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Hitachi C18DBL Manual

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English
d) Always observe that the lower guard is covering the
blade before placing saw down on bench or fl oor.
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.
ADDITIONAL SAFETY WARNINGS
1. Do not allow foreign matter to enter the hole for
connecting the rechargeable battery.
2. Never disassemble the rechargeable battery and
charger.
3. Never short-circuit the rechargeable battery.
Shortcircuiting the battery will cause a great electric
current and overheat. It results in burn or damage to the
battery.
4. Do not dispose of the battery in fi re. If the battery is burnt,
it may explode.
5. When using this unit continuously, the unit may overheat,
leading to damage in the motor and switch. Please leave
it without using it for approximately 15 minutes.
6. Do not insert object into the air ventilation slots of the
charger. Inserting metal objects or infl ammables into the
charger air ventilation slots will result in electrical shock
hazard or damaged charger.
7. Using an exhausted battery will damage the charger.
8. Bring the battery to the shop from which it was purchased
as soon as the post-charging battery life becomes too
short for practical use. Do not dispose of the exhausted
battery.
9. Wear earplugs to protect your ears during operation.
10. Use only blade diameter specifi ed on the machine.
11. Do not use any abrasive wheel.
12. Do not use saw blades which are deformed or cracked.
13. Do not use saw blades made of high speed steel.
14. Do not use saw blades which do not comply with the
characteristics specifi ed in these instructions.
15. Do not stop the saw blades by lateral pressure on the
disc.
16. Always keep the saw blades sharp.
17. Ensure that the lower guard moves smoothly and freely.
18. Never use the circular saw with its lower guard fi xed in
the open position.
19. Ensure that the retraction mechanism of the guard
system operates correctly.
20. Never operate the circular saw with the saw blade turned
upward or to the side.
21. Ensure that the material is free of foreign matters such as
nails.
22. The saw blades range should be 125 mm.
23. Pull out battery before carrying out any adjustment,
servicing or maintenance.
24. Be careful of brake kickback.
This circular saw features an electric brake that functions
when the switch is released. As there is some kickback
when the brake functions, be sure to hold the main body
securely.
25. Ensure that the power source to be utilized conforms
to the power requirements specifi ed on the product
nameplate.
26. Ensure that the switch is in the OFF position. If the battery
installed to power tool while the switch is in the ON
position, the power tool will start operating immediately,
which could cause a serious accident.
27. When the work area is removed from the power source,
use an extension cord of suffi cient thickness and rated
capacity. The extension cord should be kept as short as
practicable.
28. Avoid cutting in the state where the base has fl oated up
from the material.
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.
29. Support large panels to minimize the risk of blade
pinching and KICKBACK. Large panels tend to sag
under their own weight (Fig. 3). 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. 2.
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 .
30. 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.
NEVER place your hand or fi ngers behind the saw
(Fig. 4). If kickback occurs, the saw could easily jump
backwards over your hand, possibly causing severe
injury.
31. WARNING: It is important to support the work piece
properly and to hold the saw fi rmly to prevent loss
of control which could cause personal injury. Fig. 5
illustrates typical hand support of the saw.
32. Place the wider portion of the saw base on that part
of the work piece which is solidly supported, not on
the section that will fall off when the cut is made. As
examples, Fig. 6 illustrates the RIGHT way to cut off the
end of board, and Fig. 7 the WRONG way. If the work
piece is short or small, clamp is down.
DON’T TRY TO HOLD SHORT PLACES BY HAND!
33. Never attempt to saw with the circular saw held upside
down in a vise. This is extremely dangerous and can
lead to serious accidents (Fig. 8).
34. Should lever remain loosened, it will create a very
hazardous situation. Always thoroughly clamp it.
(Fig. 12)
35. Prior to cutting operation, make sure the material you
are going to cut. If the material to be cut is expected to
generate harmful / toxic dusts, make sure the dust bag
or appropriate dust extraction system is connected with
dust outlet tightly.
○ Before starting to saw, confi rm that the saw blade
has attained full-speed revolution.
○ Should the saw blade stop or make an abnormal
noise while operating, promptly turn OFF the switch.
○ Using the circular saw with the saw blade facing
upwards or sideways is very hazardous. Such
uncommon applications should be avoided.
○ When cutting materials, always wear protective
glasses.
○ When fi nished with a job, pull out the battery.
36. After having attached the saw blade, reconfi rm that the
lock lever is fi rmly secured in the prescribed position.
37. Do not expose directly your eye to the light by looking
into the light.
If your eye is continuously exposed to the light, your eye
will be hurt.
CAUTION ON LITHIUM-ION BATTERY
To extend the lifetime, the lithium-ion battery equips with the
protection function to stop the output.
In the cases of 1 to 3 described below, when using this
product, even if you are pulling the switch, the motor may
stop. This is not the trouble but the result of protection
function.
1. When the battery power remaining runs out, the motor
stops.
In such a case, charge it up immediately.
0000Book_C18DBL.indb 40000Book_C18DBL.indb 4 2017/02/03 14:43:172017/02/03 14:43:17
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