Mercury Optimax 200/225 from year 2000 Service Manual., Page 135Get this manual
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IGNITION
ENGINE RPM TPI VOLTS BATTERY VOLTS PWR VOLTS COOL TMP STB COOL TMP PRT MAP PSI AIR TMP BLOCK PSI OIL INJ CNT TPI AIR COM TMP OIl LEVEL FUEL LEVEL AVAILABLE PWR SHIFT TRIM PITOT P