Maintenance; Replacing Carbon Brushes; Optional Accessories - Makita JN3201 Instruction Manual

Cutting method (Fig. 6)
Smooth cutting is achieved by holding the tool upright and
applying gentle pressure in the cutting direction.
Apply tool oil to the punch about every 10 meters of mild
steel or stainless steel to be cut. Light oil or kerosene
should be used to keep an aluminum lubricated
continuously. Failure to lubricate aluminum in the cut will
cause chips to adhere to the tool, dulling the die and
punch and increasing load on the motor.
Cutouts (Fig. 7)
Cutouts can be done by first opening a round hole of
about 42 mm diameter or more in the material.
Cutting stainless steel (Fig. 8)
There is more vibration when cutting stainless steel than
mild steel. Less vibration and better cutting is possible by
adding another washer (standard equipment) beneath the
die.
Use the hex wrench provided to remove the two screws
and insert the washer below the die. Replace screws and
tighten securely.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• 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.
Punch & die service life
Replace or sharpen punch and die after cutting the
lengths indicated in the accompanying table. Their life, of
course, depends upon the thickness of materials cut and
lubrication conditions.
Replace after 150 m of 3.2 mm steel
Punch
Sharpen after 300 m of 3.2 mm steel
Die
006441
When cutting is poor even after replacing the punch,
sharpen the die. Grind down the dull edge shown in the
figure using a grinder. After rough-grinding the dull
portion, finish with a dressing stone. Stock removal should
be about 0.3 to 0.4 mm. (Fig. 9)
When installing ground die, a clearance of 3.5 to 4.0 mm
should be obtained by attaching one or two of the washer
provided, as shown in the figure. Failure to have the
proper clearance will result in vibration during cutting.
(Fig. 10)
CAUTION:
• Secure installing screws carefully when installing. A
loose screw can cause tool breakage during operation.
NOTE:
• The die can be sharpened two times. After two
sharpenings, it should be replaced with new one.
sheet
sheet

Replacing carbon brushes

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. (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)
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.

OPTIONAL ACCESSORIES

CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Die
• Punch
• Hex wrench
• Wrench 50
• Die height adjustment washer
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ from
country to country.
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