Hitachi C18DLP4 - 18V Li-Ion 6-1/2" Circular Saw Safety Instructions And Instruction Manual page 5

6. NEVER hold piece being cut in your hands or
across your leg. It is important to support the work
properly to minimize body exposure, blade
binding, or loss of control.
7. Hold tool by insulated gripping surfaces when
performing an operation where the cutting tool
may contact hidden wiring. Contact with a "live"
wire will also make exposed metal parts of the tool
"live" and shock the operator.
8. When ripping always use a rip fence or straight
edge guide. This improves the accuracy of cut and
reduces the chance for blade binding.
9. Always use blades with correct size and shape
(diamond vs. round) arbor holes. Blades that do
not match the mounting hardware of the saw will
run eccentrically, causing loss of control.
10. Never use damaged or incorrect blade washers
or bolts. The blade washers and bolt were specially
designed for your saw, for optimum performance
and safety of operation.
11. Causes and Operator Prevention of 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 the
operator.
Kickback is the result of tool misuse and/or
incorrect operating procedures or conditions and
can be avoided by taking proper precautions as
given below:
12. Maintain a firm grip on the saw and position your
body and arm in a way that allows you to resist
KICKBACK forces. KICKBACK forces can be
controlled by the operator, if proper precautions
are taken.
13. When blade is binding, or when interrupting a cut
for any reason, release the trigger and hold the saw
motionless in the material until the blade comes
to a complete stop. Never attempt to remove the
saw from the work or pull the saw backward while
the blade is in motion or KICKBACK may occur.
Investigate and take corrective actions to eliminate
the cause of blade binding.
14. When restarting a saw in the workpiece, center
the saw blade in the kerf and check that teeth are
not engaged into the material. If saw blade is
binding, it may walk up or KICKBACK from the
workpiece as the saw is restarted.
15. Support large panels to minimize the risk of blade
pinching and KICKBACK. Large panels tend to sag
under their own weight. Supports must be placed
under the panel on both sides, near the line of cut
and near the edge of the panel as shown in Fig. 1.
To minimize the risk of blade pinching and
kickback. When cutting operation requires the
resting of the saw on the work piece, the saw shall
be rested on the larger portion and the smaller
piece cut off.
To avoid kickback, do support board
or panel near the cut.
Don't support board or panel
away from the cut.
16. Do not use dull or damaged blade. Unsharpened
or improperly set blades produce narrow kerf
causing excessive friction, blade binding, and
KICKBACK.
17. Blade depth and bevel adjusting locking levers
must be tight and secure before making cut. If
blade adjustment shifts while cutting, it will cause
binding and KICKBACK.
18. Use extra caution when making a "Pocket Cut"
into existing walls or other blind areas. The
protruding blade may cut objects that can cause
KICKBACK.
19. Hold tools by insulated gripping surfaces when
performing an operation where the cutting tool
may contact hidden wiring or its own cord. Contact
with a "live" wire will make exposed metal parts
of the tool "live" and shock the operator.
20. Never touch moving parts.
Never place your hands, fingers or other body parts
near the tool's moving parts.
English
Fig. 1
Fig. 2
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