![Yanmar B50, B50-1, B50-C[R], 4TN84L-RBD parts list for exhaust pipe, muffler flange, gaskets, and air intake components.](https://youfixthis.com/wp-content/uploads/2026/06/yanmar-b50-b50-1-b50-c-r-crawler-backhoe-parts-catalog-000y00s3091-engine-parts-13-300x300.webp)
Need OEM part numbers for your Yanmar 4TNV98-ZQTB engine? This 44-page parts catalog covers every assembly in the P-TB175ECD, from cylinder block through the electronic control unit. Inside, exploded-view diagrams walk through the full engine: crankshaft and piston, fuel injection pump with delivery valves, governor, starting motor with pinion and field coil detail, and a complete gasket set listing every O-ring, packing, and seal by part number. You get clear cross-references for the nozzle holder, shim pack, and injector pipe assemblies in the fuel injection valve section, plus EGR valve and silencer clamp detail in the exhaust manifold figure. Pull the exact ECU shield collar part number from Fig. 17 without guessing at aftermarket substitutes. Stop ordering the wrong part. Bookmarked by assembly, search any component name and land on the right exploded view in seconds.
What's Inside This Yanmar 4TNV98-ZQTB, P-TB175ECD Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 6-7 | Block Assy, Cylinder, Plug, Bolt, Metal Cap, Bush, Camshaft, Main Bearing Set |
| Gear Housing | 8-9 | Housing, Gears, Pump Assy, LUB.OIL, O-Ring, Packing, Cover, Seal |
| Flywheel Housing & Oil Sump | 10-11 | Housing, Flywheel, Seal, Oil, Pan Assy, Lub. Oil, Drain Plug, Bolt |
| Cylinder Head & Bonnet | 12-13 | Head Assy, Cylinder, Valve, Spring, Retainer, Rocker Arm, Bonnet Assy, Gasket |
| Suction Manifold & Air Cleaner | 14-15 | Manifold Cmp, Intake, Air Cleaner, Gasket, Heater, Pipe, Element |
| Exhaust Manifold & Silencer | 16-17 | Manifold Assy, Exh, Silencer, Gasket, EGR Valve, Clamp, Bolt |
| Camshaft & Driving Gear | 18-19 | Camshft Assy, Gear, Tappet, Push Rod, Bush, Bolt |
| Crankshaft & Piston | 20-21 | Crankshaft Comp, Piston Assy, Ring Set, Connecting Rod, Flywheel, Gear |
| Lub. Oil System | 22-23 | Dipstic, Lub Oil, Filter, Pipe, LUB.OIL, Switch, Joint |
| Cooling Water System | 24-25 | Pump Assy, Water, V-Belt, Fan, Cooling, Thermostat, Subtank |
| Fuel Injection Pump | 26-27 | Injecton Pump Assy, Setting, Delivery, Timer Set, Valve, Solenoide, Pump Assy, Feed |
| Governor | 28-29 | Packing, Case, Sensor, Gear, Plug, O-Ring |
| Fuel Injection Valve | 30-31 | Fuel Injector, Nozzle Assy, Holder Assy, Spring, Nozzle, Shim Pack, Pipe Assy, Injection |
| Fuel Line | 32-33 | Pipe Assy, F.O.RETURN, Fuel Pump, Filter Assy, Fuel, Sensor Assy, Level, Element Assy |
| Starting Motor | 34-35 | Starter, Armature Assy, Coil Assy, Field, Brush, Switch Assy, Magnetic, Pinion Assy |
| Generator | 36-37 | Alternator, Rotor Assy, Ball Bearing, Bracket, Front, Strar, Relay |
| Electronic Control Unit (ECU) | 38-39 | ECU Cmp, SHIELD.ECU, Collar, Controller, Rubber, Cushion, Screw |
| Gasket Set | 40-44 | Gasket, O-Ring, Packing, Seal, Seal Washer |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Yanmar 4TNV98-ZQTB | ||
| Takeuchi P-TB175ECD | ||
| Parts Catalog | ||
| 44 | ||
| YOOF2161 | ||
| Fuel Filter Element (p.33), Nozzle/Holder/Shim Pack (p.31), Gasket Set (p.40) |
Yanmar 4TNV98-ZQTB, P-TB175ECD Common Problems This Manual Covers
Yanmar 4TNV98-ZQTB fuel filter element part number unclear when sourcing a replacement p. 32
Turn to the Fuel Line exploded view on page 32. Locate the Filter Assy and Element Assy callouts, then confirm the exact part numbers on page 33 before ordering. Record any suffix letters precisely. Cross-reference the Fuel Injection Pump section on page 26 if the feed pump filter is also suspect.
Manual Section: Fuel LineCorrect head gasket part number uncertain when ordering cylinder head rebuild components p. 40
Open the Gasket Set section on page 40 and use the index on page 42 to locate the cylinder head gasket listing. The set covers O-rings, packings, and seals as a kit, but individual items carry separate part numbers. Cross-reference the Cylinder Head and Bonnet exploded view on page 12 to confirm which pieces are included in the kit versus ordered individually.
Manual Section: Gasket SetStarter motor pinion or brush assembly part number needed but sub-components appear interchangeable visually p. 34
Reference the Starting Motor exploded view on page 34. The parts list on page 35 breaks out Armature Assy, Brush, Pinion Assy, Magnetic Switch Assy, and Field Coil Assy as individual line items with separate part numbers. Match the failed component to its labeled callout in the diagram before ordering to avoid receiving a complete Starter assembly when only a brush set is required.
Manual Section: Starting MotorFuel injector nozzle and holder assembly part numbers hard to distinguish when ordering separately p. 30
Go to the Fuel Injection Valve section on page 30. The exploded view on page 31 separates Nozzle Assy, Holder Assy, Spring, and Shim Pack as distinct orderable items with individual part numbers. Order the Shim Pack by its specific catalog number rather than sourcing a generic substitute. Also check page 32 for the Injection Pipe Assy part number if the return or high-pressure lines are being replaced at the same time.
Manual Section: Fuel Injection ValveWater pump assembly part number needed but belt and thermostat are also suspected worn p. 24
Check the Cooling Water System exploded view on page 24. The parts list on page 25 itemizes Pump Assy, V-Belt, Fan, Thermostat, and Subtank as separate line items. If replacing only the belt, locate the V-Belt part number independently rather than ordering the full pump kit. Confirm the Thermostat part number from the same page instead of sourcing a generic equivalent.
Manual Section: Cooling Water SystemECU assembly part number needed after controller fault, mounting hardware condition unknown p. 38
Locate the Electronic Control Unit section on page 38. The parts list on page 39 identifies ECU Cmp, Shield, Collar, Rubber cushions, and Screws as separately orderable items. Order the ECU Cmp by its exact catalog part number. Inspect the Collar and Cushion condition at the same time; their individual part numbers appear on page 39 so damaged isolation hardware can be ordered alongside the controller.
Manual Section: Electronic Control Unit (ECU)Frequently Asked Questions
How do you fix yanmar 4TNV98-ZQTB fuel filter element part number unclear when sourcing a replacement?
Turn to the Fuel Line exploded view on page 32. Locate the Filter Assy and Element Assy callouts, then confirm the exact part numbers on page 33 before ordering. Record any suffix letters precisely. Cross-reference the Fuel Injection Pump section on page 26 if the feed pump filter is also suspect.
How do you fix correct head gasket part number uncertain when ordering cylinder head rebuild components?
Open the Gasket Set section on page 40 and use the index on page 42 to locate the cylinder head gasket listing. The set covers O-rings, packings, and seals as a kit, but individual items carry separate part numbers. Cross-reference the Cylinder Head and Bonnet exploded view on page 12 to confirm which pieces are included in the kit versus ordered individually.
How do you fix starter motor pinion or brush assembly part number needed but sub-components appear interchangeable visually?
Reference the Starting Motor exploded view on page 34. The parts list on page 35 breaks out Armature Assy, Brush, Pinion Assy, Magnetic Switch Assy, and Field Coil Assy as individual line items with separate part numbers. Match the failed component to its labeled callout in the diagram before ordering to avoid receiving a complete Starter assembly when only a brush set is required.
How do you fix fuel injector nozzle and holder assembly part numbers hard to distinguish when ordering separately?
Go to the Fuel Injection Valve section on page 30. The exploded view on page 31 separates Nozzle Assy, Holder Assy, Spring, and Shim Pack as distinct orderable items with individual part numbers. Order the Shim Pack by its specific catalog number rather than sourcing a generic substitute. Also check page 32 for the Injection Pipe Assy part number if the return or high-pressure lines are being replaced at the same time.
How will I receive this Yanmar 4TNV98-ZQTB, P-TB175ECD Parts Catalog?
This is a 44-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you are under the hood. No shipping, no waiting.
Can I print this 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 a scanned PDF, not a native digital file. You can search and copy text throughout the document, as an OCR layer has been applied. The text is generally clear and readable, though it may not be as crisp as digitally-generated text due to the scanning process. All diagrams and illustrations are raster images, meaning they will pixelate if you zoom in significantly, but their labels remain readable. The pages are clean, with only minor scan artifacts like slight background noise, and no notable stains or skewed content. Page 5 is a "Memo" page, serving as a filler.
Reviews
There are no reviews yet.