Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 491Get this manual
STEERING ARM EXTENSION BRACKET INSTALLATION Secure steering arm extension bracket to each outboard's steering armd
Thread steering eyes equally into coupler, so that distance between hole centers of steering eye ball joints is equal to distance between threaded hole centers of steering arm extensionsExposed threads of steering eyes MUST BE of equal length and threads MUST NOT extend out from coupler more than 2-34 in(70mm)
aCouplerRubber SleeveSteering EyeRubber BushingJam Nut
51889 abcdSteering Arm (Port Outboard Shown) Extension Bracket Locking Retainer (2 Each Bracket) Bolts (2 Each Bracket) 1-114 in(31.8mm) LongTorque to 280 lbin(32.0 Nm), Then Bend Corner Tabs of Locking Retainers Up Against Flats on Each Bolt
Both steering eyes must be threaded into coupler 34 in(19mm) minimumThread length of steering eye is 3-12 in(89mm), so exposed thread must not extend out of coupler more than 2-34 in(70mm)Failure to adhere to this requirement could result in steering system failure