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Mercury 300 XS OptiMax User Manual

Mercury 300 XS OptiMax
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MAINTENANCE
eng 67
Wash the power package exterior (cowl, midsection, and gearcase) with
fresh water.
Flush the propeller and gearcase exhaust outlet with fresh water.
Remove the cowl and wipe off any saltwater spray with a damp cloth.
EVERY 25 HOURS OR EVERY 30 DAYS OF SALTWATER OR
POLLUTED WATER USE
Spray the powerhead and all external, unpainted metal surfaces (except
anodes) with Corrosion Guard.
EVERY 25 HOURS OR EVERY 30 DAYS, WHICHEVER OCCURS FIRST
Visually inspect the front and side cowl latches for tightness. Tighten if
necessary.
Visually inspect the fuel and oil systems for deterioration or leaks.
Visually check steering link rod fasteners for wear.
Lubricate all components listed in Lubrication Points.
Check all attachment hardware for proper torque tightness.
Check the level and condition of the gearcase lubricant.
Check the alternator belt condition.
EVERY 50 HOURS OR ONCE A YEAR, WHICHEVER OCCURS FIRST
Lubricate the splines on the driveshaft.
Lubricate the entire length of the driveshaft with Extreme Grease.
Lubricate the splines on the propeller shaft. Refer to Lubrication Points.
Drain and replace the gearcase lubricant.
Check the spark plug gap and replace if necessary.
Inspect the alternator and compressor for deterioration and replace if
necessary.
Check the fuel pressure. This item should be serviced by an authorized
dealer.
Check the control cable adjustments.
Inspect the battery.
Check the corrosion control anodes.
Check the power trim fluid.
EVERY 100 HOURS OR ONCE A YEAR, WHICHEVER OCCURS FIRST
Replace the water pump impeller (more often if overheating occurs or
reduced water pressure is noted). This item should be serviced by an
authorized dealer.
Use QuicKleen in the fuel.

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Mercury 300 XS OptiMax Specifications

General IconGeneral
BrandMercury
Model300 XS OptiMax
CategoryOutboard Motor
LanguageEnglish

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