3USG
English
Additional safety 
precautions have to be 
observed when operating 
the universal sharpener.
It is important that you 
read and understand the 
owner’s manual before 
using your tool  for the first 
time. Keep it in a safe 
place for later reference. 
Non-observance of the following safety 
precautions may cause serious or even 
fatal injury. 
Always observe local safety regulations, 
standards and ordinances.
If you have never used this sharpener 
model before: 
Have your dealer or a trained expert 
show you how to operate it properly and 
safely.
Minors should never be allowed to use 
an electric sharpener.
Keep children, bystanders and animals 
well clear of the work area.
Only use the grinding wheels supplied 
by STIHL or expressly approved by 
STIHL for use with your specific model.
Do not use any other grinding wheels 
since they will increase the risk of injury.
Switch on the motor only if its operating 
voltage agrees with the voltage of your 
power supply.
Clothing and Equipment
Wear proper protective clothing and 
equipment.
The grinding dust produced when using 
this sharpener may cause health 
problems. Always use a dust extractor 
or wear a suitable respirator.
The sparks created during sharpening 
may cause eye injuries.
Always wear  safety 
glasses.
Clothing must be sturdy and snug-fitting, 
but allow complete freedom of 
movement. 
Wear overalls – avoid loose-fitting 
jackets.
Wear steel-toed safety 
boots with non-slip soles.
Wear heavy-duty, non-
slip gloves, preferably 
made of leather.
Before Starting Work
Check that your sharpener is properly 
assembled and in good condition. Do 
not operate your sharpener with a 
damaged connecting cord or grinding 
wheel.
Maintenance and Repairs
Always disconnect the unit from the 
power supply before carrying out any 
maintenance work. Only perform the 
adjustments and maintenance 
operations described in this manual.
All other maintenance and repairs 
should be carried out by your STIHL 
dealer.
Only use original STIHL replacement 
parts.
In the interests of your own safety, never 
modify your electric sharpener in any 
way.
Safety Precautions