Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 472Get this manual
ATTACHMENTSCONTROL LINKAGE
STEERING ARM EXTENSION BRACKET INSTALLATION
Secure steering arm extension bracket to each out- board's steering arm
- Steering Arm (Port Outboard Shown)Extension BracketLocking Retainer (2 Each Bracket)Bolts (2 Each Bracket) 1-14 in(31.8 mm) LongTorque to 23 lbft(31 Nm), Then Bend Corner Tabs of Locking Retainers Up Against Flats on Each Bolt