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Refill toner (instructions) Brother MFC-L 2740 CW MFC-L 2740 DW TN-2310

Preparation for refilling the Brother MFC-L 2740 CW MFC-L 2740 DW TN-2310 toner cartridge:

Before you start filling, please read the instructions carefully. When filling toner cartridges, we generally recommend wearing gloves and a fine dust mask.

This toner cartridge from Brother is very easy to fill. Place the toner cartridge on the table in front of you. Carefully remove the label (Figure 1). The sealing plug is located underneath. With a spatula or a small screwdriver you can remove the sealing plug with small lever movements (Figure 2). 

Figure 1
Figure 2

Before refilling your toner cartridge, you must remove the old toner powder. Due to different physical and chemical properties, the new and old toner can clump together. Vacuum the old toner powder or shake it into a tight plastic bag.

Filling the Brother MFC-L 2740 CW MFC-L 2740 DW TN-2310 toner cartridge:

Figure 3

Take your bottle of refill toner and screw a filling funnel onto it. This funnel makes it easier for you to dose more precisely during filling. Pour the toner powder into the toner cartridge (Figure 3). When you have filled your toner cartridge, you can insert the sealing plug again.

IMPORTANT: The cartridge must be absolutely closed. Check the cartridge for leaks by tapping gently on a piece of white paper. No toner should trickle out of the laser cartridge.

Replacing and resetting the reset lever on the toner cartridge Brother MFC-L 2740 CW MFC-L 2740 DW TN-2310:

Take a Phillips screwdriver and loosen the two marked screws (Figure 4) and then remove the side cover. Below are the drive gears and the reset lever. To refill the toner cartridge, you must remove the reset lever and the spring and then remove the sealing plug. Remove the spring (Figure 5). You can then remove the reset lever (Figure 6).


Before you fill your toner cartridge, you must remove the old toner that is still present. Shake it out in a tight plastic bag or vacuum it with a toner vacuum cleaner. Because of the frequent heating and cooling again, the used toner has different physical properties than new toner powder.

Figure 4 - Remove the screws
Figure 5 - Remove the spring
Figure 6 - Remove the wheel
Figure 7

Safety note for handling refill toner: Refill toner and toner powder can be harmful to health if improperly handled. We expressly recommend the use of respiratory protection equipment or suction chambers when filling toner cartridges. In addition, toner powder and refill toner can be extremely flammable with an appropriate oxygen mixture. Also, be careful not to touch the photoconductor drum or expose it to direct sunlight. This can lead to incorrect printouts. Eurotone assumes no responsibility for the success or failure of the procedure described.