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Mercury MerCruiser MCM 502 Mag MPI

Mercury MerCruiser MCM 502 Mag MPI
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INSTRUMENTATION SERVICE MANUAL NUMBER 23
Page 4D-6 90-861326--1 MARCH 1999
6. Turn ignition switch to RUN.
7. Indicator needle of gauge being tested must read at position B. If not, replace gauge.
72749
Position B (Typical)
Battery Gauge
TESTING
1. Remove cables from battery and fully charge battery.
2. Connect negative (–) jumper lead from battery to gauge terminal G (GND).
3. Connect positive (+) jumper lead from battery to gauge terminal I or +12 V.
72750
Typical
4. Check gauge reading; if not as shown replace gauge.
72751
Typical
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