Manual Makita 4157 KB (page 7 of 13) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Spanish, Norwegian, Finnish)

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Adjusting for accuracy of 90° cut (vertical cut)

(Fig. 7 & 8)

This adjustment has been made at the factory. But if it is

off, adjust the adjusting screw with a hex wrench while

squaring the blade with the base using a triangular rule,

try square, etc.

Sighting (Fig. 9)

For straight cuts, align the right edge of the notch in the

front of the base with your cutting line on the workpiece.

For 45° bevel cuts, align the left edge of the notch in the

front of the base with it.

Switch action (Fig. 10)

CAUTION:

Before plugging in the tool, always check to see that the

switch trigger actuates properly and returns to the “OFF”

position when released.

To prevent the switch trigger from being accidentally

pulled, a lock-off button is provided. To start the tool,

depress the lock-off button and pull the switch trigger.

Release the switch trigger to stop.

Operation (Fig. 11)

Grasp the rear handle with your right hand, the front grip

with your left. Set the base plate on the workpiece to be

cut without the wheel making any contact. Then turn the

tool on and wait until the wheel attains full speed. Now

simply move the tool forward over the workpiece surface,

keeping it flat and advancing smoothly until the cutting is

completed. To get clean cuts, keep your cutting line

straight and your speed of advance uniform. Never use

water when cutting. Water may enter the tool, causing an

electric shock hazard.

CAUTION:

• Be sure to move the tool forward in a straight line and

gently. Forcing and exerting excessive pressure or

allowing the wheel to bend, pinch or twist in the cut can

cause overheating of the motor and dangerous kick-

back of the tool.

• Since excessive cutting may cause overload of the

motor, the depth of cut should not be more than 20 mm

at a pass. When you wish to cut more than 20 mm

deep, make a couple of passes with progressively

deeper settings.

Rip fence (guide rule) (Optional accessory)

(Fig. 12)

The handy rip fence (guide rule) allows you to do extra-

accurate straight cuts. Simply slide the rip fence up

snugly against the side of the workpiece and secure it in

position with the clamp screw on the front of the base. It

also makes repeated cuts of uniform width possible.

Dust extraction (Fig. 13)

This tool equipped with a dust box to collect dust and cut

chips. When the dust box is about two thirds full, empty

its contents. To do so, press the lever to unlock the dust

cap. Then open it. Cleaner cutting operations can be per-

formed by connecting this tool to a Makita vacuum

cleaner. Remove the rubber cap from the dust cap and

connect the vacuum cleaner hose to the dust cap.

MAINTENANCE

CAUTION:

Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Replacement of carbon brushes (Fig. 14 &15)

Replace carbon brushes when they are worn down to the

limit mark. Both identical carbon brushes should be

replaced at the same time.

Dressing diamond wheel

If the cutting action of the diamond wheel begins to

diminish, use an old discarded coarse grit bench grinder

wheel or concrete block to dress the diamond wheel. To

do this, tightly secure the bench grinder wheel or con-

crete block and cut in it.

To maintain product safety and reliability, repairs, mainte-

nance or adjustment should be carried out by a Makita

Authorized Service Center.

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.

• Hex wrench 6

• Rip fence set (Guide rule)

• Diamond wheel

Diameter Hole diameter Blade

180 mm 22.23 mm Dry type

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Makita 4157 KB Manual

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