Description

Yanmar B12-2B, B17-2B 1999 Parts Catalog – 148 Pages of Factory Specs

I’ve seen too many techs order a part based on a cross-reference from a third-party site, then wonder why the bolt holes don’t line up. That’s where the Yanmar B12-2B, B17-2B 1999 Parts Catalog puts you back on solid ground. This is the factory’s own documentation – the 2nd revised edition, published December 1999, with 148 pages of nothing but the stuff you need to identify every nut, hose, and painted bracket on these two crawler backhoes. It’s not a service manual, so don’t expect torque sequences or hydraulic troubleshooting. What you get is a straight-up parts identification tool, and when you’re staring at a disassembled machine, that’s exactly what saves your afternoon.

Let’s be clear: aftermarket parts catalogs often list generic part numbers that don’t account for regional variations like the JP/EX, AS, or LOTUS ROOT specs. This Yanmar original gives you the correct OEM numbers for each variant – B12-2B and B17-2B – right from the source. The preface tells you the history: first edition in 1997, first revision in 1998, and this 2nd revision in 1999. The catalog number is 000Y00K3442. Scrap the older editions once you have this one.

What This 148-Page Parts Catalog Covers for the B12-2B and B17-2B

Open the table of contents and you’ll see SPECIFICATIONS, then PAINTED COLOR LIST for both the JP/EX and AS markets. That’s right – Yanmar painted these machines different colors depending on where they were sold. Then there’s the PICTURESQUE INDEX – a fancy way of saying exploded-view diagrams – split into MAIN PARTS, HYDRAULIC SECTION, and sixty-four figures grouped by system. Each figure number corresponds to a page where you find the part number, description, and quantity. If you need the blade assembly or the boom swing cylinder, you go to the figures. No scanning through a generic index.

Specifications: Why You Need the Right Engine and Dimensions

On page 2 of the PDF – page 2 of the actual catalog – you get the full spec table. B12-2B uses engine 3TNA72L-UBA; B17-2B uses 3TNA72L-UBB. Transport length differs by 15 mm, machine mass by 100 kg, digging depth by 200 mm. The standard bucket width on the B12-2B is 400 mm, on the B17-2B it’s 450 mm. If you’re ordering a replacement bucket or track shoe (230 mm standard), you need to know which model you have. This catalog spits out those numbers so you don’t guess.

Painted Color Lists: Matching Yanmar Factory Finish

Yanmar used at least four different greens on these machines: Peacock Green (Munsell 3.85BG5.5/11.9), New Deep Green (0.6B2.2/4.2), Citrus Green (4.84GY8.42/6.99), and a Dark Olive Green. The PAINTED COLOR LIST section breaks down which part gets which color, with color code numbers (97, 88, 96, etc.) for ordering touch-up paint. If you’re restoring a B12-2B JP/EX, you want the right shade on the boom – the catalog shows it. I’ve seen people spray gloss black on a Yanmar frame because they didn’t have this guide. Don’t be that guy.

Picturesque Index: How to Find the Part Number Fast

The catalog uses a “PICTURESQUE INDEX” with figures 01 through 64. You look up the assembly you’re working on – say the hydraulic section – then find the figure number. Each figure has a callout number next to each part. Flip to the corresponding page (they’re not numbered in the PDF, but the bookmark structure is clear) and you get the part number. The preface warns that this catalog uses simplified illustrations – they’re not ISO engineering drawings – but for part identification they’re plenty accurate. Bookmark the figures you use most.

Is This a Service Manual? Know the Difference

Let me kill one myth right now: this is a parts catalog, not a repair manual. There are zero torque specs, zero wiring diagrams, zero adjustment procedures. The preface says it in plain English: “This parts catalog is not a technical data manual setting forth as servicing procedures.” If you need to know the hydraulic charge pressure or how to rebuild the control valve, you need a separate service manual. But if you’re ordering parts – and you want to make sure you get the correct 46B24L battery (12V, 45Ah) or the right blade cylinder seal kit – this catalog is your only source for genuine Yanmar numbers.

Don’t waste time on aftermarket cross-reference lists that blend multiple models. The Yanmar B12-2B and B17-2B are close, but not identical. Use this 1999 factory parts catalog to pull the exact part number for your serial number range. Access the Factory Manual now and keep it on your tablet in the shop.

Related Manuals

• Ammann Yanmar B12 B17 Parts Catalog
• Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs
• Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM

For background on why OEM documentation matters, see the Automotive Industry Overview and Automotive Industry Overview articles.

Does this catalog include torque specs?

No. This is a parts catalog, not a service manual. Zero torque values.

How do I use the Painted Color List?

Find your machine’s market code (JP/EX or AS). Match the part location (1-4) to the Munsell number. Order paint by the color code (97, 88, etc.) from Yanmar.

Can I use this catalog for the B17-2B AS model?

Yes. The catalog includes a separate PAINTED COLOR LIST for B17-2B AS (Australia spec). The main parts figures apply to all variants unless noted. Check the model table in the preface to confirm your serial number falls within the range listed (30501~).

What is the difference between the 1st and 2nd revised edition?

The 2nd revised (1999) supersedes the 1st revised (1998). Yanmar updates parts numbers when suppliers change. Use the latest edition to avoid obsolete numbers.