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Home›Engines›Yanmar 3TNE78A-ADCL

Yanmar 3TNE78A-ADCL Engine Engine

The Yanmar 3TNE78A-ADCL is a 3-cylinder engine. It powers generator sets from Northern Lights, including the NL378.

Also known as: Yanmar 3TNE78A-ADCL

Part of the Yanmar 3TNE78A engine family — 2 variants share parts & fitment.

3
Cylinders

Engine specifications

Cylinders3

Generator sets powered by this engine

1
Northern Lights NL378

Common problems

2
  • Temperature gauge shows temperature within normal range but shutdown is activated
    Fix: Check the engine crankcase oil level. If the oil level is low, fill with recommended lubricating oil and restart. Watch the oil pressure gauge carefully and shut off the engine if it does not show a normal reading (20-60 PSI) after a few seconds of operation. If the oil level is normal, DO NOT restart the engine. Call your dealer for assistance.
  • Temperature gauge shows temperature above 205°F (97°C)
    Fix: Shut off the engine immediately. Use the Trouble Shooting Guide in this manual to isolate the cause of the overheat.

Compiled from service & troubleshooting documentation across every generator set that uses the Yanmar 3TNE78A-ADCL.

Parts cataloged across the Yanmar 3TNE78A family

67
Part #DescriptionCategory
129619-12520Housingair_filter
24-27301Air filter elementair_filter
24-27302Air filter elementair_filter
119831-42290Drive Beltbelt
6-1001Control panelcontrol_panel
119810-55650Elementfuel_filter
24-50012Fuel filter elementfuel_filter
24-55650Spin-on fuel filterfuel_filter
24-S50002Primary fuel filterfuel_filter
104200-59170Gasketgasket
119813-12110Intake Manifold Gasketgasket
119813-13110Exhaust Manifold Gasketgasket
119818-01330Cylinder Head Gasketgasket
119865-11310Bonnet Gasketgasket
121000-13201Gasket Manifold to Mufflergasket
124240-01883Gasketgasket
124465-44950Gasketgasket
129150-32020Gasketgasket
129150-35041Gasketgasket
129150-35111Gasketgasket
129150-42020Cooling Water Pump Gasketgasket
129150-49811Gasketgasket
129150-77511Gasketgasket
129155-52020Gasketgasket
129795-49551Gasketgasket
23414-100000Gasketgasket
719989-92600Gasket Setgasket
977770-01212Liquid Gasketgasket
119820-44560Hose, Radiator Inlethose
129619-12210Hosehose
171301-49010Hose, Radiator Inlethose
171301-49020Hose, Radiator Outlethose
41-0101274" Hose 5/16" ID Push-Onhose
119818-53000Nozzle Assemblyinjector
719800-53100Fuel Injectorinjector
24-07301Oil filteroil_filter
15-01001Sealing Washerother_service
22-40018Circuit Breaker 10 Ampother_service
22-42047Relay, SPDT 12V 50Aother_service
119810-42001Coolant Pumppump
129001-32001Oil Pump Assemblypump
129100-52100Fuel Feed Pumppump
719989-51310Injection Pumppump
102103-55520O-Ringseal
119810-01780Oil Sealseal
121850-51960O-Ringseal
124160-11340SEAL, VALVE STEMseal
124950-11340SEAL, VALVE STEMseal
129129-77350O-Ringseal
129150-42320O-RINGseal
129795-01800Oil Sealseal
22190-080002Seal Washerseal
22190-220002Seal Washerseal
24311-000120O-Ringseal
24311-000160O-Ringseal
24311-000320O-RING, 1AP32.0seal
24311-240100O-Ringseal
24341-000240O-Ringseal
24341-000280O-Ringseal
24341-000500O-Ring, 1A S-50.0seal
719810-01650Rear Main Seal Assemblyseal
119600-34800Oil Pressure Switchsensor
121250-44901Temperature Switch 110°Csensor
121460-39450Pressure Switchsensor
22-41016Oil Pressure Sender - Single Stationsensor
22-45201Temperature Sender 250°F Standard Groundsensor
129155-49800Thermostatthermostat

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Aftermarket parts that fit this engine

55
129155-42350 PartsGeek 3TN75 PartsGeek 3TN82 PartsGeek 3TN84 PartsGeek 3TNV78 PartsGeek 3TNC78 PartsGeek 3TNE82 PartsGeek 3TNE88 PartsGeek 3TNV82 PartsGeek 3TNV88 PartsGeek 124700-44740 PartsGeek 3TN66E PartsGeek 3TN75E PartsGeek 3TN82E PartsGeek 3TN84E PartsGeek 3TNA68L PartsGeek 3TNC78E PartsGeek 3TNE74 PartsGeek 3TNE82A PartsGeek 4TN82E PartsGeek 129795-49551 PartsGeek 2TNE68 PartsGeek 3GP88 PartsGeek 3TN78L PartsGeek 3TN82TE PartsGeek 3TN84L PartsGeek 119625-11900 PartsGeek 3JH2 PartsGeek 3TN78 PartsGeek 3TN86 PartsGeek 3TNE78A PartsGeek 3TNE84 PartsGeek 26106-080602 PartsGeek 3TN75L PartsGeek 3TN82L PartsGeek 129795-01800 PartsGeek 3TN86L PartsGeek 119810-14580 PartsGeek 3TN75E-G1 PartsGeek 3TN75E-HP PartsGeek 3TN84E-G1 PartsGeek 3TNC80L-RB1 PartsGeek 3TNE78A-B1 PartsGeek 3TNE82A-BVA PartsGeek 3TNE82A-TB PartsGeek 4TN82E-G1 PartsGeek 119810-01730 PartsGeek 3TNC80L PartsGeek 3TNV82A PartsGeek 119810-01780 PartsGeek 4TN82L PartsGeek 129150-77202 PartsGeek 3TNE68 PartsGeek 3TNV76 PartsGeek B15-3 PartsGeek

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

Also used in

4
  • Antonio Carraro 4400HST — Tractor
  • John Deere 4115 — Tractor
  • John Deere 4200 — Tractor
  • John Deere 855 — Tractor

Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.

Common questions

Which generators use the Yanmar 3TNE78A-ADCL engine?

The Yanmar 3TNE78A-ADCL powers 1 generator set(s), including Northern Lights NL378.

What is a common problem with the Yanmar 3TNE78A-ADCL engine?

A commonly reported issue on generators using the Yanmar 3TNE78A-ADCL is: Temperature gauge shows temperature within normal range but shutdown is activated. Fix: Check the engine crankcase oil level. If the oil level is low, fill with recommended lubricating oil and restart. Watch the oil pressure gauge carefully and shut off the engine if it does not show a normal reading (20-60 PSI) after a few seconds of operation. If the oil level is normal, DO NOT restart the engine. Call your dealer for assistance..