Manual Makita MT904 (page 7 of 56) (English, German, Dutch, Danish, French, Italian, Portuguese, Turkish, Spanish)

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Mount the inner flange onto the spindle. Fit the wheel/disc

on the inner flange and screw the lock nut onto the

spindle. (Fig. 5)

To tighten the lock nut, press the shaft lock firmly so that

the spindle cannot revolve, then use the lock nut wrench

and securely tighten clockwise. (Fig. 6)

To remove the wheel, follow the installation procedure in

reverse.

OPERATION

WARNING:

• It should never be necessary to force the tool. The

weight of the tool applies adequate pressure. Forcing

and excessive pressure could cause dangerous wheel

breakage.

• ALWAYS replace wheel if tool is dropped while

grinding.

• NEVER bang or hit grinding disc or wheel onto work.

• Avoid bouncing and snagging the wheel, especially

when working corners, sharp edges etc. This can

cause loss of control and kickback.

• NEVER use tool with wood cutting blades and other

sawblades. Such blades when used on a grinder

frequently kick and cause loss of control leading to

personal injury.

CAUTION:

• Never switch on the tool when it is in contact with the

workpiece, it may cause an injury to operator.

• Always wear safety goggles or a face shield during

operation.

• After operation, always switch off the tool and wait until

the wheel has come to a complete stop before putting

the tool down.

Grinding operation (Fig. 7)

ALWAYS hold the tool firmly with one hand on rear handle

and the other on the side handle. Turn the tool on and

then apply the wheel or disc to the workpiece.

In general, keep the edge of the wheel or disc at an angle

of about 15 degrees to the workpiece surface.

During the break-in period with a new wheel, do not work

the grinder in the B direction or it will cut into the

workpiece. Once the edge of the wheel has been rounded

off by use, the wheel may be worked in both A and B

direction.

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. (Fig. 8)

Replacing carbon brushes (Fig. 9)

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.

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. 10)

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.

Noise

ENG905-1

The typical A-weighted noise level determined according

to EN60745:

Model MT904

Sound pressure level (L

): 91 dB (A)

Sound power level (L

): 102 dB (A)

Uncertainty (K): 3 dB (A)

Model MT905

Sound pressure level (L

): 90 dB (A)

Sound power level (L

): 101 dB (A)

Uncertainty (K): 3 dB (A)

Wear ear protection.

Vibration

ENG900-1

The vibration total value (tri-axial vector sum) determined

according to EN60745:

Work mode: surface grinding

Vibration emission (a

h,AG

): 9.0 m/s

Uncertainty (K): 1.5 m/s

ENG902-1

• The declared vibration emission value has been

measured in accordance with the standard test method

and may be used for comparing one tool with another.

• The declared vibration emission value may also be

used in a preliminary assessment of exposure.

• The declared vibration emission value is used for main

applications of the power tool. However if the power

tool is used for other applications, the vibration

emission value may be different.

WARNING:

• The vibration emission during actual use of the power

tool can differ from the declared emission value

depending on the ways in which the tool is used.

• Be sure to identify safety measures to protect the

operator that are based on an estimation of exposure in

the actual conditions of use (taking account of all parts

of the operating cycle such as the times when the tool

is switched off and when it is running idle in addition to

the trigger time).

For European countries only

ENH101-18

EC Declaration of Conformity

Makita declares that the following Machine(s):

Designation of Machine:

Angle Grinder

Model No./Type: MT904, MT905

Conforms to the following European Directives:

2006/42/EC

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Makita MT904 Manual

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