Part of the Yanmar Parts Manuals.
All 38 pages of this Yanmar 4TNE88 Parts Catalog PDF (OEM #Y00B5943) zero in on one engine family: the 4TNE88-(E)BVA and 4TNE88-(E)BVA(VIO50-1) small vertical engines. Inside, factory exploded views walk through every assembly, from the cylinder block, gear housing, and crankshaft all the way through the fuel injection pump, governor, starting motor, and generator. Each view pairs directly with an OEM part number list, so you can identify exactly what you're looking at and cross-reference the correct factory part before you place an order. The V-belt is designated A-38; your crankcase drain plug is M22, straight from Yanmar's own catalog. Wrong part arriving two days late is money you don't get back. Search by part number, jump to any assembly with the bookmarks, and get your order in right the first time.
What's Inside This Yanmar 4TNE88-(E)BVA Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-2 | Cylinder Block Assy, Main Bearing, Thrust Metal, Camshaft Bush, Cylinder Head Gasket, Main Metal |
| Cylinder Block | 3-4 | Gear Housing Assy, Oil Seal, Gears Housing Flange, Lub. Oil Supply Cap, Gasket, Knock Pipe, Retainer, Hydraulic Oil Pump Cover |
| Gear Housing | 5-6 | Flywheel Housing, Flywheel Cover Cap, Oil Sump Assy, Oil Seal Case Assy, Oil Seal, Oil Sump Spacer |
| Flywheel Housing & Lub. Oil Sump | 7-8 | Cylinder Head Assy, Valve Guide, Intake Valve, Exhaust Valve, Valve Spring, Spring Retainer, Valve Stem Seal, Valve Cap |
| Cylinder Head & Bonnet | 9-10 | Suction Silencer, Air Cleaner Assy, Dust Canister, Element Retainer, Air Cleaner Element, Brace Assy, Rubber Seat, Cleaner Support Assy |
| Suc. Manifold & Air Cleaner | 11-12 | Gasket, Silencer, Silencer Stay, Exhaust Manifold, Exhaust Manifold Gasket |
| Exh. Manifold & Silencer | 13-14 | Camshaft Assy, Camshaft Gear, Thrust Metal, Push Rod, Tappet, Idle Gear Shaft, Gear w/ Bush, Idle Gear Bush |
| Camshaft & Driving Gear | 15-16 | Crankshaft Assy, Crankshaft Gear, Crankshaft V-pulley, Flywheel Assy, Ring Gear, Piston w/ Rings, Piston Ring Set, Piston w/ Ring |
| Crankshaft & Piston | 17-18 | Lub. Oil Pump Assy, Lub. Oil Pump Gasket, Dipstick Guide, Lub. Oil Dipstick, Gasket, Lub. Oil Pipe Assy, Oil Pressure Switch, Lub. Oil Switch |
| Lub. Oil System | 19-20 | Cooling Water Pump Assy, Coolant Pump Assy, Cooling Water Pump Gasket, Gasket, Cw Pump Pk, V-belt, Fan, V-pulley |
| Cooling Water System | 21-23 | Pump w/ Governor & Feed Pump, Fuel Injection Pump Assy, Camshaft, Thrust Ball Bearing, Cam Shaft Support, Support, Plunger w/ Barrel, Retainer A |
| Fuel Injection Pump | 24-25 | Fuel Injection Valve Assy, Fuel Injection Nozzle Assy, Nozzle Holder Assy, Nozzle Spring, Nozzle Spring Seat, Stop Plate, Injection Pipe Retainer, Fuel Injection Pipe |
| Fuel Injection Pipe | 26-27 | Fuel Strainer Assy, Taper Valve, Taper Valve Spring, Fuel Element, Lever, Strainer Cup, Retaining Ring, Spring |
| Fuel Pipe | 28-30 | Governor Case, Packing, Cover, Link, Governor Weight Assy, Sleeve, Control Shaft Assy, Shaft Spacer |
| Governor | 31-32 | Starting Motor, Armatuer, Bearing, Field Coil Assy, Brush, Brush Holder Assy, Brush Spring, Start Brush Spring |
| Starting Motor | 33-34 | Generator, Rotor Assy, Stator Assy, Rear Cover Assy, Regulator Brush Assy, Brush Assy, Fan Side Guide, Diode Assy |
| Generator | 35-36 | Gasket Set, Cylinder Head Gasket, Valve Stem Seal, Nozzle Protecter, Nozzle Protector, Nozzle Seat, Bonnet Gasket, Exhaust Manifold Gasket |
| Gasket Set (Optional) & Tools | 37-37 | Optional |
| Figure Summary | 38-38 | Engine 4TNE88-(E)BVA, Cylinder Block, Gear Housing, Flywheel Housing &Lub.Oil Sump, Cylinder Head & Bonnet, Suc.Manifold & Air Cleaner, Exh.Manifold & Silencer, Camshaft & Driving Gear |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| V-Belt Size | A-38 | p. 20 |
| Drain Plug Size | M22 | p. 6 |
| Spring Pin Size | 6mm x 12mm | p. 8 |
| Wire Size | 0.6mm | p. 30 |
Yanmar 4TNE88-(E)BVA Common Problems This Manual Covers
Need replacement fuel strainer and element part numbers for Yanmar 4TNE88 hard starting in cold weather p. 28
Inspect the exploded views on page 28 to identify the correct fuel strainer assembly and fuel element. Cross-reference the part numbers for your specific serial number. Verify the fuel pipe wire size is 0.6mm as shown on page 30 before ordering replacements.
Manual Section: Fuel PipeCannot find correct part numbers for leaking sump seals and stripped oil pan drain plug p. 7
Check the parts diagram on page 7 to locate the exact oil seal and sump assembly part numbers. Locate the M22 drain plug size listed on page 6. Match these specific components with your model variant in the index to ensure proper fitment.
Manual Section: Flywheel Housing & Lub. Oil SumpNeed to order a replacement water pump and drive belt for an engine overheating condition p. 21
Review the cooling system layout on page 21 to find the water pump assembly and thermostat part numbers. Identify the correct A-38 V-belt size on page 20. Order the exact gasket and fan parts corresponding to your specific engine serial number.
Manual Section: Cooling Water SystemLooking for oversized piston rings and complete gasket sets to fix poor compression and smoke p. 37
Examine the optional gasket sets and tools index on page 37 to find the complete cylinder head gasket kit. Order the 0.25mm piston ring oversize components referenced on page 16. Verify all part numbers against your specific engine block serial number.
Manual Section: Gasket Set (Optional) & ToolsFrequently Asked Questions
What are the replacement specifications for Fuel filter?
The manual identifies the fuel filter element with part number 129100-55650, labeled as "ELEMENT, FUEL". This component is part of the fuel pipe system, as shown in the Fuel Pipe section.
What are the replacement specifications for Air filter?
The manual identifies the air cleaner element with part number 129150-12510, labeled as "ELEMENT, AIR CLEANER". This element is part of the suc. manifold & air cleaner assembly.
How do you fix need replacement fuel strainer and element part numbers for Yanmar 4TNE88 hard starting in cold weather?
Inspect the exploded views on page 28 to identify the correct fuel strainer assembly and fuel element. Cross-reference the part numbers for your specific serial number. Verify the fuel pipe wire size is 0.6mm as shown on page 30 before ordering replacements.
How do you fix cannot find correct part numbers for leaking sump seals and stripped oil pan drain plug?
Check the parts diagram on page 7 to locate the exact oil seal and sump assembly part numbers. Locate the M22 drain plug size listed on page 6. Match these specific components with your model variant in the index to ensure proper fitment.
How will I receive this Yanmar 4TNE88-(E)BVA & variants Parts Catalog?
A 38-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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