All 33 pages of this Yanmar 3TNE84-SA, 3TNE84-G1A, 3TNE84-G2A, and 3TNE84C-G1A Parts Catalog (OEM #Y00R4471) map every component across the complete engine family. You get exploded views and numbered parts lists for every major assembly: cylinder block, gear housing, flywheel housing and oil sump, both cylinder head and bonnet configurations, suction and exhaust manifolds, crankshaft and piston, lubrication and cooling water systems, fuel injection pump, governor, fuel injection valve, fuel filter, and starting motors in both standard and cold-district variants. Cross-referenced part numbers tie each diagram directly to the component, so you can confirm exactly what you need before calling the counter. No more guessing a part number off a worn casting or describing a failed piece over the phone. Bookmarked by assembly, open it on any device, jump straight to the failed system, and place your order the first time.
What's Inside This Yanmar 3TNE84-SA / G1A / G2A / C-G1A Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 1-1 | Cylinder Block Assembly, Part Numbers |
| Gear Housing | 2-2 | Gear Housing Assembly, Timing Gear Train, Part Numbers |
| Flywheel Housing & Oil Sump | 3-3 | Flywheel Housing, Oil Sump, Part Numbers |
| Cylinder Head & Bonnet (1) | 4-4 | Cylinder Head Assembly, Bonnet, Valves, Part Numbers |
| Cylinder Head & Bonnet (2) | 5-5 | Cylinder Head Assembly Variant 2, Part Numbers |
| Suction Manifold & Air Cleaner | 6-6 | Intake Manifold, Air Cleaner Assembly, Part Numbers |
| Exhaust Manifold & Silencer | 7-7 | Exhaust Manifold, Muffler, Part Numbers |
| Camshaft & Drivimg Gear | 8-8 | Camshaft, Drive Gear, Tappets, Part Numbers |
| Crankshaft & Piston | 9-9 | Crankshaft, Piston Assembly, Connecting Rod, Part Numbers |
| Lub.Oil System | 10-11 | Lubrication Oil Pump, Oil Filter, Piping, Part Numbers |
| Cooling Water System | 12-13 | Water Pump, Thermostat, Cooling Passages, Part Numbers |
| Radiator | 14-15 | Radiator Assembly, Hoses, Cooling Fan, Part Numbers |
| Fuel Injection Pump | 16-17 | Injection Pump Assembly, Plunger, Delivery Valve, Part Numbers |
| Governor | 18-19 | Governor Assembly, Control Lever, Springs, Part Numbers |
| Fuel Injection Valve | 20-20 | Injector Nozzle, Nozzle Holder, Spring, Part Numbers |
| Fuel Filter | 21-21 | Fuel Filter Assembly, Sediment Bowl, Part Numbers |
| Engine Control Device | 22-22 | Throttle Control, Stop Lever, Linkage, Part Numbers |
| Starting Motor (Standard) | 23-25 | Starter Motor Standard, Drive Pinion, Brushes, Part Numbers |
| Starting Motor (Cold District) | 26-28 | Cold District Starter Motor, Pre-Heater, Part Numbers |
| Generator | 29-29 | Alternator Assembly, Charging System, Part Numbers |
| Panel | 30-31 | Instrument Panel, Gauges, Switches, Part Numbers |
| Gasket Set | 32-32 | Full Gasket Set, Head Gasket, Seal Kit, Part Numbers |
| Starting Motor (Cold Distict) | 33-33 | Cold District Starter Motor Inner Parts, Brushes, Armature, Part Numbers |
Yanmar 3TNE84-SA / G1A / G2A / C-G1A Common Problems This Manual Covers
Yanmar 3TNE84 fuel injector nozzle and valve assembly part numbers needed after reconditioning, exact nozzle unclear p. 20
Open the fuel injector exploded view on page 20. The nozzle assembly (Nozzle Assy, F.INJECT), valve assembly (Valve Assy, F.INJECT), nozzle case, and nozzle nut are each listed as separate catalog entries. Order each item individually rather than assuming they ship as a set. Verify all part numbers against the parts number list on page 1 before placing the order.
Manual Section: 015.PdfFuel injection pump plunger and barrel assembly part number unclear, unsure which kit matches engine model variant p. 16
Find the fuel injection pump exploded view on page 16. The plunger with barrel (Plunger W/BARREL), tappet assembly, control rack, and gear are all listed as separate parts. Identify the plunger and barrel part number from the callout on this page, then cross-reference against the parts number list on page 1 to confirm compatibility with your specific model variant.
Manual Section: 013.PdfGovernor assembly O-ring and weight part numbers hard to isolate from complex exploded view callouts p. 18
Turn to the governor assembly exploded view on page 18. The weight assembly, control lever assembly, governor shaft, and O-Ring S6 are all called out as individual line items. Pull the O-Ring S6 part number directly from the exploded view before ordering; it is a standalone entry, not bundled in a rebuild kit. Confirm all governor parts against the parts number list on page 1.
Manual Section: 014.PdfFuel strainer element and cup part numbers needed, unsure if O-ring is included or ordered separately p. 21
Check the fuel strainer assembly exploded view on page 21. The strainer assembly, fuel element, strainer cup, O-ring, and supply pipe are each listed as separate catalog entries. Order the element and O-ring as individual line items; the catalog does not bundle them into a kit. Verify all part numbers against the parts list on page 1 before ordering.
Manual Section: 016.PdfLube oil filter and oil cooler part numbers unclear, catalog shows multiple filter references for the engine p. 10
Open the lubrication system exploded view on page 10. The oil pump assembly, oil cooler assembly, dipstick, and Filter 80X80L are listed as separate catalog entries. Use the Filter 80X80L size designation to confirm you are referencing the correct filter part number; the oil cooler and pump are independent assemblies. Cross-reference all part numbers against the parts list on page 1 to verify.
Manual Section: 010.PdfFrequently Asked Questions
What are the replacement specifications for Injector components?
The manual provides a list of components for the fuel injection valve, including their part numbers. Key components include the VALVE ASSY, F.INJECT (part numbers 729503-53100, 719810-53100, 729100-53100), NOZZLE ASSY,F.INJECT (part numbers 129503-53000, 119810-53000, 129100-53000), and the NUT, NOZZLE CASE (part number 114250-53080). Other components like the HOLDER ASSY, NOZZLE (129100-53100), SPRING, NOZZLE (114250-53120), and SHIM PACK (114250-53400) are also listed. Detailed replacement specifications such as torque values or installation procedures are not provided in this parts catalog.
What are the replacement specifications for Fuel injection parts?
The manual lists various fuel injection parts and their corresponding part numbers. For the fuel injection pump, key components include PUMP ASSY, F. INJEC. (729211-51390), FUEL INJECTION PUMP (729218-51310), and PLUNGER W/BARREL (129506-51100). For the fuel injection valve, parts such as VALVE ASSY, F.INJECT (729503-53100), NOZZLE ASSY,F.INJECT (129503-53000), and NUT, NOZZLE CASE (114250-53080) are specified. This manual primarily serves as a parts catalog, and as such, does not provide detailed replacement specifications like torque settings or procedural steps.
How do you fix yanmar 3TNE84 fuel injector nozzle and valve assembly part numbers needed after reconditioning, exact nozzle unclear?
Open the fuel injector exploded view on page 20. The nozzle assembly (Nozzle Assy, F.INJECT), valve assembly (Valve Assy, F.INJECT), nozzle case, and nozzle nut are each listed as separate catalog entries. Order each item individually rather than assuming they ship as a set. Verify all part numbers against the parts number list on page 1 before placing the order.
How do you fix fuel injection pump plunger and barrel assembly part number unclear, unsure which kit matches engine model variant?
Find the fuel injection pump exploded view on page 16. The plunger with barrel (Plunger W/BARREL), tappet assembly, control rack, and gear are all listed as separate parts. Identify the plunger and barrel part number from the callout on this page, then cross-reference against the parts number list on page 1 to confirm compatibility with your specific model variant.
What format is the Yanmar 3TNE84 parts catalog?
This is a 33-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is the Yanmar 3TNE84 parts catalog printable?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Document Quality
This document is a scanned PDF with an OCR layer, so you can search and copy text throughout. The text is clear and readable, although it has the typical appearance of scanned content rather than native digital crispness. All diagrams and illustrations are raster images, which may show slight pixelation when zoomed, but their labels are generally readable. The pages are clean, free of significant scan artifacts, stains, or skewed content, and there are no notable blank pages.
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