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3GM30 Marine

Yanmar 3GM30 · 3GM family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine confirmed

The Yanmar 3GM30 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

137 kgengine dry

9.8 kggearbox

1983–2005year range (approx)

NAaspiration

📋 Full specifications 15 🚜 Industrial / tractor base 🔧 Aftermarket 79

Cheaper-part coverage · 6/8

🚜 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 · 113 assemblies

The exploded parts diagrams for the 3GM30, grouped by system. Open a figure for its callout part numbers and per-variant quantities.

Bilge & accessory pumps

Fig 66 — BILGE PUMP(STD,OPTIONAL)Fig 67 — BILGE PUMP(DX,OPTIONAL)

Camshaft & timing gears

Fig 3 — GEAR HOUSING Fig 20 — CAMSHAFT

Controls

Fig 48 — CONTROL DEVICE Fig 49 — IDLE ADJUSTER Fig 52 — SPEED REMOTE CONTROL Fig 76 — SINGLE LEVER CONTROL(OPTIONAL)Fig 95 — REMOTE CONTROL DEVICE

Cooling – fresh water

Fig 32 — COOLING FRESH WATER PUMP Fig 33 — COOLING FRESH WATER COOLER Fig 36 — COOLING FRESH WATER PIPE Fig 36 — SUBTANK Fig 37 — THERMOSTAT Fig 39 — COOLING FRESH WATER LINE

Cooling – sea water

Fig 15 — ANTI-CORROSIVE ZINC Fig 30 — COOLING SEA WATER PUMP Fig 35 — COOLING SEA WATER PIPE Fig 37 — KINGSTON COCK Fig 38 — COOLING SEA WATER LINE Fig 39 — COOLING SEA WATER PIPE(OPTIONAL)Fig 42 — COOLING SEA WATER LINE(OPTIONAL)Fig 68 — KINGSTON COCK(OPTIONAL)

Crankshaft & flywheel

Fig 6 — FLYWHEEL HOUSING Fig 22 — CRANKSHAFT & FLYWHEEL

Cylinder block

Fig 1 — CYLINDER BLOCK

Cylinder head & valves

Fig 14 — CYLINDER HEAD Fig 16 — BONNET Fig 28 — L.O.PRESS.REGULATING VALVE

Electrical & instruments

Fig 51 — ENGINE STOP DEVICE Fig 53 — HAND START Fig 54 — STARTING MOTOR Fig 58 — WIRE HARNESS Fig 62 — BATTERY SWITCH Fig 68 — PANEL(A-TYPE)Fig 70 — ENGINE STOP CABLE(OPTIONAL)Fig 70 — STARTING MOTOR COMPONENT PART Fig 71 — BATTERY SWITCH(OPTIONAL)Fig 75 — ELECTRIC BILGE PUMP(12V)(OP)Fig 77 — INSTRUMENT PANEL(A,OPTIONAL)Fig 78 — INSTRUMENT PANEL(A,SAIL,OPTIONAL)Fig 79 — INSTRUMENT PANEL(B-TYPE)(OPTIONAL)Fig 80 — INSTRUMENT PANEL(B,NEW,OPTIONAL)Fig 84 — PANEL(B-TYPE)(OPTIONAL)Fig 85 — PANEL(B-TYPE,NEW,OPTIONAL)Fig 86 — INSTRUMENT PANEL(B-TYPE/VDO)Fig 86 — PANEL(A-TYPE)(OPTIONAL)

Fuel injection pump & governor

Fig 40 — FUEL INJECTION PUMP Fig 41 — FUEL FEED PUMP Fig 47 — GOVERNOR EQUIPMENT Fig 52 — GOVERNOR DRIVING

Fuel injectors & nozzles

Fig 42 — FUEL INJECTION VALVE

Fuel lines, tank & filter

Fig 43 — FUEL STRAINER Fig 44 — FUEL INJECTION PIPE Fig 45 — FUEL PIPE Fig 46 — FUEL RETURN PIPE Fig 47 — FUEL INJECTION LINE Fig 49 — FUEL LINE Fig 50 — FUEL CONTROL DEVICE Fig 50 — FUEL LINE(3GM30F/FVE)Fig 51 — FUEL RETURN LINE Fig 69 — FUEL TANK(OPTIONAL)

Gaskets, kits & spare parts

Fig 84 — GASKET SET(OPTIONAL)

Generator (genset)

Fig 55 — GENERATOR Fig 57 — GENERATOR(OPTIONAL)Fig 71 — GENERATOR COMPONENT PART

Intake and Exhaust

Fig 17 — SUCTION MANIFOLD Fig 18 — EXHAUST MANIFOLD Fig 19 — MIXING ELBOW Fig 19 — AIR INTAKE SILENCER Fig 63 — MIXING ELBOW(OPTIONAL)Fig 82 — REPAIR PART(OPTIONAL)

Lubricating

Fig 5 — LUB. OIL SUMP Fig 8 — BREATHER Fig 25 — LUB. OIL PUMP Fig 26 — LUB. OIL DIPSTICK Fig 27 — LUB. OIL STRAINER Fig 29 — LUB. OIL PIPE Fig 31 — LUB. OIL LINE Fig 65 — LUB.OIL WASTE PUMP(OPTIONAL)Fig 108 — LUB. OIL COOLER

Mounting

Fig 10 — ENGINE LIFTER Fig 12 — ENGINE BRACKET Fig 13 — ENGINE BRACKET(SHOCK ABSORBER)Fig 14 — FLEXIBLE MOUNT

Other / general

Fig 7 — MAIN METAL HOUSING Fig 34 — SUB TANK Fig 73 — SOLID CUPLING(OPTIONAL)

Pistons, rods & liners

Fig 8 — MAIN BEARING HOUSING Fig 23 — PIST0N Fig 24 — CONNECTING ROD

Tools & labels

Fig 9 — LABEL Fig 62 — TOOL Fig 81 — SPECIAL TOOL(OPTIONAL)Fig 85 — SAFETY LABEL(OPTIONAL)Fig 96 — TOOL(OPTIONAL)Fig 111 — SAFETY LABEL

Transmission & drive

Fig 59 — CLUTCH Fig 60 — DUMPER DISK Fig 61 — CLUTCH REMOTE CONTROL Fig 66 — TAPER COUPLING Fig 72 — TAPER COUPLING(OPTIONAL)Fig 74 — STRAIGHT COUPLING(OPTIONAL)Fig 75 — SLIT COUPLING(OPTIONAL)Fig 80 — COUPLING(OPTIONAL)Fig 87 — EXTENSION WIRE(OPTIONAL)Fig 92 — CLUTCH HOUSING Fig 93 — INPUT SHAFT & SUPPORT SHAFT Fig 94 — OUTPUT SHAFT Fig 103 — V-DRIVE HOUSING Fig 104 — INPUT SHAFT Fig 105 — SUPPORT SHAFT Fig 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
Dry weight (engine): 137 kg
Gearbox: 9.8 kg
With standard gearbox: 146.8 kg

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3GM30B 3GM30C 3GM30F 3GM30FVE 3GM30VE