How to replace RP600A nozzle

This is video demonstrating how to replace the nozzle for RP600A. Enjoy.

Why you need to replace the nozzle?
Under rare circumstances, there might be clogging. For example, if the user used ABS and switch to PLA but didn’t finish the ABS in the nozzle, when temperature change to PLA, the ABS in the nozzle won’t be melted. This could result in clogging. With serious clogging, nozzle needs to be changed.

There might be a problem with the nozzle in the following circumstances,
1, the filament won’t come out;
2, the filament is coming out from the ventilation holes rather than the tips;
3, temperature, feeding and all other functions are perfect, but the filament still won’t come out.