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 | PcNo, PcName, JpnUse, JpnSec1, JpnSec2, JpnSec3, JpnPreface, EngUse |
| Cylinder Block | 3-4 | Block Assy, Cylinder, Plug Pt1/4, Plug, Plug Pt1/8, Screw, Plug 50, Plug 12, Plug 30 |
| Gear Housing | 5-6 | Housing Assy, Gear, Seal, Oil, Flange, Gears Housing, Stud M 8X 22, Cap, Lub. Oil Supply, Gasket (Non-Asb.), Pipe, Knock L=18 |
| Flywheel Housing & Lub. Oil Sump | 7-8 | Parallel Pin 8X16, Housing, Flywheel, Cap, Flywheel Cover, Bolt M10X25, Bolt M10X30, Sump Assy, Oil, Drain Plug M22 |
| Cylinder Head & Bonnet | 9-10 | - |
| Suc. Manifold & Air Cleaner | 11-12 | Silencer, Suction, Cleaner Assy, Air, Canister, Dust, Retainer, Element, Bolt, Wing, Seal Washer, Air Cleaner |
| Exh. Manifold & Silencer | 13-14 | Gasket (Non-Asb.), Silencer, Stay, Nut W/Washer 8, Nut M 8, Bolt M 8X 20, Manifold, Exhaust |
| Camshaft & Driving Gear | 15-16 | Crankshaft Assy, Gear, Crankshaft, Parallel Pin 8X16, Key 7X 14, Spring Pin 4X10, V-Pulley, Washer |
| Crankshaft & Piston | 17-18 | Repair Part, Pump Assy, Lub. Oil, Gasket, L.O. Pump, Bolt M 6X 25, Guide, Dipstick, Lub Oil, Gasket (Non-Asb.) |
| Lub. Oil System | 19-20 | Fuel Injection Pump, Plug Pt1/4, Pump Assy, C.Water, Coolant, Screw, Plug 1/4, Plug Pt3/8 |
| Cooling Water System | 21-23 | Pump W/Gov.& F.Pump, Pump Assy, F.Inject, Camshaft, Ball Bearing, Thrust, Cam Shaft Support, Support, Key |
| Fuel Injection Pump | 24-25 | Valve Assy, F.Inject, Nozzle Assy, Nut, Nozzle Case, Holder Assy, Nozzle, Spring, Seat, Nozzle Spring, Plate, Stop |
| Fuel Injection Pipe | 26-27 | Strainer Assy, Fuel, Valve, Taper, Spring, Taper Valve, Element, Lever, Cup, Strainer, Ring, Retaining |
| Fuel Pipe | 28-30 | Suction Manifold, O-Ring S6, Case, Governor, Packing, Cover, Link L=30 (Mark 0, Link L=31 (Mark 1 |
| Governor | 31-32 | Classified Mark, Starting Motor, Armatuer, Bearing (1), Bearing (2), Field Coil Assy, Brush (+) |
| Starting Motor | 33-34 | Generator, Rotor Assy, Ball Bearing, Stator Assy, Cover Assy, Rear, Cover, Brush Assy, Regulator |
| Generator | 35-36 | Gasket Set (Non-Asb.), Gasket Kit, Gasket, Cyl. Head, Gasket (Non-Asb.), O-Ring, F.I. Pump, Gasket 16, Seal, Valve Stem |
| 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.
Document Quality
This document is a mixed PDF, containing both native digital text and scanned pages with an OCR layer, allowing you to search and copy text. All text is crisp and easy to read. Diagrams and illustrations are raster images, but they are clear and their labels are readable. Pages are clean with no notable scan artifacts, stains, or skewed content, and there are no blank or filler pages.
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