Part of the Kubota Parts Manuals.
This Kubota RCK54-15BX parts catalog is the factory illustrated parts list for the RCK54-15BX mid-mount mower deck used on the BX-series compact tractor. It provides exploded diagrams and Kubota part numbers for the universal joint, bevel gear case, input shaft and center pulley, pulley holders and blades, side pulley, tension pulley, mower deck, gauge wheels, rear wheels, discharge cover, and mower linkage.Use it to match a worn component to its exact part number, verify quantities, and read the interchangeability and serial-number notes before you order. Each section shows a numbered drawing beside its parts table, so tracing a part from the diagram to the order sheet is straightforward.This is a parts reference rather than a repair-procedure manual. It is aimed at owners and mechanics servicing the deck drivetrain, blade spindles, belt drive, and wheel and linkage wear points.
What's Inside This Kubota RCK54-15BX Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Universal Joint | 4-5 | Assy Joint Universal, Yoke Quick, Yoke PTO, Shaft Joint, Assy Joint Cross, Nipple Grease |
| Bevel Gear Case | 6-7 | Stay Case LH, Nipple Grease, Shim Adjust, O Ring, Case Bevel Gear, Plug Breather |
| Input Shaft/Center Pulley | 8-9 | Shaft Pinion, Kit Gear Bevel, Shim, Bearing Ball, Seal Oil, Pulley Center |
| Pulley Holder/Blade | 10-11 | Holder Pulley Center, O Ring, Bearing Ball, Oil Seal Upper, Boss Spline, Blade, Kit Blade |
| Side Pulley/Blade | 12-13 | Holder Pulley, Bearing Ball, Shaft Side Blade, Blade, Oil Seal Upper, Boss Side Pully, Kit Blade |
| Tension Pulley | 14-15 | Belt Poly, Arm Tension, Bushing Tension, Collar Tension, Pulley Tension, Seal Bearing, Spring Tension |
| Mower Deck | 16-17 | Assy Mower Deck, Label Caution, Label Danger, Cover Left, Plate Rubber, Bolt Short Squ.Neck |
| Front Gauge Wheel | 18-19 | Assy Gauge Wheel, Gauge Wheel, Bolt Shoulder, Pin Gauge Wheel, Roller Anti-Scalp, Bolt Gauge, Nut Lock |
| Rear Wheel | 20-21 | Assy Gauge Wheel, Gauge Wheel, Bolt Shoulder, Pin Gauge Wheel, Pin Clevis, Ring Snap |
| Discharge Cover | 22-23 | Cover Discharge, Pin Discharge, Spring Discharge, Pin Spring, Bolt, Washer Spring |
| Mower Linkage | 24-25 | Lever Link, Pin Front, Spring Pin Front, Pin Spring, Link Front, Washer Spring Lock |
| Mower Label [English] | 26-27 | Label Caution, Label Danger 1, Label Danger 2, Plate Name, Label Anti-Scalp |
| Mower Label [French] | 28-29 | Label Caution Ca, Label Danger 1 Ca, Label Danger 2 Ca, Plate Name, Label Anti-Scalp |
| Accessories and Service Parts | 30-31 | Operator's Manual, Operator's Manual Ca |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Shim thickness | 0.2mm | p. 9 |
| Kit Gear Bevel Teeth Count | 16-19T | p. 9 |
| Nipple Grease Weight | 0.01 kgf | p. 5 |
Kubota RCK54-15BX Common Problems This Manual Covers
Grinding or rattling when engaged
Worn bearings or a failing input shaft assembly cause grinding and heavy vibration under load. The Input Shaft/Center Pulley section lists the pinion shaft, bearings, seals, and shims for that gearbox stack.
Manual Section: Input Shaft/Center Pulley p. 8Blades will not turn under load
A slipping or damaged universal joint or drive shaft can stop the blades or make the deck stall. The Universal Joint section identifies the yokes, cross assemblies, and snap rings to inspect.
Manual Section: Universal Joint p. 4Harsh startup or gearbox noise
Noise on engagement often points to the bevel gear case, its gears, bearings, or shims. The Bevel Gear Case parts list shows the internal components and adjustment shims for a rebuild.
Manual Section: Bevel Gear Case p. 6Belt slips, squeals, or burns
Incorrect tension, a worn belt, or a binding idler causes slipping and squealing after short use. The Tension Pulley section covers the poly belt, tension arm, pulley, and spring.
Manual Section: Tension Pulley p. 14Uneven cut or one side low
Worn gauge wheels, wrong deck level, or a bent spindle produce a stepped or uneven cut. The Front Gauge Wheel section lists the gauge wheel, roller, pins, and hardware used to set deck height.
Manual Section: Front Gauge Wheel p. 18Clogging or poor discharge
Material buildup under the deck often follows a worn discharge cover or damaged spring and pins. The Discharge Cover section lists the cover, pins, springs, and fasteners for that assembly.
Manual Section: Discharge Cover p. 22Frequently Asked Questions
Which mower does this catalog cover?
It is the parts catalog for the Kubota RCK54-15BX mid-mount mower deck. It covers the deck assembly and its components, not the tractor.
Does it show exploded diagrams and part numbers?
Yes. Each assembly pairs a numbered exploded drawing with a parts table listing reference numbers, Kubota part numbers, quantities, and interchangeability notes so you can order the correct part.
Where are the gearbox and drive parts listed?
The Bevel Gear Case section covers the gearbox, and the Input Shaft/Center Pulley section covers the pinion shaft, gears, bearings, and shims. Start with the Bevel Gear Case section. p. 6
Which sections cover the blades?
The Pulley Holder/Blade section lists the center blade and holder, and the Side Pulley/Blade section covers the side blade assembly. Use the Pulley Holder/Blade section first. p. 10
What do I get after purchasing this Kubota RCK54-15BX manual?
A 31-page searchable PDF, ready to download the moment you buy. It opens on any device, so you can pull it up on your phone right under the hood. No shipping, no waiting.
Is this Kubota RCK54-15BX Parts Catalog printable?
Yes. Print as many copies as you want; there are no restrictions. Plenty of mechanics print just the section they need and carry it to the shop floor.
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