KYMCO MXU 500 Owner's Manual page 328

7. ENGINE REMOVAL/INSTALLATION
Apply lightweight lithium-soap base grease
to the front propeller shaft splines and front
output splines.
Install the front propeller shaft into the
engine assembly.
Install and tighten the three new bolts to
specified torque.
＊
Always install the bolts with the new
ones.
Torque: 4.5 kgf-m (45 N-m, 32.5 lbf-ft)
Install the front cooling duct.
＊
Make sure the lug on the left crankshaft
case into the cutout on the front cooling
duct.
Front Propeller Shaft
Apply grease
Front Propeller Shaft
MXU 500
7-10