Description

Yanmar YM1100D Parts Catalog

I’ve lost count of how many times a tech has brought me a bin of wrong bolts because they used a third-party parts lookup. On a Yanmar YM1100D, the 2T73 engine has specific stud lengths, special washers, and O-rings that Yanmar YM1100D Parts Catalog gets right. This is the exact document the factory puts in the dealer’s hands – 54 pages, no aftermarket reinterpretation, no translation errors past the bilingual column. If you’re rebuilding a cylinder head or tracking down a leaky lower cover, you want the part number from this book, not a guess.

2T73 Engine Cylinder Block: What You Get on Pages 3-5

The first assembly section covers the cylinder block assy. Page 3 shows an exploded view with 36 items. Page 4 lists part numbers like 724060-01561 for the cylinder block assy itself. You also get the studs for cylinder head mounting: part 124060-01200 (stud A) and 124060-01210 (stud B). The column labelled “互換性 Interchangeability” tells you whether a part supersedes or is shared with other models. I’ve seen a shop order the wrong head nut because they ignored that column – don’t be that guy. The “備考 REMARKS” column flags items like “T.S.No.8” for special tools needed.

Interchangeability and “Not Sold Separately” Marks

Look at the bottom of page 4. You’ll see a ** mark next to some part numbers – in Japanese that reads “印:現行の単体販売区分シ-ン” and the English note says “** MARK: NOT SOLD SEPARATELY”. That means the item is only available as part of a larger assembly. For the YM1100D, the cylinder lower cover assembly (part 124060-01741) includes a gasket and O-ring you can’t order individually. Trying to buy just the packing? You’ll get a backorder. The manual saves you that headache.

Parts List Structure: How to Read the Table

Each table has seven columns: item number, part number, part name, quantity, interchangeability, sales unit, and remarks. Section code “01” at the top of page 4 tells you this is the cylinder block group. The parts catalog for the Yanmar YM1100D uses a consistent numbering system – the first three digits of a part number (e.g., 724) often indicate the material or finish. When you’re cross-referencing with a Automotive Industry Overview, you’ll see why OEM part numbers matter for safety-critical fasteners like cylinder head studs.

Why an OEM Parts Catalog Beats Aftermarket Cross-References

An aftermarket catalog will tell you “equivalent to Yanmar 124060-01200” but won’t show the 30-degree chamfer on the stud shoulder or the torque sequence for the head nut. This 54-page document is the source that aftermarket companies try to copy – and often get wrong. The OEM data includes the flange bolt part number 26116-080163 (M8x16) that matches the thread engagement depth required on the mounting flange. Use the wrong length and you’ll strip the timing gear case. I’ve had to helicoil two shops’ mistakes because they trusted a generic chart.

Does This Catalog Cover the Fuel System?

No. This is a Parts Catalog for the 2T73 engine block and its immediate components – cylinder block, head studs, lower cover, timing gear case flange, starter studs, and mounting brackets. It does not cover injection pump, injectors, or fuel lines. If you need those, look at the Ammann Yanmar B12 B17 Parts Catalog or the Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs for more recent models. But for the YM1100D’s bottom end, this is the only document you should trust.

3 Reasons to Keep This Catalog on Your Bench

1. Factory part numbers for every bolt, washer, and seal inside the 2T73 block – no cross-referencing needed.
2. Interchangeability notes that tell you when a newer part supersedes the original without changing fitment.
3. 54 pages of exploded diagrams and parts tables that let you see exactly how the assembly goes together before you order a single piece.

FAQ

Is this the same catalog the dealer uses?

Yes. This is the factory-issued parts list for the YM1100D with the 2T73 engine. Identical to what a Yanmar dealership would pull up on their system in the 1980s and 1990s.

What year model does it cover?

No publication year is printed on the document. It covers the YM1100D tractor series produced from the late 1970s through the 1990s with the 2T73 engine. If your serial number matches the engine family, you’re covered.

Does it include torque specs?

No. This is a parts catalog, not a service manual. Torque values for cylinder head nuts and bolts are found in the factory service manual. However, the part numbers for the head nuts (103328-01240) and washers (22351-080014) are correct – use those and then get the torque spec from the appropriate service manual.

Can I order parts directly from this catalog?

Yes. Take the seven-digit dash part numbers (e.g., 724060-01561) to any Yanmar dealer or online parts supplier. They will recognize the OEM format. The older six-digit numbers without a dash may require a dealer lookup.

If you are still using a third-party website that lists “equivalent” part numbers without the factory interchange codes, you’re gambling with your rebuild time and money. The Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM is another example of the level of detail these factory books offer. Get the real document. Access the Factory Manual.