Renault Duster 2007 Manual page 142

TOP AND FRONT OF ENGINE
Timing belt: Removal - Refitting
K9K, and 796
1 - First position
a Loosen the tensioning roller bolt by no more than
one turn, holding it with a 6 mmAllen key.
a Gradually align the adjustable index marker (24) in
the middle of the timing window (25) , turning the key
anti-clockwise.
111083
111081
11A-39
11A