To do this when door is open you will need to press the deadlatching pin which sits above the main latch next you will need to undo the cylinder retaining screw then insert and turn key to lock position.
How to change a lock on a screen door.
Discard the old handle.
Pull the splines out of the door frame groove with steady firm pressure.
The spindle should project through the inside of the door a maximum of 1 2 and min of 1 4.
Cylinder will then pull out.
Once the new pins are in reverse the steps to reassemble the lock.
On the other hand some parts have not changed in forty years.
Trade in the broken shabby push button handle on your screen door for a shiny new easy opening lever handle.
Remove the old handle and screen door latch unscrew both interior latch mounting screws pull the interior and exterior handles apart and remove the center spindle.
Remove the two screws from the latch plate on the edge of the door and remove the latch from the opening.
Screen door locks and latches.
Learn how to replace or change the security door lock under three minutes.
Use an awl or your screwdriver to pry up the spline at the corner of the frame.
Firstly for a whitco mk ii tasman lock the lock needs to be in the locked position.
There is a separate piece of spline for each side of the screen.
Screen door locks and latches are usually the kind of parts that you really need but no one seems to have the right part.
Insert the deadbolt spindle from the inside through the center hole into the key lock.
Begin by removing the screws from the door knob on the interior side of your door.
As with the handle you may need to cut your spindle to suit your door thickness.
Window companies change their parts over the years and often the parts used by your windows become unavailable.
This allows you to pull the door knobs off the door from both sides.
Did you lose the key somewhere near your house and now you are worrying that perso.
In some cases door latch plate mortises might need to be cut or enlarged.
This video is how to install a screen door handle on a standard screen door.