Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 204Get this manual
FUEL SYSTEM
Emission Control Information
PART37-855211 27
This engine conforms to 1998 Model Year U.SEPA regulations for marine SI enginesRefer to Owners Manual for required maintenance
This engine is certified to operate on regular 87 octane unleaded fuel (R+M)2 Idle Speed (in gear): 550 RPM Timing: Not Adjustable ECM Controlled Spark Plug: Champion RC12MC4
Exhaust Emission Control Systems: None Engine Lubricants: Quicksilver FuelOil Ratio: Not Premium Plus TC-W3 2-Cycle Adjustable Outboard Oil ECM Controlled Family: WM9XM03.0220 FEL: 100.00 GMKW-HR