Mercury Bravo Sterndrive 520 - Page 119

Low Engine Oil Pressure
Possible Cause Remedy
Insufficient oil in system. Check and add oil.
Excessive oil in system
(causing it to become aerated).
Check and bring oil to required level.
Check for cause of excessive oil (improper
filling, defective fuel pump, etc.).
Diluted or improper viscosity oil.
Change oil and oil filter, using correct
grade and viscosity oil. Determine cause
for dilution (excessive idling, faulty fuel
pump, etc.).
Faulty gauge or sender.
Test with mechanical shop gauge; test
sender.
Excessive oil temperature. Faulty oil thermostat.
Engine mechanical: oil pump,
excessive bearing clearance,
etc.
Repair as necessary.
Battery Will Not Come Up On Charge
Possible Cause
Remedy
Excessive current draw from
battery.
Turn off non‑essential accessories.
Loose or dirty electrical
connections or damaged wiring.
Check all associated electrical
connections and wires (especially
battery cables). Clean and tighten faulty
connections. Repair or replace damaged
wiring.
Alternator drive belt loose or in
poor condition.
Replace and/or adjust.
Defective battery. Test battery.
Power Trim Does Not Operate (Motor Doesn't Run)
Possible Cause
Remedy
Open fuse. Replace fuse.
Loose or dirty electrical
connections or damaged
wiring.
Check all associated electrical connections
and wires (especially battery cables). Clean
and tighten faulty connections. Repair or
replace damaged wiring.
TROUBLESHOOTING
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