2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 36Get this manual
INSTALLATION AND PREDELIVERY TRANSOM MEASURING AND DRILLING spacing dimensionBracket installations may not require this considerationUse straightedge as reference to extend the bottom of the boatPosition the straightedge along centerlineThe distance from the top edge of the straightedge to the top edge of the transom is the actual transom height2
DRC5527B
1Top edge oftransom 2Actual transom height
Measure the transom for dual-outboard centerline spacing once the centerline of the hull is establishedMark two outboard centerlines parallel to the hull's centerlineThese lines represent the outboard centerlines for dual-outboard installation