L2501HST cant remove assembly nozzle

[juanm625]

hi everyone, im attempting to remove these parts on my kubota L2501 tractor because it was struggling to start and then stopped starting up completely.

The part is called “assembly nozzle holder”, part number 1G852-53002. am i supposed to unscrew it or should it be able to be pulled out? yanking on it has done nothing so far. ive attached pictures showing what i am trying to remove and the part i have to replace them

 

[007kubotaguy]

Why are you trying to remove them? What troubleshooting have you done? Is highly unlikely that you have bad injectors causing it not to start. The most common problem on these machines is the small lift pump. Do you have fuel to the injection pump?