Inspection And Maintenance Schedule; Before Each Use; After Each Use; Every 100 Hours Of Use Or Once Yearly, Whichever Occurs First - Mercury 150 EFI Service Manual

Inspection and Maintenance Schedule

Before Each Use

1. Check that lanyard stop switch stops the engine.
2. Visually inspect the fuel system for deterioration or leaks.
3. Check outboard for tightness on transom.
4. Check steering system for binding or loose components.
5. Visually check steering link rod fasteners for proper tightness.
6. Check propeller blades for damage.

After Each Use

1. Flush out the outboard cooling system if operating in salt or polluted water.
2. Wash off all salt deposits and flush out the exhaust outlet of the propeller and gear
case with fresh water if operating in salt water.

Every 100 Hours of Use or Once Yearly, Whichever Occurs First

1. Lubricate all lubrication points. Lubricate more frequently when used in salt water.
2. Inspect and clean spark plugs.
3. Replace water separating fuel filter – EFI models.
4. Check corrosion control anodes. Check more frequently when used in salt water.
5. Drain and replace gear case lubricant.
6. Lubricate splines on the drive shaft and shift shaft.
7. Check power trim fluid.
8. Inspect battery.
9. Check control cable adjustments.
10. Check tightness of bolts, nuts, and other fasteners.
11. Replace water pump impeller (more often if overheating occurs or reduced water
pressure is noted).
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These items should be serviced by an authorized dealer.
90-883728 JULY 2001
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MAINTENANCE
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