Just checked the installation instructions on Motovation's website - they only say "torque to manufacturer's specs". I'll call my local dealer and/or e-mail Yamaha to see what they say - then post the info here for others to see.
Torque info and a lot more is in the fjr bin of facts. This is cut and pasted from it:
[SIZE=12pt]Engine Mount Torques:[/SIZE]
ft-lb:Size: Description
35: M12: Engine mounting bolts (right front lower side)
35: M12: Engine mounting bolts (right front upper side)
35: M12: Engine mounting bolts (left front lower side)
35: M12: Engine mounting bolts (left front upper side)
32: M10: Engine mounting nut (rear upper side)
13: M16: Spacer bolt
32: M10: Engine mounting bolt (rear lower side)
11: M8: Engine mounting bolt (left rear side)
23: M10: Engine bracket bolt (left rear side)
11: M8: Engine bracket bolt (top)
27: M10: Engine mounting bolt (top)
Engine Mount Torques (in sequence of operation)
ft-lb: description
35: Left Front Upper Side engine mount BOLT
32: Rear Lower Side engine mount BOLT
13: Spacer Bolt (right side top, special tools required)
32: Rear upper side engine mounting NUT (threads oiled)
35: Left Front Lower Side Engine mounting bolt (Typical Slider Installation Bolt (torque the Left side First)
35: Right Front Upper Side Engine mounting bolt
35: Right Front Lower Side Engine mounting bolt (Typical Slider Installation Bolt (torque the Right side last)