2006 Johnson SD 3.5 HP 2 Stroke Outboard Service Manual, PN 5006562, Page 32Get this manual
INSTALLATION AND PREDELIVERY TRANSOM MEASURING AND DRILLING
TRANSOM MEASURING AND DRILLING
Hull Centerline
Locate the centerline of the boat transom as it relates to the hull (bottom) of the boatUse straightedge to draw line connecting the port and starboard chinesThe chines should be used as reference points for determining the centerline of the hullUse framing square to accurately place line on the transomThe centerline of the hull should be in line with the keel of the hull and perpendicular to the midpoint of the line connecting the port and starboard chines
3.5 Model 1Lift grip
DR44455