All 42 pages of this Yanmar 3TNV88-BPTB2, TB235, and 3TNV88-BPTB1 Parts Catalog are built around one job: identifying every component in this engine before you order a single bolt. Inside, exploded assembly figures walk you through every engine system, from the cylinder block and gear housing to the fuel injection pump, governor, and gasket set. Each figure pairs part numbers with reference codes, interchangeability marks, and effective machine numbers so you're looking at the exact hardware for your TB235, not a cross-your-fingers guess. When you need to confirm a part match, the catalog gives you the reference data: the air cleaner element is 5 inches, and the injection pump's Woodruff key seats at 4x16 mm. No more ordering the wrong part and eating a week of downtime. Bookmarked and keyword-searchable; jump straight to the crankshaft assembly or starter pinion and pull your part numbers in seconds.
What's Inside This Yanmar 3TNV88-BPTB2, TB235, 3TNV88-BPTB1 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 6-7 | Cylinder Block Assy, Camshaft Bush, Thrust Metal, Gasket, Main Bearing Set Under-Sized Part, Main Metal Over-Sized Part, Thrust. Repair Part Metal |
| Gear Housing | 8-9 | Gear Case Assy, Oil Seal, Gear Case Flange, Filler Cover, Hydraulic Oil Pump Cover, Knock Pipe, Blind Cover |
| Flywheel Housing & Oil Sump | 10-11 | Flywheel Housing, Flywheel Cover Cap, Oil Sump Spacer, Lub. Oil Sump Assy, Oil Seal Case Assy, Oil Seal |
| Cylinder Head & Bonnet | 12-13 | Engine Lifter, Rocker Shaft Assy, Rocker Arm Shaft, Rocker Arm Support, Spring, Rocker Arm Assy, Valve Cap, Cylinder Head Assy |
| Suction Manifold & Air Cleaner | 14-15 | Breather Pipe, Int Manifold Assy, Breather Joint, Gasket, Bend, Air Cleaner Assy, Element 5INCH, Unloader Valve |
| Exhaust Manifold & Silencer | 16-17 | Exhaust Manifold, Exhaust Manifold Gasket, Silencer Gasket, Silencer ) |
| Camshaft & Driving Gear | 18-19 | Tappet, Push Rod, Camshaft Assy, Thrust Metal, Camshaft Gear, Idle Gear Shaft, Idle Gear Assy, Idle Gear Repair Part Bush |
| Crankshaft & Piston | 20-21 | Crankshaft Assy, Crankshaft Gear, Crankshaft V-Pulley, Flywheel Assy, Ring Gear, Piston Assy, Piston Ring Set, Connecting Rod Assy |
| LUB.OIL System | 22-23 | Lub. Oil Pump Assy, Lub. Oil Pump Gasket, Joint PT1, Lub. Oil Dipstick, Dipstick Guide, Gasket, Oil Inlet Pipe Assy, Filter Bracket Assy |
| Cooling Water System | 24-25 | Water Pump Assy, Gasket, Plate, Joint, Thermo. Case Gasket, V-Pulley, V-Belt, Cooling Fan |
| Fuel Injection Pump | 26-27 | Injection Pump Assy Governor Assy Isincorporated in This, Stopper, Dilevery Valve Assy, Spring, Delivery Holder, Lifter, Timer Set, Timer Cmp |
| Governor | 28-29 | Case Packing, Packing, Spring, Regulator Lever, Shaft Retainer, Case Cover, Stop Solenoid |
| Fuel Injection Valve | 30-31 | Fuel Injector, Nozzle Assy, Nozzle Holder Assy, Nozzle Spring, Nozzle Spring Seat, Stop Plate, Injection Pipe Retainer, Injection Pipe Assy |
| Fuel Line | 32-33 | Fuel Filter Bracket, Spacer Filter Bra, Fuel Oil Filter, Fuel Oil Pipe Assy, Fuel Pump, Separator Assy, Element, Retaining Ring |
| Starting Motor | 34-35 | Starter, Magnetic Switch Assy, Armature Assy, Yoke Assy, Brush Holder Assy, Brush, Brush Spring, Rear Cover Assy |
| Generator | 36-37 | Alternator, Rotor Assy, Bearing Cover, Drive Flame Assy, Plate, Rear Flame Assy, Pulley, Holder |
| Gasket Set | 38-39 | Gasket Set Optional Part, Gasket, Valve Stem Seal, Nozzle Protector, Nozzle Seat, Bonnet Gasket, Exhaust Manifold Gasket, Silencer Gasket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Air cleaner element size | 5 inch | p. 15 |
| Thermo switch activation temperature | 110 C | p. 25 |
| Woodruff key dimensions | 4x16 mm | p. 27 |
Yanmar 3TNV88-BPTB2, TB235, 3TNV88-BPTB1 Common Problems This Manual Covers
Yanmar 3TNV88 fuel injector nozzle part number, need exact replacement for clogged nozzle causing white smoke p. 30
Turn to the Fuel Injection Valve exploded view on page 30. Locate the Nozzle Assy and Holder Assy in the parts list on page 31. Cross-reference the Ref. No. and Interchangeability Mark against your engine serial number to confirm the correct nozzle assembly for your specific build. The Injection Pipe Assy and Return Pipe Assy are listed on page 31; pull those part numbers at the same time so the complete nozzle circuit ships in one order.
Manual Section: Fuel Injection ValveNeed correct fuel filter and fuel pump part numbers before engine teardown for contamination repair p. 32
Open the Fuel Line section on page 32. The Fuel Filter, Fuel Oil Pipe assemblies, Fuel Pump, and Separator Assy are all listed there with individual part numbers. Check the Change Mark column carefully, a change mark on the filter bracket or separator indicates a superseded part, and ordering the old number will get you the wrong fitment.
Manual Section: Fuel LineOrdering piston ring set and can't confirm part number applies to correct serial number range p. 20
Go to the Crankshaft & Piston section starting on page 20. The Ring Set is listed alongside the Piston Assy. Pay close attention to the Effective Machine No. column, this manual covers three engine variants (3TNV88-BPTB2, TB235, 3TNV88-BPTB1), and ring sets may differ between them. Match your engine serial number against the Effective Machine No. range before placing the order.
Manual Section: Crankshaft & PistonValve seat part numbers needed, can't identify intake vs exhaust from the head diagram p. 12
Reference the Cylinder Head & Bonnet section on page 12. The parts list on page 13 distinguishes Valve Intake and Valve Exhaust entries by Ref. No. Confirm the Level column to identify sub-component relationships, valve seats are typically nested under the head assembly in the hierarchy. Note the Repair Part mark if present, which indicates the part is available as a standalone service item rather than assembly-only.
Manual Section: Cylinder Head & BonnetOil pump assembly part number for lub oil system rebuild after low pressure failure p. 22
Find the LUB.OIL System on page 22. The Pump Assy, Lub. Oil is the top-level assembly item. Page 23 lists the sub-components including the filter bracket assembly and oil inlet pipe. If you also need the oil pressure valve, verify it appears as a separate Ref. No. in the list, order it alongside the pump assy to avoid a second parts run.
Manual Section: LUB.OIL SystemGasket set part number for full top-end rebuild, need to confirm all o-rings and seals are included p. 38
Check the Gasket Set section on page 38. The listing covers O-Ring, Seal Washer, Nozzle Protector, Bonnet Gasket, and associated hardware in one place. Verify the Interchangeability Mark on each line, items without a mark are unique to this assembly and must be ordered individually if the gasket set does not cover them. The nozzle protector and filter wrench are listed here as well, so confirm whether you need those separately.
Manual Section: Gasket SetFrequently Asked Questions
What are the replacement specifications for Fuel injection nozzle?
For the Fuel Injection Nozzle, the manual specifies the "FUEL INJECTOR (SDK)" with part number 729604-53100, required in a quantity of 3. Additionally, the "NOZZLE ASSY" is listed with part number 129604-53000, also required in a quantity of 3.
What are the replacement specifications for Injector?
For the Injector, the manual specifies the "FUEL INJECTOR (SDK)" with part number 729604-53100, required in a quantity of 3. This is the main component for the fuel injection system.
How do you fix yanmar 3TNV88 fuel injector nozzle part number, need exact replacement for clogged nozzle causing white smoke?
Turn to the Fuel Injection Valve exploded view on page 30. Locate the Nozzle Assy and Holder Assy in the parts list on page 31. Cross-reference the Ref. No. and Interchangeability Mark against your engine serial number to confirm the correct nozzle assembly for your specific build. Also pull the return pipe assembly part number from the same section to complete your order.
How do you fix need correct fuel filter and fuel pump part numbers before engine teardown for contamination repair?
Open the Fuel Line section on page 32. The Fuel Filter, Fuel Oil Pipe assemblies, Fuel Pump, and Separator Assy are all listed there with individual part numbers. Check the Change Mark column carefully, a change mark on the filter bracket or separator indicates a superseded part, and ordering the old number will get you the wrong fitment.
How will I receive this Yanmar 3TNV88-BPTB2, TB235, 3TNV88-BPTB1 Parts Catalog?
You get a 42-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print 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 with an OCR layer, allowing you to search and copy the full text. The text quality is consistently crisp and easy to read throughout all pages. Diagrams and illustrations are clear raster images, and all labels and part numbers are readable, though they are not vector graphics. Pages are clean with no significant scan artifacts or marks. There is one blank "Memo" page included.
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