Service manual
CLOSED COOLED MODELS
SERVICE MANUAL NUMBER 26
90-861329--1 MARCH 1999 Page 6B-21
5. Perform all maintenance tasks listed in the MAINTENANCE SCHEDULES, except
those performed during the power package lay up procedure.
6. Perform all checks in the BEFORE STARTING column of the Operation and Mainte-
nance Manual OPERATION CHART.
CAUTION
Refer to FLUSHING COOLING SYSTEM before starting engine.
7. Supply water to the seawater pickup pump as outlined in “Flushing Cooling System.”
8. Start engine and closely observe instrumentation to make sure that all systems are func-
tioning correctly.
9. Carefully inspect engine for fuel, oil, fluid, water and exhaust leaks.
10. Check steering system and shift and throttle controls for proper operation.
11. For drive unit, refer to appropriate sterndrive manual.
Filling Closed Cooling Section
NOTICE
See “Specifications” for approximate closed cooling system capacity and coolant
recommendations
WARNING
Do not remove coolant cap when engine is hot. Coolant may discharge violently.
CAUTION
Alcohol or Methanol based antifreeze or plain water are not recommended for use
in fresh water section of cooling system at any time.
CAUTION
Front of engine should be higher than rear to purge trapped air out of the system
during initial filling. This will minimize the possibility of air being trapped in the
closed cooling section which can cause engine to overheat.
1. Remove coolant cap on heat exchanger.
2. Fill closed cooling system with coolant mixture through heat exchanger fill neck until
coolant level is 1 in. (25 mm) below filler neck.
CAUTION
Avoid seawater pickup pump impeller damage and subsequent overheating dam-
age to sterndrive unit. DO NOT operate engine without water being supplied to sea-
water pickup pump.
CAUTION
Models with belt drive seawater pickup pump must be in the water when running
engine because garden hose will not supply enough water to system at higher rpm.
3. With pressure cap off, start engine and run at fast idle (1500-1800 rpm). Add coolant
solution to heat exchanger, as required, to maintain coolant level 1 in. (25 mm) below
filler neck.
Index