Makita JR3070CT Instruction Manual page 6

Speed adjusting dial (For JR3070CT)
► Fig.5: 1. Adjusting dial
The strokes 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 6 (full
speed). Turn the adjusting dial without positive stops
between 1 and 6 according to your work.
Refer to the table to select the proper speed for the
workpiece to be cut. However, the appropriate speed
may differ with the type or thickness of the workpiece. In
general, higher speeds will allow you to cut workpieces
faster but the service life of the blade will be reduced.
Number on adjusting dial
6
5
4
3
2
1
Workpiece to be cut
Wood
Autoclaved lightweight concrete
Mild steel
Aluminum
Plastics
Stainless steel
NOTE:
• If the tool is operated continuously at low
speeds for a long period of time, the operation
life of the motor will be reduced.
• The speed adjusting dial can be turned only as
far as 6 and back to 1. Do not force it past 6 or
1, or the speed adjusting function may no longer
work.
The tools equipped with electronic function are easy to
operate because of the following features.
Constant speed control
Electronic speed control for obtaining constant speed.
Possible to get fine finish, because the rotating speed is
kept constant even under load condition.
Soft start feature
Safety and soft start because of suppressed starting
shock.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Strokes per minute
2,800
2,500
1,850
1,400
1,000
950
Number on adjusting dial
6
5 - 6
3 - 4
3 - 5
1 - 4
1 - 2
Installing or removing the saw blade
CAUTION:
• Always clean out all chips or foreign matter
adhering to the blade, blade clamp and/or slider.
Failure to do so may cause insufficient tighten-
ing of the blade, resulting in a serious injury.
To install the saw blade, always make sure that the blade
clamp lever is in released position
before inserting the saw blade. If the blade clamp lever is in
fixed position, rotate the blade clamp lever in the direction of
the arrow so that it can be locked at the released positon
► Fig.6: 1. Blade clamp sleeve 2. Released position
3. Fixed position
Insert the saw blade into the blade clamp as far as it will
go. The blade clamp lever rotates and the saw blade is
fixed. Make sure that the saw blade cannot be extracted
even though you try to pull it out.
► Fig.7: 1. Blade
NOTE:
• If you do not insert the saw blade deep enough,
the saw blade may be ejected unexpectedly during
operation. This can be extremely dangerous.
If the lever is positioned inside the tool, switch on the tool
just a second to let the blade out as shown in the figure.
Switch off and unplug the tool from the mains.
To remove the saw blade, rotate the blade clamp lever in the
direction of the arrow fully. The saw blade is removed and
the blade clamp lever is fixed at the released position
► Fig.8: 1. Blade clamp lever
NOTE:
• Keep hands and fingers away from the lever
during the switching operation. Failure to do so
may cause personal injuries.
• If you remove the saw blade without rotating
the blade clamp lever fully, the lever may not be
locked in the released position
rotate the blade clamp lever fully again, then
make sure that the blade clamp lever locked at
the released position
OPERATION
► Fig.9
CAUTION:
• Always press the shoe firmly against the work-
piece during operation. If the shoe is removed or
held away from the workpiece during operation,
strong vibration and/or twisting will be produced,
causing the blade to snap dangerously.
• Always wear gloves to protect your hands from
hot flying chips when cutting metal.
• Be sure to always wear suitable eye protection
which conforms with current national standards.
• Always use a suitable coolant (cutting oil) when
cutting metal. Failure to do so will cause prema-
ture blade wear.
6 ENGLISH
on the insulation cover
.
.
. In this case,
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