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3GM30F Marine

Yanmar 3GM30F · 3GM family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine confirmed

The Yanmar 3GM30F is a Yanmar marine diesel in the 3GM30 family. Yanmar designs and sells both marine and industrial diesels; internal service parts for this family are listed in the 3GM30 parts book and often sell cheaper through industrial/agricultural channels than under marine dealer pricing. — Yanmar OEM parts catalog in-repo (brands/yanmar/data/extracted/catalogs.csv)

27 hp19.9 kW
954 ccdisplacement
75×72 mmbore × stroke
3-cylcylinders
1983–2005year range (approx)
NAaspiration

F = freshwater-cooled

📋 Full specifications 🚜 Industrial / tractor base 🔧 Aftermarket 54
Cheaper-part coverage · 5/8
🚜 Base engine ✓🌀 Impeller ✓💧 Raw-water pump🛢️ Oil filter ✓⛽ Fuel filter🌡️ Thermostat ✓➰ Belt ✓⚓ Anode

A ✓ means at least one cheaper channel — aftermarket, the tractor/industrial base engine, or a standard component — exists for this engine in that category.

Parts by section · 90 assemblies

The exploded parts diagrams for the 3GM30F, grouped by system. Open a figure for its callout part numbers and per-variant quantities.

Camshaft & timing gears

Fig 3 — GEAR HOUSINGFig 22 — CAMSHAFT

Controls

Fig 53 — CONTROL DEVICEFig 54 — IDLE ADJUSTERFig 57 — SPEED REMOTE CONTROLFig 83 — SINGLE LEVER CONTROL(OPTIONAL)Fig 95 — REMOTE CONTROL DEVICE

Cooling – fresh water

Fig 34 — COOLING FRESH WATER PUMPFig 35 — COOLING FRESH WATER COOLERFig 36 — SUBTANKFig 39 — COOLING FRESH WATER LINEFig 40 — THERMOSTAT

Cooling – sea water

Fig 15 — ANTI-CORROSIVE ZINCFig 32 — COOLING SEA WATER PUMPFig 37 — KINGSTON COCKFig 38 — COOLING SEA WATER LINEFig 42 — COOLING SEA WATER LINE(OPTIONAL)Fig 76 — KINGSTON COCK(OPTIONAL)

Crankshaft & flywheel

Fig 6 — FLYWHEEL HOUSINGFig 24 — CRANKSHAFT & FLYWHEEL

Cylinder block

Fig 1 — CYLINDER BLOCK

Cylinder head & valves

Fig 16 — CYLINDER HEADFig 18 — BONNETFig 30 — L.O.PRESS.REGULATING VALVE

Electrical & instruments

Fig 56 — ENGINE STOP DEVICEFig 58 — HAND STARTFig 59 — STARTING MOTORFig 62 — BATTERY SWITCHFig 63 — WIRE HARNESSFig 68 — PANEL(A-TYPE)Fig 70 — STARTING MOTOR COMPONENT PARTFig 75 — ELECTRIC BILGE PUMP(12V)(OP)Fig 78 — ENGINE STOP CABLE(OPTIONAL)Fig 84 — PANEL(B-TYPE)(OPTIONAL)Fig 85 — PANEL(B-TYPE,NEW,OPTIONAL)Fig 86 — PANEL(A-TYPE)(OPTIONAL)

Fuel injection pump & governor

Fig 43 — FUEL INJECTION PUMPFig 44 — FUEL FEED PUMPFig 52 — GOVERNOR DRIVING

Fuel injectors & nozzles

Fig 45 — FUEL INJECTION VALVE

Fuel lines, tank & filter

Fig 46 — FUEL STRAINERFig 47 — FUEL INJECTION LINEFig 49 — FUEL LINEFig 50 — FUEL LINE(3GM30F/FVE)Fig 51 — FUEL RETURN LINEFig 55 — FUEL CONTROL DEVICEFig 77 — FUEL TANK(OPTIONAL)

Gaskets, kits & spare parts

Fig 91 — GASKET SET(OPTIONAL)

Generator (genset)

Fig 60 — GENERATORFig 71 — GENERATOR COMPONENT PART

Intake and Exhaust

Fig 19 — AIR INTAKE SILENCERFig 20 — EXHAUST MANIFOLDFig 21 — MIXING ELBOWFig 72 — MIXING ELBOW(OPTIONAL)Fig 89 — REPAIR PART(OPTIONAL)

Lubricating

Fig 5 — LUB. OIL SUMPFig 9 — BREATHERFig 27 — LUB. OIL PUMPFig 28 — LUB. OIL DIPSTICKFig 29 — LUB. OIL STRAINERFig 31 — LUB. OIL LINEFig 74 — LUB.OIL WASTE PUMP(OPTIONAL)Fig 108 — LUB. OIL COOLER

Mounting

Fig 11 — ENGINE LIFTERFig 13 — ENGINE BRACKETFig 14 — FLEXIBLE MOUNT

Pistons, rods & liners

Fig 8 — MAIN BEARING HOUSINGFig 25 — PIST0NFig 26 — CONNECTING ROD

Tools & labels

Fig 10 — LABELFig 69 — TOOLFig 88 — SPECIAL TOOL(OPTIONAL)Fig 96 — TOOL(OPTIONAL)Fig 111 — SAFETY LABEL

Transmission & drive

Fig 64 — CLUTCHFig 65 — DUMPER DISKFig 66 — TAPER COUPLINGFig 67 — CLUTCH REMOTE CONTROLFig 79 — TAPER COUPLING(OPTIONAL)Fig 80 — COUPLING(OPTIONAL)Fig 81 — STRAIGHT COUPLING(OPTIONAL)Fig 82 — SLIT COUPLING(OPTIONAL)Fig 87 — EXTENSION WIRE(OPTIONAL)Fig 92 — CLUTCH HOUSINGFig 93 — INPUT SHAFT & SUPPORT SHAFTFig 94 — OUTPUT SHAFTFig 103 — V-DRIVE HOUSINGFig 104 — INPUT SHAFTFig 105 — SUPPORT SHAFTFig 107 — V-DRIVE SHAFT
📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List— none yet
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Category
Marine
Engine family
3GM
Year range (approx)
1983–2005
Cylinders
3
Rated output
27 hp (19.9 kW)
Bore × stroke
75 × 72 mm
Displacement
954 cc
Max rpm
3600
Continuous rpm
3400
Aspiration
Naturally aspirated

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