Metabo HPT G12BYEQ, Safety Instructions And Instruction Manual

6.  Mounting the wheel guard

Be sure to mount the wheel guard at an angle that will 

protect the operator’s body from injury by a broken 

wheel piece.

[How to attach and adjust the wheel guard] (Fig. 2)

○

  Set the wheel ass’y to the packing gland.

○

  Tighten M5 Hex. socket bolt to secure the wheel 

guard while the lever is in closed position.

○

  Perform the adjustment, of the wheel guard while 

the lever is released. (Loosen M5 Hex. socket bolt 

and readjust if the wheel guard does not rotate 

smoothly.)

○

  After adjustment, if grinder operation is required, 

perform the operation only after setting the lever 

in closed position.

○

  Lubricate the sliding section of the set piece (B) 

and the lever if the lever does not move smoothly.

Set piece (B)

M5 hex. 

socket bolt

Lever

Fig. 2

WARNING

  If the wheel guard is not attached properly, a 

broken wheel may result in and cause death or 

serious injury.

7.  Thoroughly check that the depressed center wheel 

is free of cracks, splits and other abnormalities 

before mounting. Make sure it is 

fi

 rmly clamped and 

has been properly mounted. Refer to page 11 of this 

manual for Depressed Center Wheel Assembly and 

Disassembly.

8.  Test the grinder before using.

Before actually beginning the grinding work, test the 

grinder by 

fi

 rst clearing the area of all other personnel. 

Make sure the wheel guard is in place and that you 

are wearing eye protection. Turn the grinder “on”, and 

make sure the grinder runs smoothly and shows no 

abnormalities.

Duration of the trial run is as follows:

  When depressed center wheel is replaced

 ..................................................3 minutes or more

  When starting daily work 

 ....................................................1 minute or more

9.  Use only properly rated depressed center wheels.

  Use only depressed center wheels rated at 

13300/min or more.

Using a depressed center wheel rated less can lead 

to wheel disintegration during operation and cause 

serious bodily injury.

10.  Check the push button.

Make  sure  that  the  push  button  is  disengaged  by 

pushing push button two or three times before turning 

on the grinder. (Fig. 5)

GRINDER OPERATION

1.  Hold the grinder 

fi

 rmly by its housing and side handle 

(Fig. 1).

  The grinder produces a counterforce which must be 

controlled by 

fi

 rmly holding onto the grinder.

2.  Turn the grinder “on”. (Fig. 3)

  To switch on, slide the o

ff

 -lock lever in the direction 

of 

Ⓐ

 and press the switch lever (2 locations) in the 

direction of 

Ⓑ

 as shown in Fig. 3. Release the switch 

lever to switch o

ff

 .

O

ff

 -lock 

lever

Switch lever

Ⓑ

Ⓐ

Fig. 3

3.  Use light grinding pressure.

There is no need to press hard when grinding. Usually 

the grinder’s own weight is su

ffi

  cient to allow the 

required light contact with the surface to be ground.

Do not apply the grinding wheel strongly to the grinding 

surface. The grinder makes use of electronic circuit, 

so during application of load rotates at high speed, 

so ample grinding e

ff

 ect can be obtained by applying 

light pressure. If a strong grinding pressure or other 

abnormal load is applied, the overload protection 

circuit will operate and make the grinder stop rotating, 

so please stop applying load immediately. Following 

this, switching the power OFF and then ON again, will 

cause the rotation to increase to the regular speed.

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English

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0000G12BYEQ̲metabo.indb   10

2020/06/15   14:18:15

2020/06/15   14:18:15