Description

Yanmar 2TNE68 Parts Catalog – OEM Factory Part Numbers & Exploded Views

If you’ve ever ordered a part for a Yanmar 2TNE68 based on a fuzzy cross-reference or a parts catalog from a third-party publisher, you know the drill: wrong bolt, wrong gasket, wrong O-ring, and a job that should have taken an hour turns into a parts chase across three suppliers. That stops here. This Yanmar 2TNE68 Parts Catalog is the same 33-page document that Yanmar dealers pull up on their terminals – no aftermarket shortcuts, no re-indexed part numbers, no guesswork. Page 2 alone lists the cylinder block assembly with six distinct plugs, three main bearings, and a thrust bearing set, each with an OEM part number that matches the factory hardware. You need the plug PT1/8? Part number 124060-01050. That’s from the catalog, not from a memory.

Cylinder Block Assembly – Exploded View Part Numbers

The catalog opens with the engine block breakdown. Page 2 shows the BLOCK ASSY, CYLINDER (part 719325-01560) followed by the plugs, main bearings, and thrust bearings. Every line includes the item number, reference number, quantity, and figure designation. The exploded diagram on Page 3 puts those numbers into a physical layout so you can see exactly where the thrust bearing .25US (part 119260-02870) sits. If you’re rebuilding the bottom end, this is the page that stops you from ordering the wrong thickness of bearing. The catalog includes the .25US oversize bearing – a detail most aftermarket catalogs omit.

Gear Case Cover and Fuel Feed Pump – Identification

Page 4 covers the gear case cover assembly and the fuel feed pump. You get the cover (part 119260-01590), the oil seal (119620-01800), two O-rings, and a shim pack (119305-01950). The fuel pump assembly (119600-52021) is shown with its mounting bolts and pipe joint – all called out by Yanmar’s own reference numbers. For a shop that sees a lot of small vertical Yanmar engines, this section saves the half-hour of searching through microfiche or online forums to find a fuel pump seal part number. The O-ring part numbers (24311-000320 and 24341-000240) are right there, cross-checked against the exploded view on Page 5.

Engine Section: Small Vertical (SV) Classification

The catalog header confirms this applies to the ENGINE section, SMALL VERTICAL (SV), model series TNE. That means the parts listed here are specific to the 2TNE68 and its variant 2TNE68-EBVA (PC number Y00B6371). The OCR data at Page 1 shows the language settings (English and Japanese) and the section codes. Do not try to use this catalog for a 3TNE68 – the block and head gasket are different. If you need parts for a different Yanmar TNE model, check the related catalogs like Yanmar 2TNE68, B1U-1 2003 Parts Catalog – Factory Specs or Ammann Yanmar B12 B17 Parts Catalog. For the B27 series, see Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs.

3 Systems Where the Parts Catalog Prevents Ordering Errors

First, the cylinder head studs: Page 2 lists ten studs (part 119266-01200) and the head gasket (119309-01330). Aftermarket catalogs often sell a generic M10 stud that is too long or has the wrong thread pitch. Second, the oil seal on the gear case cover: the catalog specifies a HTC456208 seal. Third, the fuel pump O-ring: size 1A P-32.0 (24311-000320) – match that against a standard O-ring kit and you’ll find the OD is different. Those three examples alone have saved my customers from a second teardown.

OEM vs Aftermarket: Why Factory Part Numbers Matter

I’ve torqued more head bolts than most techs have had shifts. Aftermarket parts catalogs for the 2TNE68 routinely renumber the components to hide their source, or worse, they omit the oversize bearing listings and the special plug sizes. This Parts Catalog comes straight from Yanmar’s own publishing system – the same one used by the factory service network. Every part number in the 33 pages is traceable to the original engineering release. If you are working on a construction site and need a replacement plug for the block, you want the Yanmar number, not a cross-referenced “equivalent” that might have a different sealing angle. For a broader look at why factory documentation matters, Automotive Industry Overview on Wikipedia provides context on original equipment specifications.

How to Use the 33-Page Catalog on the Workbench

Keep a printed copy or a tablet with the PDF open next to the engine. The catalog is not a repair manual – it does not give removal procedures or torque specs. What it does give is the exact part numbers and quantities for every component from the cylinder block to the gear case cover. When you’re ordering, read the part number off the page, verify the quantity, and cross-check the figure reference (e.g., “REFER TO Fig. 6” on Page 3). If a part is marked “.25US” (undersize), order that – do not assume a standard bearing will fit after a line bore. The catalog lists three main bearings (standard) and three .25US thrust bearings. That level of detail is why I insist on OEM parts catalogs for any rebuild.

Can I use this catalog for the 2TNE68-EBVA variant?

Yes. Page 1 identifies the PC name as 2TNE68-EBVA, so this catalog covers that specific variant.

What if I need a part not listed in the 33 pages?

The catalog lists all normally replaceable components for the base engine. If a part number is missing (e.g., the injection pump or starter motor), those are covered in separate chassis or electrical catalogs. For this engine, the fuel feed pump is included; the injection pump is not. You will need to cross-reference the engine serial number with Yanmar’s broader parts database. The catalog does show the pipe joint for the fuel line (104264-59030) and the pipe joint bolt (105582-59150), so you can at least replace the connections. If you cannot find a gasket or O-ring, double-check that you are looking at the correct figure – sometimes a gasket is listed under a different assembly (e.g., the gear case cover gasket is on Page 4, item 19). And always verify with your local Yanmar dealer before ordering any part that is critical to sealing or timing.

Don’t waste another afternoon chasing wrong part numbers. Access the Factory Manual now and start ordering the exact Yanmar components your 2TNE68 needs.