Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 488Get this manual
ATTACHMENTSCONTROL LINKAGE
WARNING
After installation is completed (and before operating outboard), check that boat will turn right when steering wheel is turned right and that boat will turn left when steering wheel is turned leftCheck steering thru full range (left and right) at all tilt angles to assure interference-free movement
Maintenance Instructions
Lubrication and maintenance inspection is owner's responsibility and must be performed at intervals specified, following: Normal ServiceEvery 50 hrsof operation or 60 days (whichever comes first) Severe ServiceEvery 25 hrsof operation or 30 days (whichever comes first) Operation in salt water area is considered "Severe Service