Northern Lights Lugger M773LW3, Operator'S Manual

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OM773LW3 11/20
26
Troubleshooting
ENGINE
PROBLEM POSSIBLE CAUSE RECOMMENDATION(S)
Lack of Engine Power,
continued
Below normal engine temperature • Remove and check thermostat.
Injection pump fuel supply • Air mixing in injection pump.
insufficient • Fuel filter clogged.
Improper valve clearance • Reset valves. Best done by dealer.
Dirty or faulty injection nozzles • Replace injectors. Best done by dealer.
Cylinder compression pressure • Adjust valve clearance
low, cylinder compression pressure • Adjust nozzle holder alignment
leakage • Check cylinder bore wear
Engine Overheats Low coolant level or cooling • Fill tank or radiator to proper level.
system defective • Check hoses for loose connections
and leaks.
• V belt slippng.
Keel cooling tubes • Remove paint from tubes.
have been painted
Cooling system needs flushing • Flush cooling system.
Defective thermostat • Remove and check thermostat.
Defective temperature gauge • Check water temperature with thermometer
and replace gauge if necessary.
Water pump impeller worn/broken • Check impeller and replace if necessary.
Engine Knocks Insufficient oil • Contact your dealer.
Injection pump out of time • Contact your dealer.
Below normal engine temperature • Check your thermostats.
• Check water temperature to see if
temperature gauge is working properly.
Engine overheating • See “Engine Overheating” section.
High Fuel Consumption Improper type of fuel, or fuel • Use correct fuel for temperature.
leaking • Check installation or tightening.
Clogged or dirty air cleaner • Service air cleaner.
Improper valve clearance • Contact your dealer.
Injection nozzles dirty • Contact your dealer.
Injection pump out of time • Contact your dealer.
Engine overloaded • Check load usage.
Engine not at proper temperature • Check thermostats.
• Check water temperature with thermometer
and replace gauge if necessary.
If you cannot correct problems with these procedures, see your Northern Lights dealer.