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Mercury 305 CID - Page 19

Mercury 305 CID
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1B-2 - MAINTENANCE 90-823225--1 1096
SCHEDULED MAINTENANCE THAT CAN BE PERFORMED BY DEALER
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 Equipped) - Change
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Stern Drive unit Oil - Change
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Gimbal Ring Clamping Screws
Retorque to 50-55 ft. lb. (67-74 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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Steering System - Lubricate and inspect for loose,
damage or missing parts.
End of first boating season and thereafter, every 100
hours of operation or once yearly, whichever occurs
first
Electrical System - Check for loose or damaged
wiring.
first.
Closed Cooling System Pressure Cap - Clean,
inspect and test.
Cooling System Hoses and Clamps - Inspect for
damage and deterioration. Check clamps for
tightness.
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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