Ducati 959 Panigale Owner's manual:
"Turn the rear wheel until you find the position where chain is tightest. Set the vehicle on the side stand. With just a finger, push down the chain at the point of measurement and release. Measure the distance (A) between the centers of the chain pins and the aluminum section of the swinging arm. It must be: A= 1.6 / 1.7 in ( 41 / 43 mm)."

"Turn the rear wheel until you find the position where chain is tightest. Set the vehicle on the side stand. With just a finger, push down the chain at the point of measurement and release. Measure the distance (A) between the centers of the chain pins and the aluminum section of the swinging arm. It must be: A= 1.6 / 1.7 in ( 41 / 43 mm)."