90-10100R30
13
GB
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MAINTENANCE
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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.
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c
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b
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i
g
a.Engine Horsepower
b.Timing Specification
c.Recommended Spark Plug & Gap
d.Valve Clearance (if Applicable)
e.Family Number
f. Maximum Emission Output for
the Engine Family
g.Piston Displacement
h.Date of Manufacture
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. Visually inspect the fuel system for deterioration or leaks.
2. Check outboard for tightness on transom.
3. Check steering system for binding or loose components.
4. Check propeller blades for damage.
After Each Use
1. Flush out the outboard cooling system if operating in salt or polluted water.
(page 13)
2. Wash off all salt deposits 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 14)
2. Inspect and clean spark plug. (page 14)
3. Drain and replace gear case lubricant. (page 15)
4. Check corrosion control anode. (page 14)
5. Lubricate splines on the drive shaft.
∗
6. Replace water pump impeller.∗
7. Check tightness of bolts, nuts, and other fasteners.
Before Periods of Storage
1. Refer to Storage procedure. (page 15)
∗ These items should be serviced by an authorized dealer.
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TOP COWL REMOVAL AND INSTALLATION
Removal
1 Open cowl latches on both sides of cowl.
2 Lift top cowl off engine.
Installation
3 Position top cowl over engine. Place the rear of the cowl on first then the front.
Engage cowl latches to fasten cowl.
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EXTERIOR CARE
Your outboard is protected with a durable baked enamel finish. Clean and wax
often using marine cleaners and waxes.
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FLUSHING THE COOLING SYSTEM
Flush the internal water passages of the outboard with fresh water after each use
in salt, polluted, or muddy water. This will help prevent a buildup of deposits from
clogging the internal water passages.
Use a Mercury Precision or Quicksilver accessory hose coupling flushing
attachment.
Note: Do not run the engine while flushing the cooling system.
1. Remove plug and gasket (a) and thread–in hose coupling (b).
2. Attach a water hose to the hose coupling. Turn on the water gently and flush
the cooling system for 3 to 5 minutes.
3. Remove the thread–in hose coupling and reinstall plug and gasket.
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PROPELLER REPLACEMENT
WARNING
If the propeller shaft is rotated while the engine is in gear, there is the
possibility that the engine will crank over and start. To prevent this
type of accidental engine starting and possible serious injury caused
from being struck by a rotating propeller, always remove the spark
plug lead when you are servicing the propeller.
1 Remove the spark plug lead to prevent engine from starting.
2 Models with gear shift – Move gear shift lever into neutral.
3 Straighten and remove cotter pin.
4 Pull propeller straight off shaft. If propeller is seized to the shaft and cannot be
removed, have the propeller removed by an authorized dealer.
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