MAINTENANCE SERVICE MANUAL NUMBER 22
Page 1B-66 90-860074--1 FEBRUARY 2002
Cold Weather or Extended Storage
Power Package Layup
IMPORTANT: Mercury MerCruiser strongly recommends that this service be
performed by an Authorized Mercury MerCruiser Dealer. Damage caused by freezing
IS NOT covered by the Mercury MerCruiser Limited Warranty.
CAUTION
The engine must be prepared for long storage periods to prevent internal corrosion
and severe damage.
CAUTION
Overheating from insufficient cooling water will cause engine and drive system
damage. Ensure that there is sufficient water always available at water inlet holes
during operation.
IMPORTANT: If boat has already been removed from water, before starting engine a
source of water must be supplied to water inlet holes. Refer to Flushing Cooling
System.
1. Provide sufficient water supply to water inlet holes.
2. Start the engine and operate until it reaches normal operating temperature.
3. Stop the engine.
4. Change the engine oil and filter.
5. Start the engine and operate for about 15 minutes. Ensure there are no oil leaks.
6. Flush cooling system. Refer to SECTION 1B - Flushing Seawater System.
7. Drain seawater section of cooling system and prepare for cold weather or extended
storage as outlined.
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