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5
4.
Wear a hard hat (safety helmet), safety glasses
and/or face shield. Ordinary eye or sun
glasses are NOT safety glasses. It is also
highly recommended that you wear a dust
mask and thickly padded gloves.
5.
Be sure the bit is secured in place before
operation.
6.
Under normal operation, the tool is designed
to produce vibration. The screws can come
loose easily, causing a breakdown or accident.
Check tightness of screws carefully before
operation.
7.
In cold weather or when the tool has not been
used for a long time, let the tool warm up for a
while by operating it under no load. This will
loosen up the lubrication. Without proper
warm-up, hammering operation is difficult.
8.
Always be sure you have a firm footing.
Be sure no one is below when using the tool in
high locations.
9.
Hold the tool firmly with both hands.
10.
Keep hands away from moving parts.
11.
Do not leave the tool running. Operate the tool
only when hand-held.
12.
Do not point the tool at any one in the area
when operating. The bit could fly out and
injure someone seriously.
13.
Do not touch the bit or parts close to the bit
immediately after operation; they may be
extremely hot and could burn your skin.
14.
Do not operate the tool at no-load
unnecessarily.
15.
Some material contains chemicals which may
be toxic. Take caution to prevent dust
inhalation and skin contact. Follow material
supplier safety data.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to safety rules for the subject product.
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.
FUNCTIONAL DESCRIPTION
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
the tool.
Switch action
Fig.1
CAUTION:
•
Before plugging in the tool, always check to see
that the tool is switched off.
•
Switch can be locked in "ON" position for ease of
operator comfort during extended use. Apply
caution when locking tool in "ON" position and
maintain firm grasp on tool.
To start the tool, push the switch lever "ON (I)" on the left
side of the tool. To stop the tool, push the switch lever
"OFF (O)" on the right side of the tool.
Speed change
Fig.2
The blows per minute can be adjusted just by turning the
adjusting dial. This can be done even while the tool is
running. The dial is marked 1 (lowest speed) to 5 (full
speed).
Refer to the table below for the relationship between the
number settings on the adjusting dial and the blows per
minute.
Numb
er
on
a
djus
t
ing di
a
l
B
lows p
er
minu
te
5
4
3
2
1
1450
1350
1150
800
730
010281
For model HM1317C,HM1317CB only
NOTE:
•
Blows at no load per minute becomes smaller than
those on load in order to reduce vibration under no
load, but this does not show trouble. Once
operation starts with a bit against concrete, blows
per minute increase and get to the numbers as
shown in the table. When temperature is low and
there is less fluidity in grease, the tool may not
have this function even with the motor rotating.
CAUTION:
•
The adjusting dial can be turned only as far as 5
and back to 1. Do not force it past 5 or 1, or the
speed adjusting function may no longer work.
Indicator lamp
Fig.3
The green power-ON indicator lamp lights up when the
tool is plugged. If the indicator lamp does not light up,
the mains cord or the controller may be malfunction. The
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