Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 33Get this manual
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1998 Model 200225 Powerhead Port View
18 Water Hose to Fuel Cooler 19 Oil Hose to Oil Pump
20PSI Check Valve 21 Oil Reservoir 22PI use Fuel Pump 23 Water Sensor 24 Low Pressu