Use this guide to exchange the pins of your blades head.
To proceed to the exchange you will need the following tool:
Manual screwdriver with a cross-tip size C 2,2 x 9,5 H (Phillips)
IMPORTANT NOTES
Do not use an electric screwdriver, otherwise you could end up damaging the plastic thread of the screw socket.
Only screw until you feel resistance otherwise it might damage the plastic thread of the screw socket.
STEP 1 - Disassemble the blades head
To disassemble the blades head follow the plan below.
You can also watch our video tutorial here.
STEP 2 - Remove the pin's stoppers and the pins
Use the screwdriver to unscrew the two pairs of screws that hold the pin's stoppers in place.
Now you can remove the pin's stoppers and the pins.
STEP 3 - Exchange the pins and assemble the blades head
Take the new pair of pins and insert them into their holes, making sure that the springs are correctly positioned straight and fixed onto their own spring holder.
Screw back the pin stoppers and assemble the blades following the instructions of
STEP 1 by reading the steps in the reversed order.