Hi guys my friend has a husqvarna chainsaw and the interlock has broken on the trigger he has supplied me with the parts but dont no how it goes together because i dont no how the spring has to be positioned i played with it for a hour and now given up http://www.husqvarna.com/ddoc/HUSI/HUSI1999_AAaa/HUSI1999_AAaa_I9900064_.pdf
go to about the 5th page down i couldn't figure it out