How to put the spring back into my Yale lock?

I cannot for the life of me figure out how to put the spring back into a Yale lock. This is a stirling Yale look. Other Yale locks I've seen have somewhere where you can place the spring, this one doesn't. I taken a picture of my lock and pasted the link to it below

https://www.dropbox.com/s/82j02n6q3auk21s/2016-01-03%2020.05.44.jpg?dl=0

Please can anybody help it's driving me mad.
Drew84, January 2016


done
45 seconds with Google Image search

http://www.ultimatehandyman.co.uk/forum1/yale-night-latch-spring-t75874.html

Why the hell didn't you search?, January 2016
reverse a yale lock to open out.AV ( CHECK ) this out on youtube, lots of videos thjere on your problem, or just google it, and you find lots of info and PDf on your problem,

h, January 2016
link Click here to see other fixes for Yale.