Inspection And Maintenance Schedule - Mercury 4C Instruction Manual

Inspection and Maintenance Schedule

BEFORE EACH USE
• Visually inspect the fuel system for deterioration or leaks.
• Check outboard for tightness on transom.
• Check steering system for binding or loose components.
• Check propeller blades for damage.
AFTER EACH USE
• Flush out the outboard cooling system if operating in salt or
polluted water. See Flushing the Cooling System.
• Wash off all salt deposits with fresh water if operating in salt
water.
EVERY 100 HOURS OF USE OR ONCE YEARLY,
WHICHEVER OCCURS FIRST
• Lubricate all lubrication points. Lubricate more frequently
when used in saltwater. See Lubrication Points.
• Replace spark plug at first 100 hours or first year. After that,
inspect spark plug every 100 hours or once yearly. Replace
spark plug as needed. See Spark Plug Inspection and
Replacement.
• Drain and replace gearcase lubricant. See Gearcase
Lubrication.
•
Check carburetor adjustments. See Carburetor
Adjustment.
•
Check fuel line filter for contaminants. See Fuel System.
• Check corrosion control anode. Check more frequently
when used in saltwater. See Corrosion Control Anode.
•
Lubricate splines on the driveshaft.
•
Replace water pump impeller.
• Check tightness of bolts, nuts, and other fasteners.
BEFORE PERIODS OF STORAGE
• Refer to Storage procedure. See Storage section.
1. These items should be serviced by an authorized dealer.
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MAINTENANCE
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