Description

Shibaura SX21, SX24 Parts Catalog

Ordering the wrong part because you guessed at a revision letter or used a generic parts diagram costs you time and money. This Shibaura SX21, SX24 Parts Catalog is the factory document — 76 pages of OEM part numbers, interchangeability marks, and exploded views that tell you exactly which pulley, bolt, or seal fits your mower deck or engine. I’ve had to re-order parts because someone relied on an aftermarket list that skipped the revision codes. Don’t be that guy.

How to Consult the Parts List — Page 1 Essentials

The first page lays out exactly which models are covered. SX21 codes 337000–337005 with the S753 engine at 15.7 kW / 3000 rpm, and SX24 codes 337100–337105 with the S773. No mower deck parts here — those are in a separate list. The table shows the model code, engine model, spec, and applicable mower deck. If your machine isn’t in that table, you’ve got the wrong manual. Check the code plate on your unit before you order anything.

Each row in the parts list gives you nine columns: index number, part number, name, quantity, interchangeability mark, applicable machine serial numbers, description, remarks (size), and type. Page 1 also explains how to read those columns. That’s where most DIY guys trip up — they skip the column headers and assume column 4 is price. Column 4 is quantity. Use the manual as intended.

Numerical Parts Index — Finding Anything Fast

A numerical parts index lives in the back. Look up a part number and it tells you which illustration page and row to find it. No flipping through every section. This index is three pages long and covers every listed part. If you have a part number from an old service order, start here.

Need the service procedures for that engine? Pair this catalog with the Shibaura SX21/24 Workshop Manual for torque specs and assembly steps. The operator’s manual is also useful for daily maintenance intervals — get the Shibaura SX21 SX24 SXM54 SXM60 Operator’s Manual if you haven’t already.

Interchangeability Marks: A, B, D, E — What They Actually Mean

Page 2 of this catalog defines the marks. A means new and old parts are fully interchangeable — bolt-in, no drama. B means new can replace old, but old cannot replace new. D means not interchangeable — don’t try. E and F marks indicate serial number or engine filler limits. I’ve seen a tech slap a D-marked part onto a late-model SX24 because he didn’t bother reading the column. The crank bearings locked up within 50 hours. Check the mark.

Engine basics from this Wikipedia article on diesel engines might help you understand why some parts change across revisions. The column for “applicable number of machines” tells you exactly which serial numbers take A vs. B vs. D. Ignore it at your own risk.

Illustrations and Part Number Cross-Reference

The exploded drawings in this catalog are guidelines, not engineering blueprints. They show assemblies and individual pieces to help you locate the part in the real world. The actual dimensions and part numbers come from the table, not the picture. Match the index number in the illustration to the same number in the list. If the drawing shows a bolt with a 19mm head but the table says part number 12345-67890 with a 17mm head, trust the number. The drawing artist rounded things off.

For tractor owners who need similar parts, the SHIBAURA TRACTOR ST440 ST445 Parts List uses the same numbering conventions — worth having in your library if you run both mowers and tractors.

Ordering Genuine Shibaura Parts — Warranty and Safety

The manual states plainly: “Be sure to use SHIBAURA genuine parts for SHIBAURA products. Warranty does not cover when the use of parts which are not SHIBAURA service parts.” That’s factory language. Aftermarket parts might look the same, but the metallurgy and tolerances differ. On a mower deck running at 3000 rpm, a cheap spindle bearing can seize and throw the belt. I’ve pulled enough trash out of customers’ decks to know better.

Returned parts (other than wrong-ship errors) aren’t accepted. So ordering the correct number from the start saves you return shipping and restocking fees. The automotive industry overview at Automotive Industry Overview discusses supply chain issues — getting the right part on the first order matters more than ever.

Stop chasing part numbers from untrusted sources. This catalog is the same document dealers use to keep their shelves stocked correctly. It’s 76 pages, OEM-printed, and covers every bolt and bracket for SX21 and SX24 models. Access the Factory Manual and get the right part the first time.