Makita JN3201 instruction manual Maintenance, Punch & die service life, Replacing carbon brushes

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:

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CAUTION:

1.3.5 -4.0 mm (1/8" - 5/32")

2.Die

3.Washer

•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.

Punch	Replace after 150 m (492 ft.) of 3.2 mm (1/8") steel sheet
Die	Sharpen after 300 m (984 ft.) of 3.2 mm (1/8") steel sheet

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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 (1/64").

•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.

Replacing carbon brushes

1. Limit mark

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001145

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.

1.	Screwdriver
2.	Brush holder

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1.Grind/sharpen; 0.3 - 0.4 mm (1/64")

2.Remove dull portion

1	cap
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Use a screwdriver to remove the brush holder caps. Take out the worn carbon brushes, insert the new ones

When installing ground die, a clearance of 3.5 to 4.0

mm(1/8" to 5/32") 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.

and secure the brush holder caps.

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

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