It is a known fact that the loader frame bolts need to be checked routinely when the rig is new. I believe it is mentioned in the owner's manual.
Gr10.9 fine thread 16mm should be about 200ft# dry. 18mm fine about 260. About 210-215 on the 18mm should give near the same clamp force as 200 on the 16mm.Does anyone know the Kubota stated torque specifiation for the FEL bolts????????