90-822900R1 Service Manual – Mercury/Mariner 225, 225 EFI, 250 EFI, 3.0L Marathon & SeaPro (1996)

The 90-822900R1 Service Manual is an OEM factory-issued guide covering Mercury and Mariner outboard models: 225, 225 EFI, 250 EFI, and 3.0 Litre (Marathon & SeaPro). Dated January 1996, it’s calibrated for units with serial numbers 0D280813 and above (U.S.).

Covered Engine Models & Serial Range

• 225 and 225 EFI powerplants

• 250 EFI variant

• 3.0 L Marathon and 3.0 L SeaPro heavy-duty models
  Designed explicitly for U.S. units with serials 0D280813+.

Technical Content & Repair Procedures

This factory manual contains thorough sections with:

• Master specs, torque settings, and maintenance schedules

• Maintenance and repair steps for electrical, fuel systems, powerhead, midsection, lower unit, and controls

• Clear diagrams and procedural illustrations—ideal for technicians or DIY mechanics.

Condition & Physical Details

This is a pre-owned, original factory manual. It is complete and legible, with no missing pages reported. Acknowledged as "used condition, some dirt and grease prints on covers and some inside pages” in a recent listing.

At Arizona Outboard Dismantlers, we specialize in genuine marine service materials that keep you on the water. This 90-822900R1 Service90-822900R1 Service Manual delivers precise, dealer-level repair instructions for your engine platforms—trusted and ready for hands-on work.