Your extract from a service schedule looks interesting. It's not taken from the owner service handbook (see below) and it would be useful to have a copy, if there is any way you could get one to us, or post a link to the location!
This is what the owners service handbook says on the matter (page 75) relating to the current post 2013 model;
With a maximum travel of 45mm you're looking at an up and down movement of some 22.5mm from the centre point of the chain run - which gets pretty close to the bottom of the swing arm, as shown in the picture!TRANSMISSION CHAIN
NOTE - The driver should only check the transmission chain tension and lubrication.
Check the chain tension every km 500;
• With the motorcycle ready to start, on a level ground without driver and with the side stand up.
• Press the chain from above around the middle of the swing arm.
• When the chain tension is correct, a maximum travel of 40-45 mm is allowed. In case the chain travel exceeds the indicated one, have the tension adjusted by a Moto Morini Authorised Service Centre or a motor vehicle workshop.
An incorrect chain tension may lead to an early wear of the pinion, the sprocket and the chain itself.
Lubriicate every Km 500 (or more often in case you use the motorcycle mostly on dusty or wet roads).
Always lubricate with special products, strictly following the instructions of use indicated on the product box.
• Use HIGH SPEED CHAIN
Good riding,
CC