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Mercury Outboard Maintenance Schedule

      How often should you service your Mercury outboard?

Our Mercury Outboard Maintenance Schedule outlines replacement and inspection activity based on “typical” use. Typical use is defined as:

  1. Operating your Mercury outboard at various speeds
  2. Allowing sufficient time for the engine warm-up and cool down
  3. Typical cruising speed near 3000 to 4000 rpm range

Suppose you frequently utilize your Mercury outboard in a more demanding manner than typical use, such as long periods of wide-open throttle or extended periods of trolling. In that case, your service intervals should be shorter.

100 hr / 1 year

Item Action(s)

Lanyard stop switch Check
Transom tightness Check
Steering tystem Check
Steering link rod fasteners Check
Propeller blades Check
Engine fuel filter Check
Engine timing setup Check
Corrosion control anode Check
Valve clearance Check
Power trim fluid Check
Battery Check
Control cable adjustments Check
Timing belt Check
Bolts, nuts, & other fasteners Check
Fuel system Inspect for deterioration or leaks
Thermostat Inspect for corrosion or broken spring
Grease points Lubricate
Splines on the drive shaft Lubricate
Spark plugs Check/replace
Engine oil Replace
Oil filter Replace
Gear case lubricant Replace

300 hr / 3 year

Item Action(s)

Water Pump Impeller Replace
Lanyard stop switch Check
Transom tightness Check
Steering tystem Check
Steering link rod fasteners Check
Propeller blades Check
Engine fuel filter Check
Engine timing setup Check
Corrosion control anode Check
Valve clearance Check
Power trim fluid Check
Battery Check
Control cable adjustments Check
Timing belt Check
Bolts, nuts, & other fasteners Check
Fuel system Inspect for deterioration or leaks
Thermostat Inspect for corrosion or broken spring
Grease points Lubricate
Splines on the drive shaft Lubricate
Spark plugs Check/replace
Engine oil Replace
Oil filter Replace
Gear case lubricant Replace