Description

Yanmar YB221U, YB221UZ, B22(-1) 1990 Parts Catalog

If you’re staring at a Yanmar crawler backhoe with a busted hydraulic line or a worn bucket pin, the last thing you need is a generic parts list that doesn’t match the bolt pattern. That’s where this 1990 **Yanmar YB221U, YB221UZ, B22(-1) Parts Catalog** comes in. 161 pages of factory-issued breakdowns, all in original OEM format. No guesswork on part numbers, no third-party reprints that add a decimal in the wrong place. I’ve seen aftermarket catalogs cost a guy a week’s pay because they mislabeled a bearing. This one gets it right.

Engine and Fuel Systems: Chapter Breakdown

This catalog splits into two major sections: vehicle and engine. The engine section covers the 3TN75L-RB, a vertical 3-cylinder water-cooled diesel. The parts breakdown for the engine appears under FIG.6 (Engine) and FIG.7 (Fuel Tank & Fuel Pipe). You get exploded views of the injection system, fuel lines, and tank assembly. The Fuel section alone covers tank mounting brackets, pipe clamps, and the strainer – all with Yanmar part numbers. No need to cross-reference three different sources; it’s all in one figure reference.

Does This Parts Catalog Include Wiring or Torque Specs?

Short answer: no. The preface on page 1 explicitly states this is a parts catalog, not a service manual. It tells you to use simplified illustrations and to always select Yanmar Genuine Parts. If you need torque specs for the cylinder head or wiring diagrams for the dash, you want the shop repair manual, not this. But for ordering the correct seal kit or hydraulic hose, this catalog is spot-on. It lists the exact part number for the Engine mount, radiator, and even the bonnet hinges.

3 Key Sections for the Backhoe Owner

First, the ARM & BUCKET LINK section (FIG. 54) – critical for anyone replacing bushings or pins on the backhoe attachment. Second, the HYD. OIL PUMP & JOINT section (FIG. 35, 38) – vital if your pump is leaking or you’re rebuilding the hydraulic bank. Third, the AIR CLEANER & SILENCER (FIG.4) – a common failure point on dusty jobsites. Each figure has a corresponding parts list with quantities and paint codes if applicable. The catalog also includes a TABLE OF PAINTED COLOR on page 4, with Munsell numbers and Yanmar spray can codes (like Yanmar Cream White 5.0Y9/1). That matters if you’re touching up a restoration.

Get the Right Parts with FIG. References

Stop hunting through blurry online diagrams. The manual uses a consistent picture-index system. Every assembly is numbered and called out in the figure – from the CABIN (FIG.30) to the BOOM (FIG.57). You’ll find the B22(-1) canopy and cabin specs listed separately in the specs table on page 2. For example, the transport width for the B22-P(R) canopy is 1360 mm, while the cabin version (B22-C(R)) is 1375 mm. That means a different ROPS part number. The catalog captures those variations. If you need related documentation, check the Ammann Yanmar B12 B17 Parts Catalog and the Yanmar Crawler Backhoe YB271 B27 Parts Catalog. For larger machines, see the YANMAR Crawler Backhoe Parts Catalog YB301/YB351 Series.

Paint Color Codes: Yanmar Cream White and More

Page 3 and 4 list the paint specifications for both the old and new (post-January 1989) color schemes. The catalog shows the exact Munsell notation – like 5.0Y9/1 for Yanmar Cream White – and the 16.2 can part numbers. If you’re repainting the bonnet or touch-ups on the canopy, you need those numbers. The OEM spray can part number 981101-06041 for Yanmar New Light Yellow (10YR6.5/8) is in there. Aftermarket paint stores will ask for a Munsell code – here it is.

Source Validity: Why OEM Beats Aftermarket

This catalog was published by Yanmar in 1990, with the last revision (000Y00K2282) in 1996. It’s the final edition. That means all supersessions up to that date are included. Compare that to a third-party site that cobbles together scans from different years. The OEM format uses standard Yanmar part numbering, not a generic system. For context on why factory documentation matters across the Automotive Industry Overview, think about liability and fitment. A wrong part can lock up a pump or crack a block. This catalog prevents that. Also see Automotive Industry Overview for more on OEM standards.

For the Backhoe Owner: Audience Fit

This catalog is for anyone who owns a Yanmar YB221U, YB221UZ, or B22(-1). Whether you run a small excavation company or you’re restoring a 90’s vintage machine in your home garage, the part numbers are the same. The specs table on page 2 gives you the machine mass (2100 kg for canopy, 2220 kg for cabin) and digging force (1700 kgf) – good to know when ordering undercarriage parts. The manual covers both canopy and cabin versions across all four model name variations (YB221U C(R), YB221UZ P(R), etc.).

FAQ

Does this parts catalog show exploded views for the entire backhoe?

Yes. Every major assembly – engine, fuel system, hydraulic pump, arm, bucket, boom, cabin, canopy, bonnet – is shown in exploded-view figures with callout numbers. The picture index at the front tells you which figure to use for each part group.

Can I use this to order hydraulics without the serial number?

You’ll need the machine’s serial number to cross-reference the model suffix (e.g., YB221UZ). The catalog groups parts by model iteration, but serial number breakdowns aren’t included. Yanmar uses serial number ranges for some supersessions – you may need to contact a dealer for exact fitment on early vs. late machines. The preface warns that this is a simplified illustration catalog, not a technical data manual.

Access the Factory Manual – get the 161-page OEM PDF and stop guessing which part you need. No reprints, no third-party garbage. Just the original 1990 Yanmar parts catalog for your YB221U, YB221UZ, or B22(-1).