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Mercury 305 CID - Page 22

Mercury 305 CID
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MAINTENANCE - 1B-590-823225--1 1096
SCHEDULED MAINTENANCE THAT SHOULD BE PERFORMED BY A DEALER (CONTINUED)
NOTE: Only perform maintenance which applies to your particular power package.
Task Interval
Seawater Pickup Pump - Disassemble and inspect
Whenever insufficient seawater flow is suspected.
(If operating temperature exceeds normal range.)
Crankcase Oil and Filter Change
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Ignition system - Clean and Inspect condition.
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Flame Arrestor and Crankcase Ventilation Hose -
Clean and Inspect.
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Positive Crankcase Ventilation (PCV) Valve (If So
Equipped) - Change
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Stern Drive unit Oil - Change
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Gimbal Ring Clamping Screws - Retorque to 40
ft. lb. (54 N·m)
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Rear Engine Mounts - Check torque to 30-40 ft. lb.
(47-54 N·m)
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Gimbal Bearing - Lubricate
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Cooling System - Clean and Inspect
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Engine Alignment - Check
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Engine Coupling Universal Joint Shaft Splines -
Lubricate
End of first boating season and thereafter, every
100 hours of operation or once yearly whichever
Steering System - Lubricate and inspect for loose,
damage or missing parts.
100 hours of operation or once yearly, whichever
occurs first.
Electrical System - Check for loose or damaged
wiring.
Cooling System Hoses and Clamps - Inspect for
damage and deterioration. Check Clamps for
tightness.
Closed Cooling System Pressure Cap - Clean,
inspect and test.
Continuity Circuit - Check components for loose
connections, broken or frayed wires.
Shift and Throttle Cable and Linkage - Lubricate
and inspect for loose, damaged or missing parts
Engine Exhaust System - Inspect externally for
damage, deterioration and restrictions. Check for
tightness.
Ignition System - Check Timing and adjust as
needed.

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