Part of the Kubota Parts Manuals.
This is the Kubota parts catalog for the RC40-G, RC44-G, and RC48-G rotary mower decks. It is an 8-page reference delivered as a downloadable PDF you can open on a phone, tablet, or shop computer and print whenever you need a diagram at the bench.Inside you get the parts breakdown for the deck's main assemblies: the driveline joint, the spindle and blade group, the tension pulley, and the rear wheel, along with the belt replacement procedure at the front of the book. Use it to identify the exact component you need before you order and to see how the pieces fit together.With it you can find the right part for a worn spindle bearing, a bent blade, a tired tension spring, or a driveline joint, and rebuild the deck using the correct hardware and torque figures.
What's Inside This Kubota RC40-G, RC44-G, RC48-G Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Joint | 3 | Yoke, Cross Assembly, Bolt, Nut, Pin, Shaft |
| Spindle and Blade | 4 | Spindle Holder, Blade, Spindle Shaft, Bearing, Pulley, Bolt |
| Tension Pulley | 5-6 | Tension Screw, Spring, Bearing, Bolt, Bracket |
| Rear Wheel | 7-8 | Wheel Hub, Axle, Bolt, Nut, Washer, Bracket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Outer blades bolt torque | 12.6 to 15 kgf-m (91~109 ft-lbs) | p. 1 |
| RC40-G, RC48-G | ||
| Tension screw spring length | 150 mm (5.9 in.) | p. 1 |
| RC44-G | ||
| Tension screw spring length | 135 mm (5.3 in.) | p. 1 |
Kubota RC40-G, RC44-G, RC48-G Common Problems This Manual Covers
Worn blade spindle bearings
Spindle bearings take constant load and heat, and worn ones cause noise, play, and vibration at the blade. The spindle and blade breakdown identifies the spindle holder, shaft, bearing, and pulley for replacement.
Manual Section: Spindle and Blade p. 4Bent or worn blades
Blades that hit rocks or curbs bend or dull and then cut poorly and shake the deck. The spindle and blade section lists the blade and its mounting hardware so you can order correct replacements.
Manual Section: Spindle and Blade p. 4Belt slipping from a tired tension spring
A weak or stretched tension spring lets the drive belt slip and lose blade speed. The tension pulley breakdown covers the tension screw, spring, bearing, and bracket.
Manual Section: Tension Pulley p. 5Worn universal joint cross
The driveline joint takes the drive from the tractor PTO and its cross and bearings wear over time, causing vibration and lash. The joint breakdown identifies the yoke, cross assembly, and pins.
Manual Section: Joint p. 3Rear wheel hub and axle wear
The rear gauge wheel supports deck height, and a worn hub or axle lets the deck wander and scalp. The rear wheel breakdown lists the hub, axle, and mounting hardware.
Manual Section: Rear Wheel p. 7Frequently Asked Questions
Which mower decks does this parts catalog cover?
It covers the Kubota RC40-G, RC44-G, and RC48-G rotary mower decks. It is a parts catalog used to identify and order the correct replacement components.
What does the catalog actually contain?
It breaks the deck into its main assemblies, the Joint, Spindle and Blade, Tension Pulley, and Rear Wheel, so you can locate a component and order the right part rather than guessing.
Does it give the blade bolt torque?
Yes. The belt replacement instructions list the outer blades bolt torque of 12.6 to 15 kgf-m (91 to 109 ft-lbs) so you can tighten the blades correctly during a rebuild. p. 1
How do I get the catalog after I buy it?
You download the PDF immediately after purchase, with no shipping wait. You can save a copy to your own device for offline use.
How quickly can I access this manual after buying?
Your 8-page searchable PDF downloads the moment checkout completes. Open it on a laptop, tablet, or phone, then bring it straight to the shop floor.
Can I print this manual?
Yes. Print as many copies as you like; there are no restrictions. Plenty of mechanics just print the section they need and keep it at the workbench.
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