Dewalt DCS390L Instruction Manual - Page 16

Restarting A Cut With The Blade Teeth Jammed

Get Dewalt DCS390L PDF manuals and user guides View all Dewalt DCS390L manuals
Add to My Manuals
Save this manual to your list of manuals

Page 16 highlights

English 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 the blade. 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 the blade. 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 blade twist. 2. IMPROPER DEPTH OF CUT SETTING ON SAW To make the most efficient cut, the blade should protrude only far enough to expose 1/2 of a tooth as shown in Figure 7. This allows the shoe to support the blade and minimizes twisting and pinching in the material. See the section titled "Cutting Depth Adjustment." 3. BLADE TWISTING (MISALIGNMENT IN CUT) A. Pushing harder to cut through a knot, a nail, or a hard grain area can cause the blade to twist. B. Trying to turn the saw in the cut (trying to get back on the marked line) can cause blade twist C. Over-reaching or operating the saw with poor body control (out of balance), can result in twisting the blade. D. Changing hand grip or body position while cutting can result in blade twist. E. Backing up the saw to clear blade can lead to twist. 4. MATERIALS THAT REQUIRE EXTRA ATTENTION A. Wet lumber B. Green lumber (material freshly cut or not kiln dried) C. Pressure treated lumber (material treated with preservatives or anti-rot chemicals) 5. USE OF DULL OR DIRTY BLADES 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 increased loading. 6. LIFTING THE SAW WHEN MAKING BEVEL CUT 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) to occur. 7. RESTARTING A CUT WITH THE BLADE TEETH JAMMED AGAINST THE MATERIAL 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 and kickback. Any other conditions which could result in pinching, binding, twisting, or misalignment of the blade could cause kickback. Refer to the sections on adjustments and operation for procedures and techniques that will minimize the occurrence of kickback. FIG. 6 FIG. 7 J D 14

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
14
English
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 the blade.
D.
Cutting off long narrow strips (as in ripping) can cause kick-
back. The cut off strip can sag or twist closing the kerf and
pinching the blade.
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 blade
twist.
2. IMPROPER DEPTH OF CUT SETTING ON SAW
To make the most efficient cut, the blade should protrude only
far enough to expose 1/2 of a tooth as shown in Figure 7. This
allows the shoe to support the blade and minimizes twisting and
pinching in the material. See the section titled “Cutting Depth
Adjustment.”
3. BLADE TWISTING (MISALIGNMENT IN CUT)
A.
Pushing harder to cut through a knot, a nail, or a hard grain
area can cause the blade to twist.
B.
Trying to turn the saw in the cut (trying to get back on the
marked line) can cause blade twist
C.
Over-reaching or operating the saw with poor body control
(out of balance), can result in twisting the blade.
D.
Changing hand grip or body position while cutting can result
in blade twist.
E.
Backing up the saw to clear blade can lead to twist.
4. MATERIALS THAT REQUIRE EXTRA ATTENTION
A. Wet lumber
B. Green lumber (material freshly cut or not kiln dried)
C.
Pressure treated lumber (material treated with preservatives
or anti-rot chemicals)
5. USE OF DULL OR DIRTY BLADES
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 increased loading.
6. LIFTING THE SAW WHEN MAKING BEVEL CUT
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) to occur.
7. RESTARTING A CUT WITH THE BLADE TEETH JAMMED
AGAINST THE MATERIAL
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 and
kickback.
Any other conditions which could result in pinching, binding, twisting,
or misalignment of the blade could cause kickback. Refer to the
sections on adjustments and operation for procedures and techniques
that will minimize the occurrence of kickback.
D
FIG. 6
FIG. 7
J