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Troubleshooting
Problem
Cause
Solution
Too much vibra-
tion and/or unusual
noises.
The grinding discs are worn or damaged.
Examine the grinding discs for damaged
parts and too much movement.
The bearing is defective.
Do a check of the bearing on the axle drive
shaft and replace if it is necessary.
Unwanted material deposit on the coupling.
Clean the coupling.
Decreased or
no grinding perform-
ance.
The diamond tools are worn.
Replace the worn parts.
The incorrect type of diamond tools for the
surface.
Replace the diamond tools with correct dia-
mond tools for the surface.
The product does not
start.
The emergency stop button is engaged.
Turn the emergency stop button clockwise to
disengage.
A defective component.
Replace the defective component.
BG 250: Only 1 phase comes into the prod-
uct.
Do a check of the power supply.
BG 250: The extension cable is disconnected
or damaged.
Connect the extension cable or if it is neces-
sary, replace the extension cable.
BG 250Petrol: There is no fuel in the fuel
tank.
Fill the fuel tank with fuel. Refer to
.
BG 250Petrol: There is no oil in the oil tank.
Fill the oil tank with oil. Refer to
check of the oil level (BG 250Petrol) on page
50
.
The product stops af-
ter a while.
BG 250: The motor protection switch is in
operation because of overload.
Decrease the load.
BG 250: The motor has a defect.
Do a check of the motor.
BG 250Petrol: Incorrect fuel tank cap.
Make sure to the fuel tank cap is fully tight-
ened when you operate the product.
The product is not
easy to hold on to.
Too small number of diamond tools on grind-
ing head.
Use the correct number of diamond tools.
The incorrect type of diamond tools for the
surface.
1802 - 002 - 13.04.2022
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