Part of the Yanmar Parts Manuals.
Somewhere between pulling the injection pump and boxing up the old crankshaft bearings, every rebuild hits the same wall: which exact part number goes back in. This Yanmar parts catalog settles that for the 4TNE88-ETBC, TB150C, and 4TNV88-QTBC (serial numbers 14510004 and up), with exploded assembly diagrams and numbered parts lists for every group on the engine.
Each spread follows the same layout: an exploded diagram facing a parts list with reference numbers, quantities, and remarks. Cylinder block, gear housing, crankshaft and piston, camshaft, fuel injection pump, governor, injection valves, fuel line, starting motor, generator, and the complete gasket set each get their own pages across the 37-page catalog.
It downloads as a PDF, so it reads on a phone at the stand or prints a spread at a time, and the part number you order the first time is the one that actually fits your serial number.
What's Inside This Yanmar 4TNE88-ETBC / 4TNV88-QTBC (TB150C) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| How to Read This Parts Catalog | 2-3 | Ref. No., Lev., Change Mark, Interchangeability Mark, Effective Machine No., Remarks Mark |
| Cylinder Block | 4-5 | Parts Remarks |
| Gear Housing | 6-7 | Parts Remarks |
| Flywheel Housing & Oil Sump | 8-9 | Parts Remarks |
| Cylinder Head & Bonnet | 10-11 | Parts Remarks |
| Suction Manifold & Air Cleaner | 12-13 | Loose Parts |
| Exhaust Manifold & Silencer | 14-15 | Loose Parts |
| Camshaft & Driving Gear | 16-17 | Parts Remarks |
| Crankshaft & Piston | 18-19 | Parts Remarks |
| Lub. Oil System | 20-21 | Lubrication Oil System Assembly Diagram, Lubrication Oil System Parts List, Lubrication Oil System Parts Overview |
| Cooling Water System | 22-23 | Loose Parts |
| Fuel Injection Pump | 24-25 | Assembly Remarks |
| Governor | 26-27 | Governor Assembly Diagram, Governor Parts List, Governor Parts Overview |
| Fuel Injection Valve | 28-29 | Fuel Injection Valve Assembly Diagram, Fuel Injection Valve Parts List, Fuel Injection Valve Parts Overview |
| Fuel Line | 30-31 | Loose Parts |
| Starting Motor | 32-33 | Loose Parts |
| Generator | 34-35 | Loose Parts |
| Gasket Set | 36-37 | Optional Parts, Loose Parts |
Every system also includes an assembly diagram and a parts list.
Yanmar 4TNE88-ETBC / 4TNV88-QTBC (TB150C) Common Problems This Manual Covers
Clogged injectors from stale fuel
Diesel that has sat turns to varnish and plugs the nozzles, and the engine answers with rough running and smoke. The Fuel Injection Valve pages break the injector down into its individual components so you can order only what is actually worn.
Manual Section: Fuel Injection Valve p. 28Gummed fuel lines and filters
Old fuel leaves a red jelly in the lines and screens that starves the injection pump. When cleaning is not enough, the Fuel Line spread identifies every pipe, clamp, and joint for a complete replacement.
Manual Section: Fuel Line p. 30Overheating and cooling water failures
A tired water pump or a blocked circuit will push this engine to shutdown temperatures, and a warped head follows close behind. The Cooling Water System diagram numbers every component in the circuit, including the loose parts, so replacements match your serial range.
Manual Section: Cooling Water System p. 22Low oil pressure and bearing damage
Metal in the oil takes out bearings fast, and once it starts, the damage spreads to the crank. The Lub. Oil System pages list the lubrication components by reference number so the whole circuit can go back together fresh.
Manual Section: Lub. Oil System p. 20Hard starting in cold weather
A dragging starter gets blamed on the battery right up until the battery tests fine. The Starting Motor spread identifies the motor and its loose parts so you can price a rebuild against a straight swap.
Manual Section: Starting Motor p. 32Worn crank bearings during rebuild
With the crank measured and the pistons out, the reorder list gets long fast. The Crankshaft & Piston pages tie the bearings, rings, and pistons to reference numbers, with remarks that flag what applies to your engine.
Manual Section: Crankshaft & Piston p. 18Full reseal after teardown
Reusing gaskets on a rebuilt engine is a leak you schedule for later. The Gasket Set pages list the complete set plus optional and loose parts, so one order covers the reassembly.
Manual Section: Gasket Set p. 36Frequently Asked Questions
Which engines does this parts catalog cover?
It covers the Yanmar 4TNE88-ETBC and 4TNV88-QTBC, listed under the TB150C designation, for serial numbers from 14510004. Check the serial plate on your engine against that range before ordering parts from it.
Is this a workshop manual with torque specs and clearances?
No. This is a parts catalog: exploded assembly diagrams with numbered parts lists for each engine group, from cylinder block through gasket set. Use it to identify and order correct part numbers. It does not contain rebuild procedures, torque sequences, or clearance tables.
How do I know a part number matches my serial number?
The How To Read This Parts Catalog section explains the change marks, interchangeability marks, and the Effective Machine No. column, which show where one part superseded another and which serial range each number applies to. p. 2
Does it list a complete gasket set?
Yes. The Gasket Set section lists the full engine gasket set along with optional and loose parts, so you can order the whole reseal as one item or pick individual gaskets from the other sections. p. 36
What format is this manual in?
Immediate download of the complete 37-page searchable Parts Catalog. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print just the pages I need from this Yanmar 4TNE88-ETBC manual?
Yes — the PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
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