Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Prime power | 33 kW |
| Oil capacity | 9.0 L |
| Alternator | Northern Lights W-Series (Class H insulation) |
| Voltage options | 120 V, 240 V |
| Phase | 1 |
| Rated current | 137 A |
| Power factor | 1 |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 1386×594×766 mm |
| Dry weight | 553 kg |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | air filter | — | 200 hr | find | |
| Fuel filter | primary fuel filter element | 24-50012 | 200 hr | Amazon eBay | |
| Fuel filter | secondary fuel filter | 24-52020 | 200 hr | Amazon eBay $24.71 | |
| Oil filter | oil filter | 24-05401 | 200 hr | Amazon eBay $33.15 | |
| Belt | V-belt | — | 50 hr | find | |
| Coolant | antifreeze mixture | — | 600 hr | ||
| Oil | oil | 9.0 l | — | 200 hr |
Common questions
What fuel does the Northern Lights M984 use?
The Northern Lights M984 runs on diesel.
What alternator does the Northern Lights M984 use?
The Northern Lights M984 uses a Northern Lights W-Series alternator. Insulation class H.
What oil filter does the Northern Lights M984 use?
The Northern Lights M984 uses oil filter part number 24-05401.
What fuel filter does the Northern Lights M984 use?
The Northern Lights M984 uses fuel filter part numbers 24-50012, 24-52020.
Troubleshooting
18Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Engine Runs Irregularly or Stalls Frequently | Below normal engine temperature Clogged primary fuel filter element Clogged secondary fuel filter element Water or dirt in the fuel system Dirty or faulty injection nozzles Air in fuel system Improper type of fuel | Remove and check thermostat. Clean or replace filter element. Replace secondary filter element. Drain, flush, fill and bleed system. Inspect clamps and hoses on suction side of fuel pump for air leak. Consult fuel supplier and use proper type of fuel for operating condition. |
| Lack of Engine Power | Engine overloaded Intake air restriction Clogged primary fuel filter element Clogged secondary fuel filter element Improper type of fuel Overheated engine Below normal engine temperature Improper valve clearance Dirty or faulty injection nozzles | Reduce the load. Service air cleaner. Clean or replace filter element. Replace filter element. Consult fuel supplier and use proper type of fuel for operating conditions. See “Engine Overheats” in next category. Remove and check thermostat. Reset valves. Best done by dealer. See your local dealer. |
| Engine Overheats | Engine overloaded Low coolant level Keel cooling tubes (marine sets) have been painted Cooling system needs flushing Defective thermostat Defective temperature gauge Water pump impeller worn or broken | Reduce the electrical load. Fill tank or radiator to proper level. Check hoses for loose connections and leaks. Remove paint from tubes. Flush cooling system. Remove and check thermostat. Check water temperature with thermometer and replace gauge if necessary. Check the impeller and replace if necessary. |
| Engine Knocks | Insufficient oil Injection pump out of time Below normal engine temperature Faulty fuel injector Engine overheating | Call your dealer. Call your dealer. Check your thermostats. Check water temperature to see if temperature gauge is working properly. See “Engine Overheating” section. |
| High Fuel Consumption | Improper type of fuel Clogged or dirty air cleaner Engine overloaded Improper valve clearance Injection nozzles dirty Injection pump out of time Engine not at proper temperature | Use correct fuel for temperature. Service air cleaner. Reduce the electrical load. See your dealer. See your dealer. See your dealer. Check your thermostats. Check water temperature with thermometer and replace gauge if necessary. |
| Below Normal Engine Temperature | Thermostats not working properly Temperature gauge not working properly | Check thermostats. Check water temperature with thermometer. |
| Low Oil Pressure | Low oil level Improper type of oil Partially plugged oil filter | Fill crankcase to proper level. Drain and fill crankcase with correct oil. Replace filter. |
| High Oil Consumption | Break-in period Crankcase oil too light Oil leaks Crankcase over full | Oil consumption decreases after break in. Use proper viscosity oil. Check for leaks in lines around gaskets and drain plug. Remove excess oil. |
| Engine Emits Black or Gray Exhaust Smoke | Clogged or dirty air cleaner Defective muffler (back pressure too high) Improper fuel Engine overloaded Injection nozzles dirty Engine out of time | Service air cleaner. Have dealer check back pressure. Use correct fuel for temperature. Reduce the electrical load. See your dealer. See your dealer. |
| Engine Emits White Smoke | Improper fuel Cold engine Defective thermostat Engine out of time | Use correct fuel for temperature. Warm up engine to normal operating temperature. Remove and check thermostat. See your dealer. |
| Battery Will Not Charge | Loose or corroded connections, Sulfated or worn out batteries, Loose or defective alternator belt | Clean and tighten battery connections. Check specific gravity of each battery. Check electrolyte level of each battery. Adjust belt tension. Replace belt. |
| Starter Inoperative | Check DC circuit breaker, Loose or corroded connections, Low battery condition, Defective electrical system ground wire | If the breaker is tripped, reset it. Clean and tighten loose battery and harness plug connection. Check specific gravity of each battery. Check electrolyte level of each battery. Repair or replace. |
| Starter Cranks Slowly | Low battery condition, Check specific gravity of each battery, Check electrolyte level of each battery, Crankcase oil too heavy, Battery is too small, Battery cables are too small | If low, fill cells with distilled water. Fill with oil of appropriate viscosity. Clean and tighten loose connections. |
| Entire Electrical System Does Not Function | Check DC circuit breaker, Faulty connection, Sulfated or worn out batteries | If breaker is tripped, reset it. Clean and tighten battery and harness plug connections. Check specific gravity and electrolyte level of each battery. |
| Engine Hard to Start or Will Not Start | Improper starting procedure No fuel Low battery condition Excessive resistance in starting circuit Crankcase oil too heavy Improper type of fuel Water, dirt or air in fuel system Clogged primary fuel filter element Clogged secondary fuel filter element Dirty or faulty injection nozzles | See starting section of this manual. Take special note of Bypass Switch operation. Check level of fuel in fuel tank. Check electrolyte level and condition. Clean and tighten all battery connections. Use oil of proper viscosity. Consult fuel supplier and use proper type of fuel for operating condition. Drain, flush, fill and bleed system. Clean or replace filter element. Replace filter element. Have your dealer check injection nozzles. |
| Dirty or faulty injection nozzles | Have your dealer check injection nozzles. | |
| Air in fuel system | Inspect clamps and hoses on suction side of fuel pump for air leak. | |
| Improper type of fuel | Consult fuel supplier and use proper type of fuel for operating condition. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
6| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 24-05401 | Oil filter | Oil filter | Amazon eBay $33.15 | |
| 24-25402 | Air filter | Air filter | Amazon eBay $24.95 | |
| 24-50002 | Primary Fuel Filter Complete Unit | 1 | Fuel filter | Amazon eBay |
| 24-50012 | Fuel filter element | 1 | Fuel filter | Amazon eBay |
| 24-52020 | Fuel Filter | 1 | Fuel filter | Amazon eBay $24.71 |
| OM9B4W | Air filter elements | 1 | Air filter | buy |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| 8.7 | 2.3 | ||
| 50% | 5.3 | 1.4 | |
| 100% | 9.8 | 2.6 | |
| Prime | |||
| Standby |
Available documents
Spec sheet — M984K (Northern Lights)Spec sheet — M984W (Northern Lights)Owner's manual — OM984K (Northern Lights)Parts manual — P984-I (Northern Lights)Parts manual — P984 (Northern Lights)Parts manual — l653-filter-chart-for-website (Northern Lights)