You will need keys "for 8" And "on 10".
1. Loosen the two nuts securing the lock housing and the protective screen to the rear door studs.
2. By moving the lock body, achieve reliable locking and easy opening of the rear door. Tighten the lock nuts. If this cannot be achieved...
3.... loosen the fixing bolts and...
4.... by moving the latch, adjust the operation of the lock. Tighten the bolts of the lock retainer finally.