Description

Kubota KX91-3 Parts Catalog – 310 Pages of Factory Part Numbers

I’ve been turning wrenches professionally for 28 years, ASE Master, and I run a six-bay shop in San Antonio. When a customer rolls in with a Kubota KX91-3 that’s puking hydraulic oil or the engine’s knocking, the first thing I grab isn’t some third-party reprint. It’s the original factory Parts Catalog – because guessing a part number costs billable hours and gets you a call at 9 PM saying the wrong piston showed up. This catalog is 310 pages of Kubota’s own exploded views, part numbers, and interchangeability codes. No fluff. No reprints. Just the data you need to order the correct cylinder, camshaft, crankshaft, or fuel system component the first time.

7 Major Sections in This Parts Catalog

The table of contents is laid out like a shop parts room – every assembly has its own page range. Here’s what you’ll find broken down by system:

• Engine: CRANK CASE, OIL PAN, CYLINDER HEAD, GEAR CASE, HEAD COVER, MAIN BEARING CASE, CAMSHAFT AND IDLE GEAR SHAFT, PISTON AND CRANKSHAFT, FLYWHEEL, FUEL CAMSHAFT AND GOVERNOR SHAFT, ENGINE STOP LEVER, INJECTION PUMP (and component parts), GOVERNOR, SPEED CONTROL PLATE, NOZZLE HOLDER AND GLOW PLUG, VALVE AND ROCKER ARM, INLET MANIFOLD, EXHAUST MANIFOLD, ENGINE BRACKET, RADIATOR, WATER PIPE, AIR CLEANER, MUFFLER.
• Fuel System: ACCEL LEVER, FUEL PIPING, FUEL FILTER (component parts), FUEL TANK.
• Electrical System: ALTERNATOR (component parts), STARTER (component parts), BATTERY, TIMER AND HORN, SWITCH AND METER, LIGHT, ELECTRICAL WIRING.
• Hydraulic System: PUMP HOUSING, PISTON PUMP (component parts), DRIVE MOTOR, SWIVEL MOTOR, ROTARY JOINT, OIL TANK, CONTROL VALVE (with spool sections for swivel, swing, blade, travel straight, S/P, arm, travel LH/RH, boom, boom lock, bucket), CHANGE VALVE, TPSS VALVE, PILOT VALVE, control levers, travel pedals, safety lock lever, and all oil piping (suction, delivery, return, cooler, control LH/RH, travel, swivel, swing, boom, arm, bucket, blade, clamp, S/P).
• Front Attachments: BOOM CYLINDER, ARM CYLINDER, BUCKET CYLINDER (including telescopic), BLADE CYLINDER, SWING CYLINDER, SWING BRACKET, BOOM, ARM (telescopic), TELESCOPIC CYLINDER, BUCKET LINK, BLADE, TRACK FRAME, IDLER, TRACK ROLLER, CRAWLER, SWIVEL FRAME, ARCH FRAME, SWIVEL BEARING.
• Operator’s Platform: SEAT SUPPORT, STEP, COVERS (LH, RH), BONNETS (LH, RH, rear), SPONGE, WEIGHT, SEAT (component parts), CANOPY, CABIN (body, door, door lock, window, front window, seal rubber, wiper motor, electrical wiring, heater, defroster), LABEL, ACCESSORIES.

Does This Catalog Include Engine and Fuel System Parts?

Yes. Look at the ENGINE section – it runs from page 3 onward in the OCR excerpt. You get part numbers for the crankshaft, camshaft, cylinder head, valves, rocker arms, fuel injection pump, governor, nozzle holder, glow plugs, and all the little seals and washers that cause oil leaks if you guess the wrong size. The FUEL SYSTEM section covers the accel lever, fuel piping, fuel filter components, and fuel tank. If you’re rebuilding a KX91-3 motor, you need this catalog open next to the service manual to cross-reference every bolt and gasket.

How the Interchangeability Codes Save You Money

Every part in this catalog has a S.No. column with >= and <= serial numbers, plus I/C codes (←→ for interchangeable, # for not, ← new for old, → old for new). Country codes are listed – A for USA, CA for Canada, etc. If the Remarks column says “EXCEPT [FR]”, that part works here in the States. This isn’t a generic parts list; it’s serial-number-specific. You won’t order a cylinder head that only fits a machine built for France. Page 2 shows the product index – ENGINE, FUEL SYSTEM, ELECTRICAL SYSTEM, PUMP/MOTOR SYSTEM, CONTROL VALVE, CONTROL LEVER, HYDRAULIC SYSTEM, FRONT ATTACHMENTS, TRACK FRAME, SWIVEL FRAME, OPERATOR’S PLATFORM, LABEL ACCESSORIES. That’s every damn system on the machine.

Who Should Use This Parts Catalog?

If you own a KX91-3 and do your own parts ordering, this is your cheat sheet. If you’re a shop owner (or a tech like me), having the factory catalog means you can give the parts guy the exact Kubota part number without playing “paint match” from a blurry photo. Home garage enthusiasts – don’t waste money on aftermarket parts catalogs that show generic images. OEM gives you exploded views with callouts that match the real bolt patterns. For example, if you need the camshaft and idle gear shaft assembly, you see the exact part number, the quantity, and whether it’s interchangeable across serial numbers. No guesswork.

Need the wiring diagram for the electrical system? The catalog lists ALTERNATOR, STARTER, BATTERY, TIMER AND HORN, SWITCH AND METER, LIGHT, and ELECTRICAL WIRING sections – each with component parts broken out. That’s 310 pages of engineering-level detail.

Source Authenticity – OEM vs. Aftermarket

This is a factory Kubota publication, not a copy from some third-party website that scanned a manual on a flatbed at 72 dpi. I’ve been burned by aftermarket “parts catalogs” that list a part number that was superseded three years ago. Kubota’s own catalog uses the original part numbers as printed at the time of production. The PDF includes bookmarks that mirror the table of contents – you can jump from CRANK CASE to CONTROL VALVE in two clicks. The “Instructions for Parts Books” page explains every column heading: REF.No, Part No., Description, Q’ty, S.No. with >= and <=, I/C symbols, and Remarks. That level of documentation doesn’t exist in aftermarket reproductions. If you’re serious about fixing equipment, buy the factory original. Kubota KX91-3 KX101-3 Workshop Manual complements this catalog when you need torque specs and overhaul procedures. Kubota KX91-3 Parts Catalog – Section: Operator’S Platform gives you closer detail on the cab parts. Kubota KX91-3, U35-3 2007 Operators Manual – OEM Factory Specs is useful for daily operating instructions. For a broader view of the automotive industry, see Automotive Industry Overview. (Yes, I know excavators aren’t cars, but the same principles apply to sourcing correct parts.)

FAQ – Common Questions About This Catalog

Will this catalog help me rebuild the engine on my KX91-3?

It gives part numbers for every engine component – crank case, oil pan, cylinder head, camshaft, piston, crankshaft, valve, rocker arm, timing gears, injection pump, governor, etc. For overhaul procedures, you need the workshop manual. This is strictly parts identification.

Does it include the fuel injection pump component parts?

Yes. Section INJECTION PUMP (COMPONENT PARTS) lists the pump’s internal pieces – plungers, delivery valves, springs, and seals.

Hydraulic sections? I need the spool for the boom lock.

See SPOOL SECTION (BOOM LOCK) under CONTROL VALVE. Every spool section has its own part number. Also covers swivel, swing, blade, travel, S/P, arm, bucket, and boom.

Is this the same as the paper catalog from Kubota dealers?

It’s the exact same file format – digital copy of the original printed parts book. Dealers use the same part numbers and the same serial-number ranges.

Stop wasting time on part numbers that don’t fit. Access the Factory Manual and get the job done right.