Flushing The Cooling System; Top Cowl Removal And Installation; Battery Inspection; Fuel System - Mercury 6 Manual

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MAINTENANCE
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 21)
* These items should be serviced by an authorized dealer.
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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 (or equivalent) flushing
attachment.
WARNING
To avoid possible injury when flushing, remove the propeller. Refer to
Propeller Replacement.
1
Remove propeller (refer to Propeller Replacement). Install the flushing
attachment so the rubber cup fits tightly over the cooling water intake.
2
Attach a water hose to the flushing attachment. Turn on the water and adjust
the flow so water is leaking around the rubber cup to ensure the engine
receives an adequate supply of cooling water.
3
Start the engine and run it at idle speed in neutral shift position.
4
Adjust water flow (if necessary) so excess water continues leaking out from
around the rubber cup to ensure the engine is receiving an adequate supply
of cooling water.
5
Check for a steady stream of water flowing out of the water pump indicator
hole. Continue flushing the outboard for 3 to 5 minutes, carefully monitoring
water supply at all times.
6
Stop the engine, turn off the water, and remove the flushing attachment.
Reinstall the propeller.
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TOP COWL REMOVAL AND INSTALLATION

Removal
1
Unlock the rear latch by pushing lever down.
2
Lift rear of cowl and disengage front hook.
Installation
Engage the front hook and push cowl back over the cowl seal.
Push cowl down and move the rear latch lever up to lock.
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BATTERY INSPECTION

The battery should be inspected at periodic intervals to ensure proper engine
starting capability.
IMPORTANT: Read the safety and maintenance instructions which
accompany your battery.
1. Turn off the engine before servicing the battery.
2. Add water as necessary to keep the battery full.
3. Make sure the battery is secure against movement.
4. Battery cable terminals should be clean, tight, and correctly installed. Positive
to positive and negative to negative.
5. Make sure the battery is equipped with a nonconductive shield to prevent
accidental shorting of battery terminals.
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FUEL SYSTEM

Avoid serious injury, or death from gasoline fire, or explosion. Carefully
follow all fuel system service instructions. Always stop the engine, and
DO NOT smoke, or allow open flames, or sparks in the area while servic-
ing any part of the fuel system.
Before servicing any part of the fuel system, stop engine and disconnect the
battery. Drain the fuel system completely. Use an approved container to collect
and store fuel. Wipe up any spillage immediately. Material used to contain spillage
must be disposed of in an approved receptacle. Any fuel system service must be
performed in a well ventilated area. Inspect any completed service work for signs
of fuel leakage.
Fuel Line Inspection
Visually inspect the fuel line and primer bulb for cracks, swelling, leaks, hardness
or other signs of deterioration or damage. If any of these conditions is found, the
fuel line or primer bulb must be replaced.
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Engine Fuel Filter
Inspect the sight bowl for water accumulation and inspect the filter element for
sediment. Clean filter as follows.
Removal
1
Turn the engine off.
2
Hold onto the cover to prevent it from turning.
3
Turn off the sight bowl.
4
Pull out the filter element and wash it with cleaning solvent.
Installation
5
Push the filter element (with open end toward cover) into cover.
6
Place the O-ring seal into the sight bowl and screw the sight bowl hand tight
into the cover.
7
Visually inspect for fuel leakage around the sight bowl by squeezing the primer
bulb until firm, forcing fuel into the sight bowl.
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EXTERIOR CARE

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Your outboard is protected with a durable baked enamel finish. Clean and wax
often using marine cleaners and waxes.
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WARNING
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