Lombardini LMG4000 Marine Generator

Description

Cramped sailboat engine compartments choke conventional units, making the Lombardini LMG4000 Marine Generator the ideal compact power plant for offshore cruisers and small commercial workboats. Operating at 3600 RPM, this generator produces 3.2 kW continuous output and 4.0 kVA surge power at 120V 60Hz to sustain battery chargers, galley microwaves, and small watermakers.

Surrounded by a lightweight fiberglass sound shield, the single-cylinder 349cc Lombardini 15LD 350 four-stroke diesel engine delivers steady mechanical drive through direct coupling. The synchronous brushless alternator incorporates 100 percent copper windings cooled via raw-water heat exchanger circuits. Weighing 198 lbs dry, this ultra-compact marine generator features exterior dimensions measuring 24.2 inches long by 16.5 inches wide by 20.8 inches high.

Key Features of Lombardini LMG4000

Vessel owners who buy Lombardini LMG4000 marine generator hardware obtain compact commercial power equipment built to fit tight bilge compartments. The full water-cooling circuit covers both engine and alternator, eliminating hot air exhaust inside narrow boat machinery spaces.

• 3.2 kW continuous electrical output powers onboard battery inverter chargers, galley appliances, and water heaters.
• 4.0 kVA peak surge capacity absorbs inductive starting spikes from small refrigeration compressors and bilge pumps.
• Brushless synchronous alternator eliminates carbon brushes and slip rings to minimize periodic maintenance chores.
• LMG4000 compact marine design fits into narrow sailboat lazarettes inaccessible to conventional marine power sets.
• Full freshwater cooling circulates through the alternator housing to prevent thermal buildup inside vessel compartments.
• Heavy fiberglass sound capsule suppresses mechanical diesel knock, maintaining quiet conditions aboard recreational vessels.
• Cast-iron cylinder liner ensures compression integrity across hundreds of commercial offshore running hours.
• Automatic emergency stop circuits halt the engine upon loss of raw-water coolant flow or low oil pressure.

Dynamic Voltage Drop Acoustic Metrics

Generating 54 dB(A) at 23 feet inside its sound enclosure, this generator runs without disturbing crew rest quarters. An integrated capacitor voltage regulator maintains steady 60 Hz electrical output, holding voltage drop within 3 percent under steady electrical loads. The engine absorbs momentary compressor starts from small cabin chillers, burning a modest 0.28 GPH of diesel fuel at half load.

Bilge Placement Siphon Break Specifications

Secure the mounting base to structural stringers above bilge flood lines, ensuring 10 inches of clearance around access covers. Install an anti-siphon valve loop at least 12 inches above the vessel static waterline on the cooling water injection line to prevent siphon flooding. Ground wiring interfaces through an isolated return to prevent galvanic corrosion.

Service Handling Periodic Maintenance Protocols

Unlatching the top and side sound capsule panels provides unhindered access to check oil dipsticks and fuel priming levers. This small diesel generator is not engineered for whole-ship multi-ton central air conditioning, commercial deck cranes, or dry industrial operations.

• Inspect sea strainers for weed blockage and check engine oil before each shift.
• Change engine lubricating oil and replace fuel filter elements every 100 runtime hours.
• Inspect raw-water pump impeller condition and clean air filters every 250 runtime hours.

Factory Guarantee Crate Shipping Contents

Lombardini Marine backs this unit with a 2-Year limited warranty covering the diesel engine, alternator assembly, and cooling heat exchangers. The freight carton contains the Lombardini LMG4000 generator core, digital remote start panel, external electric fuel pump, anti-vibration mount set, and operator manual.