2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 33Get this manual
INSTALLATION AND PREDELIVERY PREINSTALLATION CONSIDERATIONS
PREINSTALLATION CONSIDERATIONS
Maximum Capacity
WARNING
Do not overpower the boat by installing an outboard that exceeds the horsepower indicated on the boat's capacity plateOverpowering could result in loss of controlThe following steps should be taken before installing outboard Refer to the boat manufacturer's certification label rating Refer to ABYC Standards to determine the maximum horsepower capacity for boats without certification labeling
WARNING
DO NOT install an outboard on curved or irregular surfaceDoing so can wear, bind, and damage components, causing loss of control
Transom Brackets and Jack Plates
For outboard mounting procedures related to boats equipped with outboard transom brackets and outboard jack plates, refer to the manufacturer's recommendations and specificationsConfirm maximum weight and horsepower capacities
One-piece Mounting Surface