How to change the needle nozzle set

How to change the needle nozzle set

How to change the needle nozzle set ?

 

Q:  How to change the needle nozzle set ?

 

A:  setp 1: screw off parts no. 1,2,22,21 as shown in the picture.

     setp 2: push down the trigger to take out parts no. 20 easily.

     step 3: replace new needle nozzle set.

     setp 4: put back part no. 21, 22.



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