Manual Makita SG1251 (page 8 of 60) (English, German, Dutch, Danish, French, Italian, Portuguese, Turkish, Spanish)

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Additional Safety Warnings:

19. Never attempt to cut with the tool held upside

down in a vise. This can lead to serious

accidents, because it is extremely dangerous.

20. Some material contains chemicals which may be

toxic. Take caution to prevent dust inhalation

and skin contact. Follow material supplier safety

data.

21. Store wheels as per manufacturer

recommendations. Improper storage may

damage the wheels.

SAVE THESE INSTRUCTIONS.

WARNING:

DO NOT let comfort or familiarity with product

(gained from repeated use) replace strict adherence

to safety rules for the subject product. MISUSE or

failure to follow the safety rules stated in this

instruction manual may cause serious personal

injury.

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the

tool.

Shaft lock (Fig. 1)

CAUTION:

• Never actuate the shaft lock when the spindle is

moving. The tool may be damaged.

Press the shaft lock to prevent spindle rotation when

installing or removing accessories.

Sighting (Fig. 2)

There are notches on the front and rear of the base. This

is helpful for an operator to follow a straight cutting line.

Adjusting the grooving depth (Fig. 3)

The grooving depth can be adjusted between 0 mm and

30 mm.

Loosen the clamping screw and adjust the pointer to your

desired depth graduation on the scale.

Then tighten the clamping screw firmly.

Switch action (Fig. 4)

CAUTION:

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

the switch trigger actuates properly and returns to the

“OFF” position when released.

For tool with lock button

CAUTION:

• Switch can be locked in “ON” position for ease of

operator comfort during extended use. Apply caution

when locking tool in “ON” position and maintain firm

grasp on tool.

To start the tool, simply pull the switch trigger. Release

the switch trigger to stop.

For continuous operation, pull the switch trigger, push in

the lock button and then release the switch trigger.

To stop the tool from the locked position, pull the switch

trigger fully, then release it.

For tool with lock-off button

CAUTION:

• Do not pull the switch trigger hard without pressing in

the lock-off button. This can cause switch breakage.

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.

For tool without lock button / lock-off button

To start the tool, simply pull the switch trigger. Release

the switch trigger to stop.

Electronic function

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

Soft-start feature minimizes start-up shock, and makes

the tool start smoothly.

Overload protector

When the tool would be employed over the admissible

load, it will stop automatically to protect the motor and

wheel. When the load will come to the admissible level

again, the tool can be started automatically.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Removing the diamond wheels (Fig. 5, 6 & 7)

Loosen and remove the bolt with the hex wrench.

Open the blade case while holding the tool base.

NOTE:

• The tool base will open at a stroke by the spring force.

Rotate the diamond wheels while pressing the shaft lock

until it engages.

Remove the lock nut by rotating it counterclockwise with

the lock nut wrench.

Remove the diamond wheels and space rings.

Adjusting the groove width (the distance between

the two diamond wheels)

Adjust the grooving width by changing the number of the

space rings as shown in the table. (Fig. 8)

Installing the diamond wheels (Fig. 9 & 10)

Mount the diamond wheel carefully onto the spindle.

Align the directions of the arrow on the diamond wheel

and the tool. Install space rings, the other diamond wheel

and the lock nut.

Tighten the lock nut securely clockwise with the lock nut

wrench while pressing the shaft lock.

Return the blade case and tool base to the original

position and tighten the bolt to secure them.

Adjusting the front handle angle (Fig. 11)

Loosen the two bolts on both sides of the front handle

with the hex wrench. Move the front handle to your

desired angle and tighten the two bolts firmly.

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Makita SG1251 Manual

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