Maintenance; Operation; Replacing Carbon Brushes - Makita BJS160 Instruction Manual

− Accidental re-start preventive function
− Even if the battery cartridge is inserted on the
tool with the slide switch in the "I (ON)"
position, the tool does not start. At this time,
the lamp flickers slowly and this shows that
the accidental re-start preventive function is at
work.
− To start the tool, first slide the slide switch
toward the "O (OFF)" position and then slide it
toward the "I (ON)" position.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before carrying out
any work on the tool.
Adjusting the blade clearance
For BJS160 and BJS161 only
Adjust the clearance between the side blade and the
center blade according to the thickness of the workpiece.
Fig.4
First use a hex wrench to loosen the screw.
Fig.5
Then use the hex wrench to adjust the clearance by
tightening or loosening the bolt. There may be a slight
difference between clearance of both sides of the center
blade.
Check the smaller clearance with the thickness gauge
and adjust it.
When using the thickness gauge to adjust the blade
clearance, refer to the table.
Workpiece thickness (mm)
Less than 0.8
0.8 - 1.3
More than 1.3
006428
After adjusting the clearance, tighten the screw securely.
Storing hex wrench
Fig.6
Store the hex wrench as shown in the figure when not in
use.

OPERATION

Lubrication
Fig.7
Before operation, lubricate the contact point of the center
blade and the pin. To keep good cutting performance,
also use a cutting lubricant from time to time during
operation.
OPERATION
Fig.8
Turn the tool on and set front ends of the side blades on
the workpiece. Now simply move the tool forward,
Marking on thickness gauge
0.5
1.0
1.5
keeping the side blades flush with the workpiece surface.
Fig.9
CAUTION:
When cutting a small portion of the workpiece, you
•
may have difficulty completing the end of the cut. In
that case, try to cut it again, pulling the workpiece
back slightly.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before attempting to
perform inspection or maintenance.
NOTICE:
Never use gasoline, benzine, thinner, alcohol or the
•
like. Discoloration, deformation or cracks may
result.
The tool and its air vents have to be kept clean. Regularly
clean the tool's air vents or whenever the vents start to
become obstructed.

Replacing carbon brushes

Fig.10
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Insert the top end of slotted bit screwdriver into the notch
in the tool and remove the holder cap cover by lifting it
up.
Fig.11
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
Fig.12
Reinstall the holder cap cover on the tool.
Replacing blades
The service life of the blades varies in terms of the
workpiece to be cut. The following reference tables
indicate the approximate service life of the blades.
When the blades become dull, ask Makita Authorized
Service Centers to replace the blades.
For BJS160 and BJS161
Material
Mild steel plate
(SPCC)
Stainless steel plate
(SUS304)
Aluminum plate
(A-5052)
010094
6
Cutting thickness Life of blades
(mm)
1.6 200
1.2 150
2.5 400
(m)