GASOLINE ENGINE 8.1 S INBOARD MODELS
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TESTING
NOTE: The boat being tested shall be a standard production boat fitted as it would be for
delivery to a dealer.
NOTE: Temperature test meter used shall be of the type that can be read without opening
the engine cover.
IMPORTANT: During the test, in Step 1., engine compartments are to remain closed.
No outside air is to be forced into the engine compartment during the test and the
bilge blower should not be running.
1. Engine Running and Heat Soak Test:
a. Use 1 meter and 2-3 thermocouples. Place one thermocouple at the flame arrestor
to measure the inlet air temperature.
b. Place the second thermocouple at the fuel pump to measure the inlet fuel tempera-
ture.
c. A third thermocouple is needed if the fuel supply line between the tank and the fuel
pump is higher than the fuel pump. Place the third thermocouple at the highest point
of the supply line to measure the temperature of the fuel at that point.
2. Start engine and operate until engine is at normal operating temperature.
3. Operate engine at 1500 rpm (in NEUTRAL gear) for 15 minutes. Record temperature
readings at 5 minute intervals.
4. After 15 minutes at 1500 rpm, shut off engine and continue to record temperature
readings at 5 minute intervals for the next 45 minutes.
5. After the 45 minute heat soak test, start engine and idle (in NEUTRAL gear) for 20
minutes. Continue to record temperature readings at 5 minute intervals.
IMPORTANT: If the temperature at any location exceeds specifications, the engine
compartment will need additional ventilation until temperatures remain below these
specifications.
