All 71 pages of this Yanmar 4TNE88 Parts Catalog (OEM #000Y00R5200) cover one diesel engine family across every variant: SA01 through SA04, G1A01, ESA01 through ESA05, and EG1A01 through EG1A03. Inside, exploded views and factory part numbers span every major assembly — cylinder block, gear housing, flywheel, cylinder head, fuel injection pump, governor, starting motor, and generator. A model-variant chart up front tells you exactly which part numbers apply to your specific build before you dig into the diagrams. Oil pressure switch 114250-39450 (0.5 KG activation) and main bearing set 129150-02870 (undersize 0.25) show the catalog's depth: right component, right variant, right number. Stop cross-referencing forum posts for OEM numbers. Bookmarked by system and searchable by keyword, this PDF gets you from download to a confirmed part number in under a minute.
What's Inside This Yanmar 4TNE88-SA / G1A / ESA / EG1A Series Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 5-6 | Block Assy, Cylinder, Plug, Bolt, Metal Cap, Main Bearing Set, Gasket, CYL.HEAD |
| Gear Housing | 7-8 | Housing Assy, Gear, Seal, Oil, Gasket, Liquid, O-Ring, F.I.PUMP |
| Flywheel Housing & Oil Sump | 9-10 | Housing, Flywheel, Sump Assy, Lub Oil, Drain Plug M22, Spacer, Oil Sump, Case Assy |
| Cylinder Head & Bonnet | 11-14 | Head Assembly, Intake Valve, Exhaust Valve, Rocker Arm, Bonnet Assembly |
| Suction Manifold & Air Cleaner | 15-16 | Suction Manifold, Air Intake Heater, Intake Pipe, Air Cleaner Assembly |
| Exhaust Manifold & Silencer | 17-18 | Exhaust Manifold, Gasket, Silencer, Tailpipe Assembly, Rain Cap, Stay |
| Camshaft & Driving Gear | 19-20 | Camshaft Assembly, Idle Gear, Gear with Bushing, Fuel Injection Pump Drive |
| Crankshaft & Piston | 21-22 | Crankshaft Assembly, V-Pulley, Piston with Rings, Ring Set, Connecting Rod |
| Lub.Oil System | 23-24 | Pump, Dipstick, Filter, Oil Pressure Switch, Pipe, Bracket |
| Cooling Water System | 25-26 | Water Pump, Thermostat, Fan, V-Belt, V-Pulley, Switch |
| Radiator | 27-31 | Cap, Fan, Sub-Tank, Bracket, Pipe |
| Fuel Injection Pump | 32-35 | Plunger, Barrel, Tappet, Control Rack, Delivery Valve |
| Governor | 36-39 | Lever, Weight Assembly, Control Shaft, Spring, Shim Set, Solenoid |
| Fuel Injection Valve | 40-41 | Injection Valve, Nozzle, Holder, Spring, Shim Pack, Fuel Pipe |
| Fuel Filter | 42-43 | Fuel Strainer, Filter Element, O-Ring, Fuel Pipe, Clamp, Valve |
| Engine Control Device | 44-45 | Control Handle, Regulator, Gear, Lever, Spring, Link |
| Starting Motor | 46-49 | - |
| Starting Motor (Cold District) | 50-51 | - |
| Generator | 52-55 | - |
| Output Shaft | 56-57 | - |
| Panel | 58-59 | - |
| Gasket Set & Tool (Optional) | 60-71 | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Oil pressure switch activation pressure | 0.5KG | p. 24 |
| Main metal (bearing) undersize | 0.25 | p. 22 |
| Metal thrust (bearing) size | 0.25 | p. 22 |
Yanmar 4TNE88-SA / G1A / ESA / EG1A Series Common Problems This Manual Covers
Yanmar 4TNE88 oil pressure switch part number, need to match 0.5 KG activation spec p. 24
Check the Lub.Oil System parts list on page 24. The oil pressure switch for all 4TNE88 variants is listed as part #114250-39450, rated at 0.5 KG activation pressure. Confirm quantity is 1 per engine and verify the 'N' designation column applies to your serial number range before ordering.
Manual Section: Lub.Oil SystemInjection pump plunger, barrel, and delivery valve components hard to tell apart in the exploded view p. 32
Open the Fuel Injection Pump section starting on page 32. Each sub-component, including the plunger, barrel, tappet, control rack, and delivery valve, is broken out as a separate line item with its own part number. Cross-reference each item number against your model's quantity column before purchasing individual components.
Manual Section: Fuel Injection PumpCan't identify the correct main bearing set part number after crankshaft shows scoring or seizure p. 22
Locate the Crankshaft & Piston parts list on page 22. The undersize main bearing set is listed as part #129150-02870 at US=0.25 mm. The quantity shown is 5 sets per engine, consistent across all four variants. Verify your model column before ordering to confirm fitment.
Manual Section: Crankshaft & PistonUnsure which parts list column applies to my specific engine variant when ordering
Start with the Model Compatibility Chart before ordering any part. The four variants (SA01~04, G1A01, ESA01~05, EG1A01~03) share many assemblies but differ on specific components. Each parts list shows per-variant quantity columns; a zero or blank in your column means that part does not apply to your engine.
Manual Section: Model Compatibility ChartNeed complete gasket set part numbers for cylinder head removal and full engine overhaul p. 60
Check the Cylinder Head & Bonnet exploded view on page 11 for individual head gaskets and valve seals listed by part number. For a complete overhaul kit covering all engine sealing surfaces, turn to the Gasket Set & Tool section starting on page 60, where gaskets are grouped by system for easier ordering.
Manual Section: Gasket Set & Tool (Optional)Fuel injection valve nozzle and shim pack part numbers needed for injector replacement p. 40
Find the Fuel Injection Valve exploded view on page 40. The nozzle, holder, spring, and shim pack are listed as individual line items, each with its own part number. Shim thickness controls injection opening pressure, so order the specific shim pack listed for your model column rather than a generic substitute.
Manual Section: Fuel Injection ValveFrequently Asked Questions
What are the replacement specifications for oil pressure switch?
The oil pressure switch for the YANMAR 4TNE88 engine is available under part number 124160-39450 (SWITCH, OIL PRESSURE) or 114250-39450 (SWITCH, (0.5KG)L.0.). Each is supplied in a quantity of one. The manual provides part numbers and quantities, but no further replacement specifications such as torque or installation procedures.
What are the replacement specifications for injection pump plunger / delivery valve components?
Replacement components for the injection pump plunger and delivery valve include PLUNGER W/BARREL (part no. 129470-51101 or 129506-51100), SPRING, PLUNGER (part no. 124950-51190), VALVE W/SEAT, DELIV. (part no. 129505-51300 or 129100-51300), SPRING, DELIV. VALVE (part no. 129155-51320 or 129573-51330), GUARD, DELIVERY VALVE (part no. 129155-51340 or 129573-51340), and GASKET, DELIVERY (part no. 124550-51350). These are typically supplied in quantities of four. The manual lists part numbers and quantities, but no further replacement specifications.
How do you fix yanmar 4TNE88 oil pressure switch part number, need to match 0.5 KG activation spec?
Check the Lub.Oil System parts list on page 24. The oil pressure switch for all 4TNE88 variants is listed as part #114250-39450, rated at 0.5 KG activation pressure. Confirm quantity is 1 per engine and verify the 'N' designation column applies to your serial number range before ordering.
How do you fix injection pump plunger, barrel, and delivery valve components hard to tell apart in the exploded view?
Open the Fuel Injection Pump section starting on page 32. Each sub-component, including the plunger, barrel, tappet, control rack, and delivery valve, is broken out as a separate line item with its own part number. Cross-reference each item number against your model's quantity column before purchasing individual components.
What do I get after purchasing this Yanmar 4TNE88-SA01~04, 4TNE88-G1A01?
Instant PDF download. You get the full 71-page searchable Parts Catalog immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I able to print pages from this Yanmar 4TNE88-SA01~04, 4TNE88-G1A01?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Document Quality
This is a scanned document with an OCR layer, allowing you to search and copy the full text. The OCR text is generally crisp and readable, though some original scanned headings and cover text may appear slightly blurry or faded. Diagrams and illustrations are raster images; while labels are mostly readable, they are not vector-sharp. Pages are largely clean, but some exhibit minor scan artifacts, slight skewing, and occasional faint background discoloration, particularly on page 29 which is a fax with heavy artifacts. There are no notable blank pages.
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