Description

Yanmar 4JH-DT, 4JH, 4JH-DT2 1997 Parts Catalog

You have a Yanmar 4JH-DT, 4JH, 4JH-DT2 1997 Parts Catalog on the bench. The aftermarket part number lookup gave you three hits, none match the fuel injection pump you have. That’s the point where you understand that a factory parts catalog isn’t optional—it’s the difference between a correct order and a week of returns. This isn’t a service manual with torque values; this is the 82-page parts bible that tells you exactly which Yanmar part number goes where, down to the screw washer. Automotive Industry Overview relies on this kind of documentation for genuine sourcing.

Parts Index Organization

The catalog splits into two major sections: 4TNE88-ETBZ and 4TNV88-QTBZ. Each has its own CONTENTS and PARTS INDEX. On page 1, you will see a Japanese/English warning: parts listed are not necessarily standard equipment. That matters—if your 4JH-DT has an optional boost compensator, this catalog flags it with interchangeability codes like A, B, C. Following the index gets you to exploded diagrams with callouts. Every part has a part number, quantity, and compatibility notes. You don’t need to guess; you need to read the table.

Fuel Injection Pump Section – Figure 29

Figure 29 covers the FUEL INJECTION PUMP (W/BOOST) for the 4JH-DT and 4JH-DT2. Five variants are listed: (A) 4JH-01, (B) 4JH-01T, (C) 4JH-01Z, (D) 4JH-01TA, (E) 4JH-01T2T. Each has a different pump assy. or camshaft. The table gives you the exact part number—73596-51090 for the pump assy. on the boost compensator type. You also get screw part numbers like 72659-51090 (screw, M6x16) and the proper washer. Without this, you order the wrong pump and lose a day.

Interchangeability Codes: Why They Matter

Look at the table under Figure 29. Columns A through F indicate which parts interchange. For example, item 3 (screw) shows (A) *00185, (D=E/R00150). That means the screw is common across multiple engine serial number ranges. Ignore these codes and you order a part that doesn’t fit your specific 4JH engine serial number. The catalog prints these codes right next to the part number. Use them.

Does This Catalog Cover the 4JH-DT2?

Yes. The header for Figure 29 specifically includes “4JH-DT, 4JH-DT2” in the boost compensator remark. The 4JH is also covered as the base engine. The entire 82 pages are built for the 4JH family. If you own a 4JH-DT2 with a later serial number, the interchangeability codes will show if a part supersedes. This is OEM data, not aftermarket guesswork.

Why OEM Parts Catalogs Beat Aftermarket

Aftermarket catalogs often combine multiple models into one generic listing, leaving out the serial number breaks. This Yanmar catalog shows you the exact figure number, part number, and interchange code for your engine variant. On page 1, the manual even states that part changes happen without notice—so you need the latest factory print. I’ve seen too many backyard jobs where a guy ordered a “universal” pump and then spent a month fighting leaky fittings. Yanmar 4JH-DT Series Engine Parts Catalog 1997 covers the same ground. If you need the TB135 or TL150 variants, see Yanmar TB135 4JH Engine Parts Catalog and Yanmar TL150 4JH Series Engine Parts Catalog.

Audience Fit: Who Needs This on the Bench

If you’re a home garage guy rebuilding a 4JH-DT from a sailboat or a home generator, you need this. Professional mechanics who run a multi-bay shop like mine should have this for every engine they touch. Parts catalogs prevent ordering wrong seals, gaskets, and pumps. Beginners: this is the documentation that shows you how to cross-reference a part number before you call the dealer. It’s 82 pages, not 800—fit for a binder right next to the oil filter wrench.

Source Validity: Original OEM Print

This is a 1997 Yanmar factory-issued parts catalog, scanned from the original Japanese/English publication. The file name Yanmar_4JH-4JH-DT-4JH-DT2_1997_Parts_Catalog_ja-en-25414007462.pdf confirms the source. No reprints, no third-party redactions. The data inside is the same data Yanmar dealers use. For an overview of how this fits into the broader Automotive Industry Overview, consider that OEM sourcing is the standard for minimal warranty claims.

Can I use this parts catalog for the 4JH-DT engine?

Yes. The catalog explicitly covers 4JH-DT, 4JH, and 4JH-DT2.

What is the difference between a parts catalog and a service manual?

A parts catalog gives you part numbers, exploded diagrams, and interchangeability codes for ordering. It does not include repair procedures, torque values, or troubleshooting steps. For those, you need the Yanmar 4JH service manual. Use the parts catalog to order the correct fastener, then use the service manual to install it at the right torque. Both are essential, but this catalog is 82 pages of part numbers only—no fluff, just data.

Stop burning time on aftermarket part lookups that give you a list of maybes. Get the exact part number Yanmar stamped into that engine. Access the Factory Manual and put the right part on the first order.