Description

Yanmar 3TMHA, 3TMHA-F, 3TMHA-S Parts Catalog

If you’re rebuilding a Yanmar 3TMHA, 3TMHA-F, or 3TMHA-S and you’re hunting for a part number, you already know the frustration of generic catalogs that guess at what you need. This is the factory document – the one the dealer uses. 143 pages of nothing but exploded views, OEM part numbers, and quantity counts. I’ve been wrenching for 28 years and I’ll tell you straight: if you don’t have the right part number, you’re going to order the wrong liner, gasket, or bolt. That costs time and money. This catalog gives you the exact reference from the factory.

Cylinder Block Assembly – Exploded View on Page 1

You get the full cylinder block breakdown with separate columns for the 3TMHA (A), 3TMHA-F (B), and 3TMHA-S (C). Each part – from the block assembly itself (729350-01560-Z) to the O-rings, main bearings, and sump assembly – is listed with quantity and revision codes. Page 1 shows the head bolts, studs, and even the shim set (121450-01951). Need the dipstick? Page 2. That kind of detail keeps you from ordering parts that don’t fit.

Gear Housing: What You Get from the OEM Catalog

Page 3 covers the gear housing assembly. The catalog lists two versions of the housing assembly: 721454-01611-Z and 721454-01612-Z, including a note for a later revision. No aftermarket catalog gives you that level of accuracy. For other Yanmar engine models, check out Ammann Yanmar B12 B17 Parts Catalog.

Factory vs Aftermarket: Why This Catalog Matters

Aftermarket parts lookups rely on reprints and cross-references that can be outdated or plain wrong. This is a direct scan of the original Yanmar publication – you can see the copyright on every page. The part numbers, revision letters (N for new, K for change), and engine serial number splits are all preserved. If you’re ordering a cylinder liner or a head gasket, you want the exact OEM number. This catalog gives you that. I’ve seen guys waste a week on the wrong part because they trusted a third-party site. Don’t be that guy.

143 Pages of Precision Parts Data

Every page is a category: cylinder block, gear housing, and more. The catalog follows the factory numbering system (Y00T2321). You get part numbers, descriptions, quantities per engine, and notes on revisions. The Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs is another solid reference if you work on those models. For context on why factory data matters, read the Automotive Industry Overview. Also check Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM. That’s how you build a reference library.

Who Should Buy This Yanmar Parts Catalog?

If you own a 3TMHA, 3TMHA-F, or 3TMHA-S – whether in a mini-excavator, generator, or pump – this catalog is for you. DIY mechanics rebuilding a Yanmar diesel, equipment owners maintaining their fleet, even shop owners who need to look up parts fast. You don’t need to be a pro to use it; the exploded views are straightforward. But you do need to pay attention to the revision notes. For general automotive repair background, see Automotive Industry Overview.

Does this catalog replace the service manual?

No. You need both – this for parts, the service manual for torque specs and procedures.

Can I use this catalog for the 3TMHA-F and 3TMHA-S?

Yes. Each exploded view shows three columns (A, B, C) for the three engine variants. For example, on page 1 the cylinder block section lists separate part numbers for each model where they differ. The 3TMHA-F and 3TMHA-S use different oil sump gaskets and cylinder head bolts – this catalog shows you exactly which part number belongs to which engine. You can also see change notes and superseded parts indicated by asterisks and revision letters. That saves you from ordering a part that was replaced six years ago.

How many pages and what’s the format?

143 pages in PDF, direct scan of original factory document.

Are the part numbers still current?

Some may be superseded, but the catalog includes revision notes. Always verify with Yanmar dealer for latest.

You’ve seen enough guesswork. Grab the factory parts catalog for your Yanmar 3TMHA, 3TMHA-F, or 3TMHA-S and get the right part the first time. Access the Factory Manual now.