Before disassembly, please return the consumables in the print head to ACE Pro, then turn off the printer and disconnect the power supply to ensure safe operation.
Use an S2.0 Allen key to unscrew the two screws holding the four-in-one out assembly.
Please press the fastener of the four-in and one-out assembly and pull out each of the four teflon tubes.
Replace the new 4-in-1 out assembly, then press the 4-in-1 out assembly clip and insert the four teflon tubes back into the 4-in-1 out assembly.
Please put the four-in-one assembly back into the printer rear cover, then use the S2.0 Allen key to tighten the two screws holding the four-in-one assembly in place.