The diagrams are a great resource for DIYers, as well as professional technicians, to help them troubleshoot any problems that might arise on the boat. With Mercury 200 Optimax wiring diagrams, you can easily identify any faulty connections or wires that may be causing an issue.. Mercury Optimax 75, 90, 115, DFI - starting year 2004 service manual. Covers models starting model year 2004, Serial Number 0T8010000 and Up Manual part #: 90-889785, April 2003 Manual chapters: Section 1 - General Information & Specifications A - Specifications B - Maintenance C - General Info..
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