2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Manual, Page 196Get this manual
How can loss of steering control be minimized?
Use steering system recommended by the motor manufacturer which meets Marine Industry Safety Standards (ABYC) Read, understand, and follow manufacturer's instructions When Follow warnings marked "A" closelyrigging Assemble parts carefullyor after Make adjustments carefullyservicing Keep parts moving freelyLubricate parts as shown in manual Use the bolts, nuts and washers supplied with steering attachment kits-they are speciallocking type that will not loosen, rust, or weaken
Transom Mounted Steering SystemsCheck to Uncover Possible Trouble!
Tilt motor into boat, then turn itDuring this procedure, steering parts: Must not bind; and Must not touch other boat, motor, or accessory parts in transom area Why? hard blow to the outboard's gearcase can result in damage to steering parts