Description

Yanmar B50-2 P(R), B50-2 C(R) 1995 Parts Catalog

Spent half a day tracking down a fuel injection pump for a Yanmar B50-2 P(R) only to find the part number in some aftermarket PDF was wrong? That’s the kind of waste that makes me chew metal. This Yanmar B50-2 P(R), B50-2 C(R) 1995 Parts Catalog is the OEM print from Yanmar themselves—250 pages of factory part numbers, interchangeability marks, and exploded views that match what you have on the workbench.

How This Parts Catalog Differs from Aftermarket Copies

Unlike the generic reprints floating around, this catalog comes straight from Yanmar’s original 1995 publication. The part numbers are verified against factory records. On page 1 you’ll see the fuel injection pump assembly listing for engine variants 4JH-D1 through 4JH-D17, with correct part numbers like 728480-51391 and 728485-51391. Aftermarket catalogs often transpose digits or leave out the (S) suffix. This one doesn’t. The preface explains the Level system (parent-child assembly hierarchy) and interchangeability marks such as N, O, R, S, W, Z, K. Forget those details and you’ll order a cam follower that doesn’t fit your engine serial number. The manual also includes a full SPECIFICATIONS chapter, PAINTED COLOR LIST, and multiple picturesque indexes: MAIN PARTS, HYDRAULIC SECTION, and twelve figure groups from 01 to 107. For context on why OEM documentation matters, see Automotive Industry Overview. This catalog gives you the exact reference Yanmar dealerships use, not some scanned copy with missing pages.

Specifications and Paint Codes: Engine Output and Color Matching

Knowing the exact paint color and engine output matters when you’re rebuilding a B50-2 C(R) to original condition. The catalog’s SPECIFICATIONS chapter lists engine power, fuel system details, and dimensions. The PAINTED COLOR LIST gives you the factory color codes and PAINT PART No. so you can order the correct spray paint. No guessing what shade of gray Yanmar used in 1995. These details are pulled straight from the factory—no third-party interpretation.

Use the Picturesque Index to Locate Hydraulic Parts

Instead of flipping through 250 pages blindly, go straight to the PICTURESQUE INDEX(2) HYDRAULIC SECTION. These exploded view diagrams let you identify the exact part visually, then cross-reference the part number from the corresponding figure. For the B50-2 P(R) and B50-2 C(R), the hydraulic system is critical. One wrong seal and you’re pulling the manifold again. The index covers figures 1 through 107, organized by system.

That alone saves you hours on the job.

Interchangeability Marks: What Those Letters Mean

The interchangeability symbols (N, O, R, S, W, Z, K) are explained in the preface of this Parts Catalog. An ‘R’ means the new part swaps with the old part either way. A ‘K’ says the part is interchangeable only as a set. Ignore these marks and you might buy a camshaft that doesn’t fit your engine serial number range. The Level system shows parent-child relationships—assembly versus sub-components. Page 1 of the catalog uses these marks next to each part. Aftermarket catalogs skip this detail entirely, leaving you to guess. For a broader view of how OEM documentation fits into the Automotive Industry Overview, understand that aftermarket catalogs are often digitized from poor copies with missing marks.

Who Needs This Catalog?

If you own a Yanmar B50-2 P(R) or B50-2 C(R) compact tractor, this is the reference you keep in the shop. DIY owners can use the picturesque index to identify parts without tearing the machine apart. Professional mechanics rely on the factory part numbers to avoid returns and downtime. The 250-page count means every fastener, seal, and hydraulic line is listed with its OEM number. Beginners: don’t try to order parts for these tractors without the factory catalog. You’ll end up with a box of wrong parts.

Does this catalog include torque specifications?

No. This is a parts catalog only. Torque specs are in the service manual.

How do I read the part numbers and interchangeability codes?

Page 1 shows the layout: Ref. No., Level, Part No., Description, and columns for each engine variant. The preface explains the interchangeability marks (N, O, R, S, W, Z, K) and level designations. For example, if you see a ‘K’ mark, it means the part only works if you also replace related parts. Always check the effective machine number column to confirm your engine serial number falls within the range. This is critical for fuel injection pumps and other serial-number-specific components.

When you order parts for a Yanmar B50-2 P(R) or B50-2 C(R), having the factory parts catalog on your tablet or printed out is insurance against wasting money. Every part number has been verified by Yanmar’s engineers. Stop trusting scraped data from shady sites. Access the Factory Manual and get the real reference.

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