MZ/MuZ Riders

Good afternoon all,
After taking my ETZ 250 (with a 301 barrel) out for a lengthy run I noticed a trickle of oil from the base of the barrel. on discussing it with my bro (who'm I got it from & who fitted the barrel) I discovered it wasn't torqued (which was good of him).

Can anyone tell me, as I don't have a manual yet, what the torque settings are.

Your help would be very much appreciated

Shaun
BMW R1150RT/MZ 250 squire combo/XJ900 project

If i remember rightly it's 13ft/lb ( don't believe Haynes which in at least some editions had a much higher one which will strip threads!)