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flange is fitted facing towards the disc to provide improved 
support for the disc hole (See Fig. C.1). Always ensure your disc 
is securely clamped.

Adjusting the protection guard 
Before any work on the machine itself, pull the mains plug.
For work with grinding or cutting discs, the protection guard 
must be mounted.

The coded projection (11) on the protection guard (10) 
ensures that only a guard that fits the machine type can be 
mounted.
Loosen the clamping screw (9), if necessary.
Place the protection guard (10) with coded projection (11) into 
the coded groove on the spindle collar of the machine head and 
rotate to the required position (working position).
The closed side of the protection guard (10) must always point 
to the operator.
Tighten clamping screw (9).

OPERATION
STARTING OPERATION

To start the power tool, push the on/off switch (3) forward.
To lock the on/off switch (3), press the on/off switch (3) down 
at the front until it engages.
To switch off the power tool, release the on/off switch (3) or, if 
it is locked, briefly push down the back of the on/off switch (3) 
and then release it. (See Fig. D)

OPERATING INSTRUCTIONS

• Clamp the workpiece if it does not remain stationary due to its 
own weight.
• Do not strain the machine so heavily that it comes to a 
standstill.
• Grinding and cutting discs become very hot while working; do 
not touch until they have cooled.

• Pull the plug from the socket-outlet when not using the 
machine. 

With the plug inserted and mains voltage existing, 

the power tool still has low power consumption even when it 
switched off.

1. HAND GRIP AREAS

Always hold your angle grinder firmly with both hands when 
operating (See Fig. E).

2. ROUGH GRINDING

The best roughing results are achieved when setting the 
machine at an angle of 30° to 40°. Move the machine back and 
forth with moderate pressure. In this manner, the workpiece 
will not become too hot, does not discolour and no grooves are 
formed.

WARNING: 

Never use a cutting disc for roughing.

3. CUTTING

3

15

o

-30

o

Fig.A

Fig.B

Fig.C1

Fig.C2

Fig.D

Fig.E

Summary of Contents for JM850AG

Page 1: ...SAFETY AND OPERATING MANUAL 850W 100mm ANGLE GRINDER JM850AG ...

Page 2: ...d supply Use of an RCD reduces the risk of electric shock 3 PERSONAL SAFETY a Stay alert watch what you are doing and use common sense when operating a power tool Do not use a power tool while you are tired or under the influence of drugs alcohol or medication A moment of inattention while operating power tools may result in serious personal injury b Use personal protective equipment Always wear e...

Page 3: ...y can be attached to your power tool it does not assure safe operation d The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool Accessories running faster than their rated speed can break and fly apart e The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool Incorrectly sized accessories cannot b...

Page 4: ...y taking proper precautions as given below a Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces Always use auxiliary handle if provided for maximum control over kickback or torque reaction during start up The operator can control torque reactions or kickback forces if proper precautions are taken b Never place your hand near the rotating ac...

Page 5: ...on in the workpiece Let the wheel reach full speed and carefully reenter the cut The wheel may bind walk up or kickback if the power tool is restarted in the workpiece e Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback Large workpieces tend to sag under their own weight Supports must be placed under the workpiece near the line of cut and near the edge o...

Page 6: ...nd Grip Area 5 Inner Flange 6 Outer Flange 7 Spanner 8 Grinding Disc 9 Clamping Screw 10 Protection Guard For Grinding 11 Coded Projection 12 Protection Guard For Cutting Not all the accessories illustrated or described are included in standard delivery 1 2 3 5 8 7 6 9 10 11 12 4 ...

Page 7: ...r accessories from the same store that sold you the tool Refer to the accessory packaging for further details Store personnel can assist you and offer advice TECHNICAL DATA Rated voltage 230 240 V 50 Hz Rated input power 850W Rated speed 12000 min Protection class II Spindle thread M10 Disc size 100mm Disc bore 16mm Machine weight 1 85kg ...

Page 8: ...an the grinder spindle and all parts to be mounted For clamping and loosening the grinding tools lock the grinder spindle with the spindle lock button 2 Actuate the spindle lock button 2 only when the grinder spindle is at a standstill 2 GRINDING CUTTING DISC Pay attention to the dimensions of the grinding disc The mounting hole diameter must fit the inner flange 5 without play Do not use reducers...

Page 9: ...tch 3 down at the front until it engages To switch off the power tool release the on off switch 3 or if it is locked briefly push down the back of the on off switch 3 and then release it See Fig D OPERATING INSTRUCTIONS Clamp the workpiece if it does not remain stationary due to its own weight Do not strain the machine so heavily that it comes to a standstill Grinding and cutting discs become very...

Page 10: ...ed with a diamond disc When using a diamond disc it will become very hot If this happens you will see a full ring of sparks around the rotating disc Stop cutting and allow cooling at no load speed for 2 3 minutes Always ensure the workpiece is firmly held or clamped to prevent movement MAINTENANCE Remove the plug from the socket before carrying out any adjustment servicing or maintenance Your powe...

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