags, closing down the kerf and pinching the
blade(Fig.N).
c. Cutting off a cantilevered or overhanging piece of
material from the bottom up in a vertical direction
can cause kickback.The falling cut off piece can pinch
theblade.
d. Cutting off long narrow strips(as in ripping) can cause
kickback.The cut off strip can sag or twist closing the
kerf and pinching theblade.
e. Snagging the lower guard on a surface below the
material being cut momentarily reduces operator
control.The saw can lift partially out of the cut
increasing the chance of bladetwist.
2. IMPROPER DEPTH OF CUT SETTING ON SAW
a. To make the most efficient cut, the blade should
protrude only far enough to expose one-half of a
tooth as shown in FigureH.This allows the shoe
to support the blade and minimizes twisting and
pinching in the material.See the section titled Depth
of CutAdjustment.
3. BLADE TWISTINGMISALIGNMENT IN CUT
a. Pushing harder to cut through a knot, a nail or a hard
grain area can cause the blade totwist.
b. Trying to turn the saw in the cut(trying to get back on
the marked line) can cause bladetwist.
c. Overreaching or operating the saw with poor body
control(out of balance), can result in twisting
theblade.
d. Changing hand grip or body position while cutting
can result in bladetwist.