The roll out of electric trains will be complete from Monday with electric trains operating on all lines.
With the introduction of electric trains a transfer will be required at Papakura for travel to and from Pukekohe.
A bus service will replace trains between Swanson and Waitakere.
The newWestern Line and Southern Line train timetables will show which trains have a connecting bus (for Waitakere) and diesel train (for Pukekohe) services.
There will be minor timetable changes for most lines from Monday, 20 July.