Description

BISO SRX Parts Catalog – Factory Breakdown for Your Straw Chopper

Ever order a part for your BISO SRX straw chopper, wait three days, and then find out it doesn’t fit because you missed a serial number split? I’ve seen that happen more times than I care to count. A guy brings in a flail drum that’s off by half an inch, swearing the aftermarket list said it was the right one. That’s why I keep a factory parts catalog on the rack. The BISO SRX Parts Catalog is 91 pages of factory part numbers, exploded views, and serial-break notes that save you that kind of headache. If you’re rebuilding a chopper or just replacing a worn knife, this is the document that tells you exactly which sub-assembly fits your machine. No aftermarket guesswork.

BISO SRX Parts Catalog – The Complete Parts Breakdown

Automotive Industry Overview gets referenced a lot for general knowledge, but when you need specific part numbers for a BISO SRX chopper, you need the real thing. This catalog opens with an index on page 1 under “TOOLS AND ACCESSORIES – CHOPPER.” From there it breaks into sections like KNIVES (4U.36.1), V-BELT (4U.36.2), and then the entire BISO-STRAW CHOPPER assembly groups: basis frame, flail drum with bearing, distributor box, regulation electric, mounting frame, deflector sheets, guards hood cross-struts, layshaft supports, clutch assemblies, straw warning system, and electrical equipment. Each section is keyed to a part-number prefix so you can jump straight to the right page.

Why a Factory Parts Catalog Beats Aftermarket Lists

Aftermarket parts catalogs are often reprints of reprints with blurry images and missing revision levels. This one is the real factory document from BISO. It includes serial-number breaks like “-Y 05147” and “+Y 05148” for the KPAB-straw chopper sections. If your machine falls before that break, you order the KPAB-STRAW CHOPPER BASIS FRAME -Y 05147. After the break, you need the +Y 05148 frame. Miss that split and you’ll be grinding mounting holes or sending parts back. That’s the difference between a factory catalog and a generic list.

3 Critical Assembly Groups for the BISO SRX Chopper

Three groups you’ll hit most often:
1. Flail Drum with Bearing (4U.36.52) – This is the heart of the chopper. The catalog shows the drum assembly with bearing part numbers and quantities. If you’re rebuilding one, cross-check the bearing numbers against the flail arrangement.
2. Distributor Box (4U.36.54) and Electric Regulation (4U.36.55) – The distributor box routes chopped material. The electric regulation version is listed separately. Make sure your machine has the electric actuator before ordering that section.
3. Vee Belt Clutch (4U.36.67 for +7071 machines) – The V-belt clutch conversion kits (4U.36.70 through 4U.36.72) are also listed if you’re updating older belt tension setups. Match the kit number to your chassis serial.

Using the Parts Index to Find the Correct Flail Drum

Go to the index on page 1. Find “BISO-STRAW CHOPPER FLAIL DRUM WITH BEARING – 4U.36.52.” That section gives you the exploded view with all fasteners, bearings, and the drum itself. Ordering a replacement? Look up the part number from that page, then call your dealer. If you have a KPAB variant, the catalog also includes “KPAB-STRAW CHOPPER BASIS FRAME FOR TYPE SRX ONLY” (4U.36.92) and the corresponding distributor box (4U.36.93) – those are SRX-specific. Double-check the serial break note: some KPAB frames are divided at Y 05147.

KPAB-Straw Chopper Sections: Serial Number Breaks Explained

The KPAB sections start at 4U.36.77. Notice the “-Y 05147” and “+Y 05148” in the basis frame and distributor box entries. The catalog treats pre- and post-break machines as separate assemblies. If your SRX straddles that break, you need to know which side you’re on. The mounting frame section (4U.36.82) and tension roller (4U.36.83) also have serial splits. Same for the layshaft supports (4U.36.88 and 4U.36.89). The catalog gives you both options on adjacent lines. Don’t assume they’re interchangeable.

That’s the kind of detail you get from a factory document. I’ve seen aftermarket catalogs lump all KPAB frames together. That’s how you end up ordering a distributor box that doesn’t bolt up to your mounting frame. The BISO SRX Parts Catalog prevents that.

FAQ

How many pages does the BISO SRX Parts Catalog have?

91 pages.

Does this catalog include repair procedures or torque specs?

It is a parts catalog, not a service manual. It lists part numbers, assembly breakdowns, and serial-number splits. You won’t find torque values or step-by-step overhaul instructions here. For that, you need the OEM service manual for your chopper.

Can I use this catalog to order parts for a KPAB straw chopper built before 1995?

The catalog includes KPAB sections with serial-number breaks. For example, the KPAB-Straw Chopper Basis Frame is listed as -Y 05147 and +Y 05148. If your machine’s serial number falls below Y 05147, you order the -Y version; above that, the +Y version. The same applies to distributor boxes, mounting frames, and layshaft supports. You’ll need your machine’s chassis serial number to confirm which break applies. The catalog gives you both options on separate lines, so you can match your machine exactly.

Is this a PDF file or a printed book?

It is a digital PDF file available for access from AutoRepairManuals. You can print it or view it on a tablet.

If you’re tired of ordering wrong parts or relying on blurry aftermarket scans, get the real document. Access the Factory Manual from AutoRepairManuals and keep the BISO SRX Parts Catalog on your workbench. Your chopper will thank you—and so will your wallet.

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