Obtain the following tools:
- Power or Hand Drill,
- Centre Punch & Hammer,
- 4.2mm Diameter Drill,
- M5 Tap,
- 5.2mm diameter Drill
With window in closed position, select the optimum position for lock.
Mark with centre punch and drill 4.2mm diameter hole.
Thread the hole drilled using M5 Tap.
Open window, drill out threaded frame section only. With clearance drill 5.2mm diameter deburr.
Close Window. Fit window lock using Rola Keys (Not Supplied)