Tracking down exact replacement components for your engine is simple with this 35-page Yanmar 3TNC80L-RB, Y00B4461 parts catalog PDF. Inside, you get complete exploded views breaking down the entire cylinder block, gear housing, and fuel injection pump assembly. Every section provides detailed component lists showing exact factory part numbers and hardware cross-references for the cooling water system, governor, and starting motor. Always verify your hardware orders using factory dimensions, like the M22 drain plug thread size and the 8x16 mm parallel pins required for the flywheel housing. Ordering the wrong component kills your shop's uptime and wastes valuable hours. Download this bookmarked file directly to your phone or tablet, find the exact part number instantly, and get your equipment running again.
What's Inside This Yanmar 3TNC80L-RB, Y00B4461 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine | 1 | Small Vertical (B), Tnc |
| Cylinder Block | 2-3 | Block Assy, Cylinder |
| Gear Housing | 4-5 | Housing Assy, Gear |
| Flywheel Housing & L.O Sump | 6-7 | Housing, Flywheel, Sump Assy, Oil |
| Cylinder Head & Bonnet | 8-9 | Head Assy, Bonnet Assy, Heading No. 20 Includes Heading No. 21 to 31, Cylinder, Previous Model |
| Suc/Exh Manifold | 10-11 | Manifold, Suction, Exhaust, Heater, Air |
| Camshaft & Driving Gear | 12-13 | Camshaft Assy, Shaft, Idle Gear, Repair Part |
| Crankshaft & Piston | 14-15 | Crankshaft Assy, Piston W/Rings, Rod Assy, Connecting, P/C News No: Y00B4461-1 Published:2000/1, Repair Part |
| Lub. Oil System | 16-17 | Pump Assy, Lub. Oil, Dipstic, Lub Oil, Oil Press, Previous Model, Valve Assy |
| Cooling Water System | 18-19 | C.W., Fan, Cooling, Cover, Thermostat, Cylinder Head, Pump |
| Fuel Injection Pump | 20-22 | Fuel Injection, Plunger W/Barrel, Tappet Assy, Rack, Control, Viewed From a, Pump, Classfied Mark |
| Fuel Injection Pipe | 23-24 | F.Inject, Nozzle Assy, Retainer, Inj. Pipe, Valve Assy |
| Fuel Pipe | 25-26 | Strainer Assy, Fuel, Pipe, Check, Valve Assy |
| Governor | 27-28 | Case, Lever Assy, Fuel Control, Spring, Classfied Mark |
| Starting Motor | 29-30 | Starter, Armature Assy, Clutch Assy, Flywheel Housing |
| Generator | 31-32 | Washer, Collar, Plate Assy, Stator, Coupler, Spring |
| Gasket Set (Optional) & Tool | 33-35 | Gasket, Liquid, Optional |
Every system also includes an exploded view and a parts list.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Parallel Pin Size | 8x16 mm | p. 6 |
| Plug/Drain Plug Thread Size | M22 | p. 6 |
| Pipe Plug Thread Size | PT1/4 | p. 8 |
| Nut Thread Size & Pitch | M8xP1.0 | p. 8 |
Yanmar 3TNC80L-RB, Y00B4461 Common Problems This Manual Covers
Need Yanmar 3TNC80L-RB main bearing part numbers after engine knock and rapid bearing wear p. 2
Inspect the exploded view on page 2 to identify replacement bearings. Locate the correct part number for the 0.25 mm undersize main bearing option. Match the numbers against your serial plate to order the correct components for your block rebuild.
Manual Section: Cylinder BlockCan't identify the correct drain plug part number for the oil pan after finding a leak p. 6
Review the parts list on page 6 to find the exact M22 thread size drain plug for the sump assembly. Check the surrounding diagram for the matching sealing washer part number to ensure a perfectly tight seal when installing the new plug.
Manual Section: Flywheel Housing & L.O SumpTrying to find cylinder head pipe plug part numbers during a complete top end rebuild p. 8
Examine the cylinder head diagram on page 8 to locate the correct replacement plugs. Find the exact part number for the PT1/4 thread size pipe plug. Cross-reference the required quantities in the index before ordering replacements for your engine.
Manual Section: Cylinder Head & BonnetNeed replacement sealing components for the front gear housing to fix a severe oil leak p. 4
Check the gear housing parts breakdown on page 4. Identify the correct part numbers for the 16.0 mm and 32.0 mm diameter O-rings required for the assembly. Ensure you order the exact quantities listed in the right-hand column to prevent future leaks.
Manual Section: Gear HousingFrequently Asked Questions
How do you fix need Yanmar 3TNC80L-RB main bearing part numbers after engine knock and rapid bearing wear?
Inspect the exploded view on page 2 to identify replacement bearings. Locate the correct part number for the 0.25 mm undersize main bearing option. Match the numbers against your serial plate to order the correct components for your block rebuild.
How do you fix can't identify the correct drain plug part number for the oil pan after finding a leak?
Review the parts list on page 6 to find the exact M22 thread size drain plug for the sump assembly. Check the surrounding diagram for the matching sealing washer part number to ensure a perfectly tight seal when installing the new plug.
How do you fix trying to find cylinder head pipe plug part numbers during a complete top end rebuild?
Examine the cylinder head diagram on page 8 to locate the correct replacement plugs. Find the exact part number for the PT1/4 thread size pipe plug. Cross-reference the required quantities in the index before ordering replacements for your engine.
How do you fix need replacement sealing components for the front gear housing to fix a severe oil leak?
Check the gear housing parts breakdown on page 4. Identify the correct part numbers for the 16.0 mm and 32.0 mm diameter O-rings required for the assembly. Ensure you order the exact quantities listed in the right-hand column to prevent future leaks.
How quickly can I access this manual after buying?
Immediate download of the complete 35-page searchable Parts Catalog. Access it on any device, from a laptop at your desk to a phone in the field.
Is this Yanmar 3TNC80L-RB, Y00B4461 Parts Catalog printable?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Document Quality
This document is a mixed PDF, featuring both searchable OCR text pages and scanned image pages. You can search and copy text from the OCR-processed sections, which are crisp and easy to read. Diagrams and illustrations are raster images, so they may pixelate when magnified, but their labels remain readable. The overall page condition is clean, free from scan artifacts, stains, or skewed content, and there are no notable blank pages.
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