Northern Lights Lugger M843NW3, Operator'S Manual

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OM843NW3 5/21
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Troubleshooting
ENGINE
PROBLEM POSSIBLE CAUSE RECOMMENDATION(S)
Lack of Engine Power Improper type of fuel • Consult fuel supplier and use proper type of
(continued) fuel for operating conditions.
Overheated engine • See “Engine Overheats” in next category.
Below normal engine temperature • Remove and check thermostat.
Improper valve clearance • Reset valves. Best done by dealer.
Dirty or faulty injection nozzles • Replace injectors. Best done by dealer.
• See your local dealer.
Poor cylinder compression pressure • Check bore for wear, or check alignment of
nozzle holder. Re-adjust valve clearance.
Engine Overheats Low coolant level • Fill tank or radiator to proper level, with
proper mixture of coolant.
• Check hoses for loose connections
and leaks.
Air cleaner element clogged • Clean or replace.
Keel cooling tubes • Remove paint from tubes.
have been painted (marine)
Cooling system interior dirty • 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.
V belts slipping • Fix belts to proper tension.
Engine Knocks Insufficient oil • Call your dealer.
Injection pump out of time • Call 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 • Use correct fuel for temperature.
Clogged or dirty air cleaner • Service air cleaner.
Improper valve clearance • See your dealer.
Injection nozzles dirty • See your dealer.
Injection pump out of time • See your dealer.
If you cannot correct problems with these procedures, see your Northern Lights dealer.