18
90-10122R30
GB
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MAINTENANCE
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OUTBOARD CARE
To keep your outboard in the best operating condition, it is important that your
outboard receive the periodic inspections and maintenance listed in the Inspection
and Maintenance Schedule. We urge you to keep it maintained properly to ensure
the safety of you and your passengers and retain its dependability.
WARNING
Neglected inspection and maintenance service of your outboard or at-
tempting to perform maintenance or repair on your outboard if you are
not familiar with the correct service and safety procedures could cause
personal injury, death, or product failure.
Record maintenance performed in Maintenance Log at the back of this book. Save
all maintenance work orders and receipts.
SELECTING REPLACEMENT PARTS FOR YOUR
OUTBOARD
We recommend using original Mercury Precision or Quicksilver replacement parts
and Genuine Lubricants.
WARNING
Using a replacement part that is inferior to the original part could result
in personal injury, death, or product failure.
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c
d
b
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f
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EMISSION CERTIFICATION LABEL
An emission certification label, showing emission levels and engine specifications
directly related to emissions, is placed on the engine at time of manufacture.
a.Idle Speed
b.Engine Horsepower
c.Timing Specification
d.Recommended Spark Plug & Gap
e.Valve Clearance (if Applicable)
f. Family Number
g.Maximum Emission Output for
the Engine Family
h.Piston Displacement
i. Date of Manufacture
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OWNER RESPONSIBILITY
The owner/operator is required to have engine maintenance performed to maintain
emission levels within prescribed certification standards.
The owner/operator is not to modify the engine in any manner that would alter the
horsepower or allow emissions levels to exceed their predetermined factory
specifications.
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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. (page 72)
6. Check propeller blades for damage.
After Each Use
1. Flush out the outboard cooling system if operating in salt or polluted water.
(page 69)
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. (page 79)
2. Inspect and clean spark plugs. (page 78)
3. Check engine fuel filter for contaminants. (page 71)
4. Adjust carburetor(s) (if required)∗
5. Check engine timing setup.∗
6. Check corrosion control anodes. Check more frequently when used in salt
water. (page 73)
∗ These items should be serviced by a authorized dealer.
7. Drain and replace gear case lubricant. (page 81)
8. Lubricate splines on the drive shaft.∗
9. Check power trim fluid. (page 80)
10.Inspect battery. (page 78)
11. Check control cable adjustments.∗
12.Remove engine deposits with Mercury Precision or Quicksilver Power Tune
Engine Cleaner.
13.Check tightness of bolts, nuts, and other fasteners.
Every 300 Hours of Use or Three Years
1. Replace water pump impeller (more often if overheating occurs or reduced
water pressure is noted).*
Before Periods of Storage
1. Refer to Storage procedure. (page 83)
∗ These items should be serviced by a authorized dealer.
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