Two engine configurations, one 42-page parts catalog: this 1996 factory reference covers the 3TNV82A-BPTBZ and TB128FR with exploded views and OEM part numbers.
What's Inside This Yanmar 3TNV82A-BPTBZ (TB128FR) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 7-8 | Block Assy, Plug, Bolt, Bush, Bearing, Thrust |
| Gear Housing | 9-10 | Gear Case Assy, Seal Oil, Flange, Stud, O-Ring, Bolt |
| Flywheel Housing & Oil Sump | 11 | Parallel Pin, Housing Flywheel, Cap Flywheel Cover, Sump Assy Oil, Drain Plug, Seal Washer |
| Cylinder Head & Bonnet | 12-14 | Lifter, Rocker Arm, Valve, Cylinder Head Assy, Bonnet Assy, Gasket |
| Suction Manifold & Air Cleaner | 15-16 | Pipe Breather, Manifold Intake, Gasket, Air Cleaner Assy, Element Outer, Elbow Air Intake |
| Exhaust Manifold & Silencer | 17 | Gasket, Manifold Exhaust, Pipe Exhaust, Bolt, Nut, Silencer |
| Camshaft & Driving Gear | 18-19 | Tappet, Push Rod, Camshft Assy, Gear Camshaft, Idle Gear, Pump Gear |
| Crankshaft & Piston | 20-21 | Crankshaft Assy, Gear Crankshaft, V-Pulley, Piston Assy, Connecting Rod, Bearing Crankpin |
| Lub.Oil System | 22-23 | - |
| Cooling Water System | 24-26 | - |
| Fuel Injection Pump | 27 | - |
| Governor | 28-29 | - |
| Fuel Injection Valve | 30-31 | - |
| Fuel Filter | 32-33 | - |
| Starting Motor | 34-35 | - |
| Generator | 36-37 | - |
| Gasket Set | 38-39 | Gasket, Head, O-Ring P16, Seal, Valve Stem (Exh), Bonnet |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Bearing Under-sized | 0.25 | p. 7 |
| Cylinder Head Bolt Size | M8X50 | p. 13 |
| Parallel Pin Size | 8X16 mm | p. 11 |
| O-Ring Size | P-32.0 | p. 9 |
| Lock Nut Size | M14 | p. 19 |
Yanmar 3TNV82A-BPTBZ (TB128FR) Common Problems This Manual Covers
Yanmar 3TNV82A-BPTBZ head gasket part number unclear when ordering replacement after overheating failure p. 38
Open the Gasket Set exploded view on page 38. The complete gasket set listing includes the head gasket, bonnet gasket, O-Ring P16, exhaust valve stem seal, and related seals, order the full set to avoid a second teardown. Cross-reference part numbers against your specific serial number range using the index before placing the order.
Manual Section: Gasket SetCan't identify correct piston ring and connecting rod bearing part numbers for bottom-end rebuild p. 20
Pull the Crankshaft & Piston section on page 20. The exploded view lists Piston Assy, Connecting Rod, and Bearing Crankpin as separate line items with individual part numbers. For main bearing undersized variants, page 7 lists the 0.25 mm undersize option, confirm which you need before ordering by measuring your journals first.
Manual Section: Crankshaft & PistonFuel injection pump part numbers hard to match across the multiple 3TNV82A-BPTBZ engines in this catalog p. 27
Go directly to page 27 for the Fuel Injection Pump parts list. Because this manual covers 3TNV82A-BPTBZ and TB128FR, check the index to confirm which part numbers apply to your specific model suffix () before ordering, part numbers may differ between sub-models.
Manual Section: Fuel Injection PumpUnsure which fuel filter assembly and element part numbers to order for a scheduled service replacement p. 32
Locate the Fuel Filter section on page 32. The two-page exploded view covers the full filter assembly and element part numbers. Use the index to verify compatibility with your engine variant before purchasing, filter housing and element numbers can vary between the 3TNV82A-BPTBZ engine family covered in this catalog.
Manual Section: Fuel FilterStarting motor part numbers needed but unsure which electrical sub-components are listed separately p. 34
Check the Starting Motor section on page 34. Individual electrical sub-components are listed as separate parts, not just as an assembly, so you can order brushes, solenoid, or the full motor depending on what failed. Cross-check with the index to confirm your model's specific starter part number.
Manual Section: Starting MotorCylinder head bolt spec and valve train part numbers unclear when sourcing parts for a head reseal p. 12
Reference the Cylinder Head & Bonnet section starting on page 12. Cylinder head bolts are M8X50 (page 13) for all models in this catalog. The same section lists Lifter, Rocker Arm, Valve, and Gasket part numbers individually, order the full bonnet gasket from the Gasket Set on page 38 at the same time to avoid a repeat job.
Manual Section: Cylinder Head & BonnetFrequently Asked Questions
What are the replacement specifications for head gasket?
The replacement specification for the head gasket is part number Y119812-01330, with a quantity of 1. This part is listed in the Cylinder Head & Bonnet section as well as the Gasket Set section.
What are the replacement specifications for gasket set?
The replacement specification for the gasket set is part number Y719802-92660, with a quantity of 1. This is identified as a GASKET SET (NON-ASB.) in the manual.
How do you fix 3TNV82A-BPTBZ head gasket part number unclear when ordering replacement after overheating failure?
Open the Gasket Set exploded view on page 38. The complete gasket set listing includes the head gasket, bonnet gasket, O-Ring P16, exhaust valve stem seal, and related seals. Order the full set to avoid a second teardown. Cross-reference part numbers against your specific serial number range using the index before placing the order.
How do you fix can't identify correct piston ring and connecting rod bearing part numbers for bottom-end rebuild?
Pull the Crankshaft & Piston section on page 20. The exploded view lists Piston Assy, Connecting Rod, and Bearing Crankpin as separate line items with individual part numbers. For main bearing undersized variants, page 7 lists the 0.25 mm undersize option. Confirm which you need before ordering by measuring your journals first.
How will I receive this 3TNV82A-BPTBZ & variants Parts Catalog?
This is a 42-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.
Are there any print restrictions on this 3TNV82A-BPTBZ & variants manual?
There are no print restrictions — 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 primarily a scanned parts catalog, though some elements like page numbers are digital. You can search and copy text throughout the document due to an OCR layer. The text quality is generally crisp and readable, but smaller text and table headers in scanned sections may appear slightly fuzzy. All diagrams are raster images, meaning they will pixelate when zoomed, but their labels remain readable. Pages are clean with no significant marks, though a slight, consistent skew is present on most scanned pages, and a few blank filler pages are included.
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