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f)  Do not use worn down wheels from larger power 

tools. 

Wheel intended for larger power tool is not 

suitable for the higher speed of a smaller tool and may 
burst.

ADDITIONAL SAFETY WARNINGS SPECIFIC FOR 
ABRASIVE CUTTING-OFF OPERATIONS: 
OPERATIONS
a)  Do not “jam” the cut-off wheel or apply excessive 

pressure. Do not attempt to make an excessive 
depth of cut. 

Overstressing the wheel increases the 

loading and susceptibility to twisting or binding of the 
wheel in the cut and the possibility of kickback or wheel 
breakage.

b)  Do not position your body in line with and behind 

the rotating wheel. 

When the wheel, at the point of 

operation, is moving away from your body, the possible 
kickback may propel the spinning wheel and the power 
tool directly at you.

c)  When wheel is binding or when interrupting a cut 

for any reason, switch off the power tool and hold 
the power tool motionless until the wheel comes 
to a complete stop. 

Never attempt to remove the 

cut-off wheel from the cut while the wheel is in motion 
otherwise kickback may occur. Investigate and take 
corrective action to eliminate the cause of wheel 
binding.

d)  Do not restart the cutting operation 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 of the workpiece 
on both sides of the wheel.

f)  Use extra caution when making a “pocket cut” into 

existing walls or other blind areas. 

The protruding 

wheel may cut gas or water pipes, electrical wiring or 
objects that can cause kickback.

SAFETY WARNINGS SPECIFIC FOR SANDING 
OPERATIONS: 
a)  Do not use excessively oversized sanding disc 

paper. Follow manufacturers recommendations, 
when selecting sanding paper.

 Larger sanding 

paper extending beyond the sanding pad presents a 
laceration hazard and may cause snagging, tearing of 
the disc or kickback.

SYMBOLS

To reduce the risk of injury, user must 
read instruction manual

Double insulation

Warning

Wear ear protection

Wear eye protection

Wear dust mask

Wear protective gloves

RCM marking

ABN:

 Australian Business Number. By this number, 

business information such as entity type, status, 
business location etc. can be found at website http://
abr.business.gov.au. 
ABN of Positec Australia Pty Limited is 14 101 682 
357

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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