I reread what I wrote earlier, that 15lbs is for the rocker hold down nuts not the rocker cover nuts.I know this is an older post, but I was looking around at torque specs for B7100's and I could not find the specs for the 3 rocker cover nuts in the Kubota WSM either. HOWEVER someone in another forum has posted information they said was from their I and T manual and that manual gave 7-9 ft lbs for those 3 nuts.
If there is anyone out there who can clarify this feel free.