
Owner’s Manual Page 25
Boating Safety & Information - Section A
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b. Malfunctioning automatic choke plate or faulty
adjustment of manual choke plate
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e. Incorrect idle mixture adjustment
f. Dirty or worn injectors
3. Ignition System
a. Fouled or worn spark plug.
b. Worn points or incorrect gap on points
c. Shorted or opened circuit high tension spark
plug cables
d. Incorrect ignition timing.
4. General
a. Worn piston rings and valves
b. Engine temperature - Cold running en gines
increase CO production. Engine cooling water
system design and selection of thermostat(s)
are primary consider ati ons affecting engine
operating tempera ture. Generally, an engine
produces less CO if it operates at a rela-
tively high tem perature within manufacturer’s
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c. Exhaust Back-Pressure - Certain alter ati ons
to the exhaust system may in crease engine
exhaust back pressure and CO production.
d. Restricted engine room or compartment
ventilation
S. Maintenance - External Conditions
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1. Fouled hull bottom
2. Damaged and fouled jet nozzle(s)
T. Maintenance - Exhaust System Integrity
Gas tight integrity of exhaust systems must be main-
tained to insure that leakage of CO within the boat
does not occur. Disassembly may be required
to carry out a thorough inspection. Repair or replace
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1. Gaskets at cylinder head connection
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3. All joints
4. Hoses
5. Clamps
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8. Hangers and other supports
U. Maintenance - Ventilation Systems
Boats are equipped with ventilation systems to elimi-
nate gasoline vapors. Blowers and fans may also be
provided for ventilation and to mitigate the migration of
CO into occupied compartments. Attention should be
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1. Keeping ventilation intakes clear of debris
2. Replacing damaged hardware
3. Maintaining the integrity of the duct material and
its connections
4. Ensuring that position of duct intakes are not
obstructed or restricted, collapsed, kinked,
or crushed
5. Eliminating sags in ducts that can form a water
trap
6. Checking hangers and other supports
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9. Inspecting wiring to equipment
Summary of Contents for jet boat
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