Cleaning Care For The Powerhead (Saltwater Use); Battery Inspection - Mercury 150 FourStroke Operation & Installation Manual

2. Wash the cowls with clean water and a mild nonabrasive soap. Use a soft
clean cloth when washing.
3. Dry thoroughly with a soft clean cloth.
4. Wax the surface using a nonabrasive automotive polish (polish designed
for clear coat finishes). Remove the applied wax by hand using a clean
soft cloth.
5. To remove minor scratches, use Mercury Marine Cowl Finishing
Compound (92‑859026K 1).

Cleaning Care for the Powerhead (Saltwater Use)

If the outboard is operated in saltwater, remove the top cowl and flywheel
cover. Inspect the powerhead and powerhead components for salt buildup.
Wash off any salt buildup from the powerhead and powerhead components
with fresh water. Keep water spray out of the air filter/intake and alternator.
After washing, allow the powerhead and components to dry. Apply Quicksilver
or Mercury Precision Lubricants Corrosion Guard spray on the external metal
surfaces of the powerhead and powerhead components. Do not allow the
Corrosion Guard spray to come in contact with the alternator drive belt or belt
pulleys.
IMPORTANT: Do not allow lubricant or Corrosion Guard spray to come in
contact with the alternator drive belt or the belt pulleys. The alternator drive belt
could slip and be damaged if it becomes coated with any lubricant or Corrosion
Guard spray.
Tube Ref
Description
No.
Corrosion Guard
120

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. Ensure the battery is secure against movement.
3. Battery cable terminals should be clean, tight, and correctly installed.
Positive to positive and negative to negative.
4. Ensure the battery is equipped with a nonconductive shield to prevent
accidental shorting of battery terminals.
MAINTENANCE
Where Used
External metal surfaces of the powerhead
and powerhead components.
66
Part No.
92-802878 55
eng