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2. Examine the rear door for defects that push the door
to close, including cracks or broken springs.
3. Replace the rear door or the springs if they are
damaged.
To sharpen and balance the blade
For best results, keep the blade sharp. Replace a bent
or damaged blade.
CAUTION: Use gloves, and/or wind the
blade with a heavy cloth, to prevent damage
to your hands .
1. Sharpen the blade with a file or on a grinding wheel.
Do not sharpen the blade when it is installed on the
product.
CAUTION: We do not recommend that
you sharpen the blade. If you do, make
sure that the blade is balanced. A blade
that is not balanced can cause damage
to the product or motor.
2. Put a straight nail in a piece of wood or a wall. Make
sure you can see 2-3 cm of the nail.
3. Put the center hole of the blade on the head of the
nail. If the blade is balanced, it must stay in a
horizontal position. If one of the two ends of the
blade moves down, sharpen the heavy end until the
blade is balanced.
Error codes
The error codes help you do troubleshooting on the
product and/or the battery pack while in operation.
LED screen
No LEDs come on after pressing
the power button on the user con-
trol interface, battery pack does not
function in product
All four battery capacity LEDs
flash, no other LEDs come on after
pressing the power button
All four battery capacity and power
LEDs flash, no other LEDs come
on after pressing the power button
851 - 003 - 23.10.2018
Possible faults
Battery pack not fully put
into product or internal
fuse is blown
Battery pack not fully put
into product or the internal
temperature of the battery
pack is too hot or too cold.
Motor control handle held
down when the power but-
ton is pressed for the first
time or internal motor con-
trol handle switch failure
To replace the blade
1. Lock the blade with a block of wood.(Fig. 45 )
2. Remove the blade bolt.
3. Remove the blade.
4. Examine the blade support and blade bolt to see if
there are damages.
5. Examine the motor shaft to make sure that it is not
bent.
6. When you attach the new blade, point the angled
ends of the blade in the direction of the cutting cover.
(Fig. 46 )
7. Make sure that the blade is aligned with the center of
the motor shaft.
8. Lock the blade with a block of wood. Attach the
spring washer and tighten the bolt and washer with a
torque of Nm.(Fig. 47 )
9. Pull the blade around by hand and make sure that it
turns freely.
WARNING: Use heavy duty gloves. The
blade is very sharp and cuts can easily
occur.
10. Start the product to do a test of the blade. If the
blade is not correctly attached, there is vibration in
the product or the cutting result is unsatisfactory.
Possible steps
Push the battery pack fully into the powerhead un-
til a click is heard. If the LEDs do not illuminate af-
ter the battery pack has been fully put in and the
power button has been pressed on the user con-
trol interface, speak to an approved service cen-
ter.
Push the battery pack fully into the powerhead un-
til a click is heard. If the LEDs continue to flash,
the internal temperature of the battery pack may
be too low or too high. Allow the battery pack to
warm up or cool. To increase the cooling process,
the battery pack can be inserted into the battery
charger to actively cool the battery pack.
Release the motor control handle. If the motor
control handle is not held down and the LEDs
continue to flash, speak to an approved service
center.
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