2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 32Get this manual
INSTALLATION AND PREDELIVERY OUTBOARD INSTALLATION
OUTBOARD INSTALLATION
Hull Preparation
Maximum Capacity
WARNING
DO NOT install an outboard on curved or irregular surfaceDoing so can wear, bind, and damage components, causing loss of control
WARNING
Top Edge of Transom or Bracket