Hitachi Koki C 7SB2, Handling Instructions Manual

Page: 6 / 24

6
SPECIFIC SAFETY RULES AND SYMBOLS
1. DANGER! Keep hands away from cutting area and blade. Keep your second hand on
auxiliary handle, or motor housing. If both hands are holding the saw, they cannot be
cut by the blade.
Keep your body positioned to either side of the saw blade, but not in line with the saw
blade.
KICKBACK could cause the saw to jump backwards. (See "Causes and Operator
Prevention of Kickback")
Do not reach underneath the work. The guard can not protect you from the blade
below the work.
2. Check lower guard for proper closing before each use. Do not operate saw if lower
guard does not move freely and close instantly. Never clamp or tie the lower guard
into the open position.
If saw is accidentally dropped, lower guard may be bent. Raise
the lower guard with the Retracting Handle and make sure it moves freely and does not
touch the blade or any other part, in all angles and depths of cut.
3. Check the operation and condition of the lower guard spring. If the guard and the
spring are not operating properly, they must be serviced before use. Lower guard may
operate sluggishly due to damaged parts, gummy deposits, or a buildup of debris.
4. Lower guard should be retracted manually only for special cuts such as “Pocket Cuts”
and “Compound Cuts.” Raise lower guard by Retracting Handle. As soon as blade
enters the material, lower guard must be released.
For all other sawing, the lower
guard should operate automatically.
5. Always observe that the lower guard is covering the blade before placing saw down
on bench or floor. An unprotected, coasting blade will cause the saw to walk backwards,
cutting whatever is in its path. Be aware of the time it takes for the blade to stop after
switch is released.
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 or its own cord. 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 operator.