All 50 pages of this Yanmar 4TNV98CT-WTB and P-TB290EBA Parts Catalog map both engines component by component, with factory exploded views and OEM part numbers for every assembly from intake to exhaust. Inside: a complete set of assembly figures organized by system, spanning Cylinder Block, Gear Housing, Flywheel Housing, and Cylinder Head all the way through Turbocharger, DPF, ECU, Electric Parts, and Gasket Set. Every figure pairs a numbered exploded view with the full parts list for that assembly, so you can positively identify a Camshaft Pulser Gear, a DPF Pressure Sensor Unit, or a Flywheel Rev Sensor and pull the right OEM number without guessing. Cross-reference the EGR Cooler, Throttle Body, and Fuel Injection Valve against the same callouts Yanmar's own parts counter uses. No more squinting at worn stampings or calling the dealer to confirm what you're holding. Bookmarked by assembly, jump straight to any system and find your part number fast.
What's Inside This Yanmar 4TNV98CT-WTB, P-TB290EBA Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 6-7 | Block Assy Cylinder, Plug, Bolt Metal Cap, Bush Camshaft, Bearing Thrust, Gasket Cyl Head |
| Gear Housing | 8-9 | Case Gear, O-Ring, Pump Assy Oil, Cover Filler, Pipe, Seal Oil |
| Flywheel Housing & Oil Sump | 10-11 | Housing Flywheel, Seal, Sump Assy Oil, Plug Drain, Sensor Flywheel Rev |
| Cylinder Head & Bonnet | 12-13 | Head Assy Cylinder, Valve, Rocker Arm, Bonnet Assy, Breather, Plug Glow |
| Suction Manifold | 14-15 | Manifold Assy Intake, Sensor Air Temp, Duct Intake, Collector Assy, EGR Valve, Throttle Body |
| Exhaust Manifold | 16-17 | Manifold Exhaust, Sensor Exh Temp, Pipe Exh Pressure, EGR Cooler, EGR Valve, Clamp Assy |
| Diesel Particulate Filter (DPF) | 18-19 | DPF Assy, Sensor Exh Temp, Case DOC, Silencer DPF, Stiffener DPF, Sensor Unit Pressure |
| Camshaft & Driving Gear | 20-21 | Tappet, Shaft Assy Cam, Gear Camshaft, Pulser Cam Gear, Gear Assy Idle, Gear Supply Pump |
| Turbine | 22-23 | Turbocharger, Gasket, Stud, Nut |
| Crankshaft & Piston | 24-25 | Crankshaft Assy, Gear, Pin, V-Pulley, Flywheel Assy, Piston Assy, Ring Assy, Rod Assy |
| Lub.Oil System | 26-27 | Cooler Assy, O-Ring, Bracket, Pipe, Dipstick, Filter |
| Lub.Oil Line | 28-29 | Switch, Pipe Assy, Retainer, Valve Assy, Nozzle, Pin |
| Cooling Water System | 30-31 | Pump Assy, V-Pulley, V- |
| Fuel Supply Pump | 32-33 | - |
| Fuel Injection Valve | 34-35 | - |
| Fuel Line | 36-37 | - |
| Starting Motor | 38-39 | Starter, Armature Assy, Coil Assy, Switch Assy, Pinion Assy, Clutch Assy |
| Generator | 40-41 | Alternator, Adjuster, Spacer, Relay |
| Electronic Control Unit (ECU) | 42-43 | - |
| Electric Parts | 44-45 | Bracket, Harness, Connector, Boot, Band |
| Gasket Set | 46-50 | Packing, Gasket, Seal, O-Ring, Driver, Wrench |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 4TNV98CT-WTB (Common-Rail Diesel, DPF+ECU) | ||
| Takeuchi P-TB290EBA / TB290 | ||
| Parts Catalog | ||
| YOOF2161 | ||
| 50 | ||
| Fuel Injection Valve (p.34), Lub Oil Cooler/Filter (p.26), DPF Assembly (p.18) |
Yanmar 4TNV98CT-WTB, P-TB290EBA Common Problems This Manual Covers
Yanmar 4TNV98CT-WTB fuel injector part number needed, can't identify common-rail assembly versus individual injector component p. 34
Open the Fuel Injection Valve exploded view on page 34. Locate the nozzle holder and injector body as separate line items on page 35 to confirm which sub-assembly you need. Then check the Fuel Line parts list on page 36 for return-line fittings and banjo bolt part numbers before placing the full order.
Manual Section: Fuel Injection ValveFuel supply pump assembly part number unclear, can't tell which components include the high-pressure rail circuit p. 32
Open the Fuel Supply Pump diagram on page 32 and pull the pump assembly part number from the exploded view. Cross-reference the Fuel Line section on page 36 to confirm high-pressure rail fitting and overflow valve part numbers. Order both sections together to avoid a second purchase when fittings arrive separately from the pump.
Manual Section: Fuel Supply PumpEGR valve part number unclear, can't tell if the component belongs to the intake or exhaust manifold assembly p. 14
Check both the Suction Manifold diagram on page 14 and the Exhaust Manifold diagram on page 16. The EGR valve appears in each section with different part numbers depending on which side you are replacing. Match the exploded view position to your removed component, then pull the correct part number from the corresponding parts list.
Manual Section: Suction ManifoldOrdering a complete lube oil service kit, need part numbers for the full cooler, filter, and line assembly p. 26
Open the Lub.Oil System diagram on page 26 and locate the cooler assembly, filter, and bracket part numbers from the exploded view. Cross-reference the Lub.Oil Line section on page 28 to add pipe assemblies, nozzles, and valve assembly part numbers. Ordering from both sections covers the full circuit without a follow-up parts call.
Manual Section: Lub.Oil SystemECU replacement needed, can't identify which harness connectors and bracket components belong to the control unit assembly p. 42
Open the Electronic Control Unit diagram on page 42 to identify the ECU bracket and mounting hardware part numbers. Then turn to the Electric Parts section on page 44 for the harness, connectors, boots, and cable bands that attach to the ECU. Pulling from both sections ensures you order the complete electrical interface in one call.
Manual Section: Electronic Control Unit (ECU)DPF pressure sensor and exhaust temperature sensor part numbers needed, unclear which components are sold separately from the main assembly p. 18
Reference the Diesel Particulate Filter diagram on page 18. The exploded view separates the DOC case, DPF silencer, and stiffener from the Sensor Unit Pressure and Sensor Exh Temp, which carry distinct part numbers. Pull each sensor part number individually from the parts list before ordering to avoid receiving only the mechanical assembly.
Manual Section: Diesel Particulate Filter (DPF)Frequently Asked Questions
How do you fix yanmar 4TNV98CT-WTB fuel injector part number needed, can't identify common-rail assembly versus individual injector component?
Open the Fuel Injection Valve exploded view on page 34. Locate the nozzle holder and injector body as separate line items on page 35 to confirm which sub-assembly you need. Then check the Fuel Line parts list on page 36 for return-line fittings and banjo bolt part numbers before placing the full order.
How do you fix fuel supply pump assembly part number unclear, can't tell which components include the high-pressure rail circuit?
Open the Fuel Supply Pump diagram on page 32 and pull the pump assembly part number from the exploded view. Cross-reference the Fuel Line section on page 36 to confirm high-pressure rail fitting and overflow valve part numbers. Order both sections together to avoid a second purchase when fittings arrive separately from the pump.
How do you fix EGR valve part number unclear, can't tell if the component belongs to the intake or exhaust manifold assembly?
Check both the Suction Manifold diagram on page 14 and the Exhaust Manifold diagram on page 16. The EGR valve appears in each section with different part numbers depending on which side you are replacing. Match the exploded view position to your removed component, then pull the correct part number from the corresponding parts list.
How do you fix ordering a complete lube oil service kit, need part numbers for the full cooler, filter, and line assembly?
Open the Lub.Oil System diagram on page 26 and locate the cooler assembly, filter, and bracket part numbers from the exploded view. Cross-reference the Lub.Oil Line section on page 28 to add pipe assemblies, nozzles, and valve assembly part numbers. Ordering from both sections covers the full circuit without a follow-up parts call.
Is this Yanmar 4TNV98CT-WTB, P-TB290EBA Parts Catalog a digital download?
This is a 50-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.
Am I able to print pages from this manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Document Quality
This document is a mix of scanned and native digital pages. You can search and copy all text, as scanned pages include an OCR layer. The text quality is consistently crisp and easy to read throughout. Diagrams and illustrations are raster images, but their labels are clear and readable. Pages are generally clean, with some minor skewing on scanned content, and there is one blank "Memo" page included.
Reviews
There are no reviews yet.