How to replace a battery connector retractating pin from Yaesu FT-11R?

Hi there,
I am trying to repair an old Yaesu Ft 11R hand held radio.
One of the four pins on the radio that the battery contacts is not coming out to make contact, it is staying retracted.
There must be a way to fix this little part and make tis radio work again.The radio is in great condition.
Any help would be great, thank you.