Need the factory part numbers for your Yanmar 4TNE94-SA or 4TNE94-G1A? This 21-page parts catalog (OEM #Y00R4570) is your direct source for every component across both engine variants. Inside, you get exploded views with individual OEM part numbers covering the full engine: Cylinder Block, Gear Housing, Flywheel Housing and Oil Sump, Cylinder Head and Bonnet, Suction and Exhaust Manifolds, Camshaft and Driving Gear, Crankshaft and Piston, Lub. Oil System, Cooling Water System, Fuel Injection Pump, Fuel Injection Valve, Fuel Line, Engine Stop Device, Starting Motor, Generator, Gasket Set, Governor, and Feed Pump. Each assembly diagram shows part positioning and cross-references so you order the correct piece on the first call. The cooling system thermo switch carries a factory rating of 110°C, the kind of detail that confirms you are looking at the right part. Stop ordering blind. Bookmarked and searchable; jump to any assembly by keyword.
What's Inside This Yanmar 4TNE94-SA / G1A Parts Manual
| System | Pages |
|---|---|
| Cylinder Block | 1-1 |
| Gear Housing | 2-2 |
| Flywheel Housing & Oil Sump | 3-3 |
| Cylinder Head & Bonnet | 4-4 |
| Suction Manifold | 5-5 |
| Exhaust Manifold | 6-6 |
| Camshaft & Driving Gear | 7-7 |
| Crankshaft & Piston | 8-8 |
| Lub.Oil System | 9-9 |
| Cooling Water System | 10-10 |
| Fuel Injection Pump | 11-12 |
| Fuel Injection Valve | 13-13 |
| Fuel Line | 14-14 |
| Engine Stop Device | 15-15 |
| Starting Motor | 16-16 |
| Generator | 17-17 |
| Gasket Set | 18-18 |
| Governor | 19-20 |
| Feed Pump | 21-21 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Thermo switch operating temperature | 110 C | p. 10 |
Yanmar 4TNE94-SA / G1A Common Problems This Manual Covers
Yanmar 4TNE94-SA cylinder head gasket part number unclear, need correct part for current serial range p. 1
Open the engine parts diagram on page 1 and locate the cylinder head assembly section. Identify the gasket in the exploded view, record the part number shown, and cross-reference with your machine's serial number to confirm compatibility. The 4TNE94-SA and 4TNE94-G1A may share some components, but verify each part number individually before ordering.
Manual Section: Engine Parts DiagramFuel filter and injector part numbers needed, multiple catalog entries, unsure which matches this engine p. 11
Turn to the fuel parts section on page 11. The exploded view shows the fuel filter assembly and injector positions with individual part numbers. Match each item to the illustration callout numbers in the list. If ordering multiple fuel system components, cross-check each part number against the index to avoid mixing parts from incompatible serial number ranges.
Manual Section: Fuel PartsStarter motor part number uncertain, multiple listings for this engine appear in parts database p. 16
Check the electrical parts section on page 16. Locate the starter motor in the exploded view, note the callout number, then match it to the parts list for the correct number. Verify serial number applicability notes next to each listing before ordering, as starter variants can differ between production runs.
Manual Section: Electrical PartsThermo switch and thermostat parts hard to identify, cooling system rebuild parts list unclear p. 10
Reference the cooling system components on page 10 for thermo switch identification. Any replacement thermo switch must be rated for 110°C operating temperature, so confirm that specification matches the listed part before ordering. Locate the thermo switch callout in the exploded view, record the part number, and verify serial number applicability for your engine variant.
Manual Section: 010.PdfWater pump rebuild parts scattered across catalog, no single kit listing found p. 1
Start at the engine parts diagram on page 1 to identify water pump assembly components. Locate each sub-component in the exploded view, including the impeller, seal, and housing, and record individual part numbers from the callout list. Order by individual callout numbers rather than searching for a single kit, as components are typically listed separately for this engine family.
Manual Section: Engine Parts DiagramFrequently Asked Questions
What are the replacement specifications for cylinder head gasket?
The replacement specification for the cylinder head gasket is part number 129900-01331. This gasket is listed as item 29 in the CYLINDER BLOCK section and item 2 in the GASKET SET section. Further replacement specifications such as torque values or detailed procedures are not provided in these manual pages.
What are the replacement specifications for fuel injection components?
Replacement specifications for fuel injection components include part numbers such as 129915-51010 for the Fuel Injection Pump (item 1), 729902-53100 for the Fuel Valve (item 4A), and 129902-53000 for the Nozzle (item 5A). Detailed replacement procedures or torque specifications for these components are not available in the provided manual sections.
How do you fix yanmar 4TNE94-SA cylinder head gasket part number unclear, need correct part for current serial range?
Open the engine parts diagram on page 1 and locate the cylinder head assembly section. Identify the gasket in the exploded view, record the part number shown, and cross-reference with your machine's serial number to confirm compatibility. The 4TNE94-SA and 4TNE94-G1A may share some components, but verify each part number individually before ordering.
How do you fix fuel filter and injector part numbers needed, multiple catalog entries, unsure which matches this engine?
Turn to the fuel parts section on page 11. The exploded view shows the fuel filter assembly and injector positions with individual part numbers. Match each item to the illustration callout numbers in the list. If ordering multiple fuel system components, cross-check each part number against the index to avoid mixing parts from incompatible serial number ranges.
What do I get after purchasing this Yanmar 4TNE94-SA, 4TNE94-G1A manual?
Instant PDF download. You get the full 21-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 manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Document Quality
This document is a scanned PDF, but you can search and copy the full text thanks to its OCR layer. The text quality is generally crisp and easy to read throughout the document. Diagrams and illustrations are raster images, so they show some pixelation when zoomed in, though most labels remain readable. Some smaller numbers within the diagrams are faint. The pages are clean with no significant scan artifacts or stains, but some diagrams appear slightly skewed.
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