All 40 pages of this Yanmar 4TNV98-STB1, TB180FR Parts Catalog are built for one purpose: finding the exact part number before you place that order. Inside, you get exploded-view diagrams for every major engine assembly, from the cylinder block and gear housing to the fuel injection pump, governor, and starting motor. Each diagram pairs illustrated component breakaways with factory part numbers and cross-references, so you can identify a crankshaft thrust bearing or nozzle holder assembly without guessing at descriptions. Match your alternator to the 12V-55A factory spec, or confirm your crankshaft V-pulley by its 130/145 mm diameter before you pull the trigger on a replacement. Wrong parts shipped are a week wasted. Bookmarked and keyword-searchable, this PDF lets you jump straight to Fuel Line or Gasket Set sections and land on the right diagram in seconds.
What's Inside This Yanmar 4TNV98-STB1, TB180FR Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 5-6 | Block Assy, Cylinder, Main Bearing Set, Bearing Assy, Thrust, Gasket, Cylinder Head, Bush |
| Gear Housing | 7-8 | Housing Assy, Cover, G, Seal, Oil, Pump Assy, Lub. Oil, Housing |
| Flywheel Housing & Oil Sump | 9-10 | Housing, Flywheel, Sump Assy, Oil, Drain Plug M22, Seal HTC95, 115, 12 |
| Cylinder Head & Bonnet | 11-12 | Head Assy, Cylinder, Valve (Exh), Valve Spring, Bonnet Assy, Rocker Arm, Gasket, Cylinder Head |
| Suction Manifold | 13-14 | Manifold, Air Intake, Packing (Int. Manifold, Air Heater, Clamp 80 |
| Exhaust Manifold & Silencer | 15-16 | Manifold, Exhaust, Gasket, Silencer, Clamp Assy, Stud Bolt M 8X 80 |
| Camshaft & Driving Gear | 17-18 | Camshft Assy, Gear, Camshaft, Gear Assy, Idle, Tappet, Push Rod |
| Crankshaft & Piston | 19-20 | Crankshaft Comp, Piston W/RING, Rod Assy, Connecting, Ring Set, Piston, Flywheel Assy, Metal Assy |
| Lub.Oil System | 21-22 | Dipstick, Filter, Pipe Assy, Lub. Oil, Switch, Oil Cooler, Protecter |
| Cooling Water System | 23-24 | Pump Assy, Water, V-Belt, Fan, Cooling, Thermostat, Sub-Tank Assy |
| Fuel Injection Pump | 25-26 | Pump Assy, F. Inject, Valve Assy, Dilevery, Timer Set, Feed, Damper Assy |
| Governor | 27-28 | Packing, Case, Lever, Regulator, Bolt, Idle Limit, Solenoid, Stop |
| Fuel Injection Valve | 29-30 | Valve Assy, F. Inject, Nozzle Assy, Holder Assy, Nozzle, Spring, Shim Pack |
| Fuel Line | 31-32 | Bracket, Filter, Fuel, Pipe Assy, Protector, Separator Assy |
| Starting Motor | 33-34 | Starter, Armature Assy, Coil Assy, Field, Pinion Assy, Clutch Assy, Switch Assy |
| Generator | 35-36 | Alternator Assy, Rotator Assy, Bearing, Ball, Pulley, Regulator Assy, Relay, Safety |
| Gasket Set & Tools | 37 | Gasket Set (Non-Asb.), Packing, Fuel Return, Gasket, Cylinder Head, Seal, Valve Stem, Flex Hone |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Alternator rating | 12V-55A | p. 35 |
| Crankshaft V-Pulley Diameter | 130/145 mm | p. 19 |
Yanmar 4TNV98-STB1, TB180FR Common Problems This Manual Covers
Yanmar 4TNV98-STB1 fuel filter part number unclear after service, multiple conflicting options at supplier p. 31
Open the Fuel Line exploded view on page 31. The fuel filter and separator assembly appear as separate catalog entries with distinct part numbers. Verify your engine model-code suffix before placing an order, as close 4TNV98 variants share similar layouts but filter bracket sub-assembly part numbers differ by configuration.
Manual Section: Fuel LineInjection valve part number hard to confirm by model suffix, multiple nozzle variants listed at parts supplier p. 29
Locate the Fuel Injection Valve exploded view on page 29. The nozzle holder, nozzle assembly, spring, and shim pack each carry separate part numbers. Order by individual sub-component rather than a single injector unit, and cross-reference the nozzle holder entry against your engine serial range to avoid receiving an incompatible nozzle variant.
Manual Section: Fuel Injection ValveCylinder head gasket set part number uncertain, multiple suffix variants listed and correct replacement hard to confirm p. 11
Check the Cylinder Head and Bonnet parts list on page 11 for the head gasket and valve spring entries. Then cross-reference page 37, which lists the complete Gasket Set (Non-Asbestos) as a single kit part number covering the head gasket, valve stem seals, and packing together. Ordering the full kit eliminates the risk of missing a sealing component.
Manual Section: Cylinder Head & BonnetCooling system thermostat and water pump part numbers needed after overheating, correct assembly hard to confirm p. 23
Open the Cooling Water System parts list on page 23. The thermostat, water pump assembly, V-belt, and cooling fan are listed as separate catalog entries. Cross-reference the crankshaft V-pulley diameter of 130/145 mm shown on page 19 when ordering the V-belt to confirm belt sizing matches the pulley before purchase.
Manual Section: Cooling Water SystemAlternator part number needed for replacement, need to confirm output rating matches original unit before ordering p. 35
Check the Generator section on page 35. The alternator assembly is catalogued as a complete unit rated at 12V-55A; verify that rating against your machine specification before ordering. Rotor, bearing, pulley, and voltage regulator assembly also appear as separate line items on page 35 if only one sub-component has failed.
Manual Section: GeneratorOil filter and service parts bundle hard to assemble from catalog, dipstick part number also needed p. 21
Open the Lub. Oil System parts list on page 21. The dipstick, oil filter, oil cooler, and lube oil pipe assemblies are each listed as individual catalog entries. Note the oil sump drain plug on page 9, which carries an M22 thread specification, and confirm you are ordering the correct replacement plug alongside the filter when building a service kit.
Manual Section: Lub.Oil SystemFrequently Asked Questions
How do you fix yanmar 4TNV98-STB1 fuel filter part number unclear after service, multiple conflicting options at supplier?
Open the Fuel Line exploded view on page 31. The fuel filter and separator assembly appear as separate catalog entries with distinct part numbers. Verify your engine model-code suffix before placing an order, as close 4TNV98 variants share similar layouts but filter bracket sub-assembly part numbers differ by configuration.
How do you fix injection valve part number hard to confirm by model suffix, multiple nozzle variants listed at parts supplier?
Locate the Fuel Injection Valve exploded view on page 29. The nozzle holder, nozzle assembly, spring, and shim pack each carry separate part numbers. Order by individual sub-component rather than a single injector unit, and cross-reference the nozzle holder entry against your engine serial range to avoid receiving an incompatible nozzle variant.
How do you fix cylinder head gasket set part number uncertain, multiple suffix variants listed and correct replacement hard to confirm?
Check the Cylinder Head and Bonnet parts list on page 11 for the head gasket and valve spring entries. Then cross-reference page 37, which lists the complete Gasket Set (Non-Asbestos) as a single kit part number covering the head gasket, valve stem seals, and packing together. Ordering the full kit eliminates the risk of missing a sealing component.
How do you fix cooling system thermostat and water pump part numbers needed after overheating, correct assembly hard to confirm?
Open the Cooling Water System parts list on page 23. The thermostat, water pump assembly, V-belt, and cooling fan are listed as separate catalog entries. Cross-reference the crankshaft V-pulley diameter of 130/145 mm shown on page 19 when ordering the V-belt to confirm belt sizing matches the pulley before purchase.
What format is this manual in?
You get a 40-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Is this Yanmar 4TNV98-STB1, TB180FR Parts Catalog printable?
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 is a scanned PDF document. You can search and copy the full text due to an OCR layer, and the text is generally crisp and readable throughout. Diagrams and illustrations are raster images, and while most labels are clear, some may appear slightly pixelated when zoomed in. Pages are clean with no significant scan artifacts or marks, though page 2 is a blank filler page. Overall, the document is functional for reference.
Reviews
There are no reviews yet.