1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 482Get this manual
DF4050 "K5" ('05) MODEL
UPPER MOUNT
The upper mount and related parts have been changed as follows: The upper mount bolt has been changed from M10 to M12 The inner tube of the upper mount has been changed in material and dimension The through holes in the upper mount have been eliminated The nut, washers and upper thrust stopper have been changed The through holes in the steering bracket have been enlarged The mount nut tightening torque has been changed to 80 Nm with applying the thread lock99000-32020: THREAD LOCK SUPER "1333B" Upper mount nut: 80 Nm (8.0 kg-m, 58.0 lb-ft)