Part of the Kubota Parts Manuals.
This is the Kubota Parts Catalog for the LA681 front loader, a 31 page illustrated parts breakdown taken from the factory parts book. It pairs exploded diagrams with the matching part number tables so you can find the exact component you need and order it correctly.
The catalog is organized by assembly: main frame, side frame, boom, control valve and its component parts, control lever, boom and bucket cylinders, hydraulic tubes, and hydraulic hoses. Each figure shows reference numbers that link to a table listing Kubota part numbers, descriptions, quantities, and serial number ranges.
Use it to identify worn or damaged parts, confirm hardware sizes and thread specifications, and match the right piece before you buy. It is a PDF download you can view on a computer, tablet, or phone, and print any page for the parts counter or the shop bench.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Main Frame | 3-4 | Figure: Main Frame, Table: Main Frame, Frame Main LH, Label Danger 1, Hex.Bolt, Washer Spring Lock, Support Hose |
| Side Frame | 5-6 | Figure: Side Frame, Table: Side Frame, Frame Side LH, Label Danger 3, Hex.Bolt, Washer Spring Lock, Support Brace |
| Boom | 7-8 | Figure: Boom, Table: Boom, Stand LH, Pin Spring Lock, Cir-Crip External, Fitting Grease, Hex.Bolt |
| Control Valve | 9-12 | Figure: Control Valve, Table: Control Valve, Stay Valve, Hex.Bolt, Washer Spring Lock, Valve Control, Assy Adapter 1 |
| Control Valve [Component Parts] | 13-16 | Figure: Control Valve [Component Parts], Table: Control Valve [Component Parts], Valve Control, Cap Spool, Kit Detent Float, Assy Shut-Off Plug, Plate-Seal |
| Control Lever | 17-20 | Figure: Control Lever, Table: Control Lever, Lever, Bushing, Hex.Bolt, Grip Lever, Cushion Rubber, Cylinder / Hydraulic Hose |
| Cylinder (Boom) [Component Parts] | 23-24 | Figure: Cylinder [Component Parts], Table: Cylinder [Component Parts], Tube 1 Comp, Rod 1 Comp, Piston 1, Kit Seal |
| Cylinder (Bucket) [Component Parts] | 25-26 | Figure: Cylinder [Component Parts], Table: Cylinder [Component Parts], Tube 2 Comp, Rod 2 Comp, Piston 1, Plug |
| Hydraulic Tube | 27-28 | Figure: Hydraulic Tube, Table: Hydraulic Tube, Tube 1 Hydraulic, Tube 2 Hydraulic, Clamp 1, Hex.Bolt, Washer Spring Lock |
| Hydraulic Hose | 29-30 | Figure: Hydraulic Hose, Table: Hydraulic Hose, Assy Hose 4 Hyd, Nipple, Guard Hose, Coupler, Mark Orange |
| Accessories and Service Parts | 31 | Table: Accessories and Service Parts, Operator'S Manual, Workshop Manual, Flat-Rate Schedule |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Frame Hex Bolt Thread/Length (M12) | M12*1.25*80 | p. 4 |
| Main Frame Hex Bolt Thread/Length (M14) | M14*1.5*40 | p. 4 |
| Main Frame Hex Bolt Thread/Length (Imperial) | 9/16-18UNF*1-3/4 | p. 4 |
| Side Frame Hex Bolt Thread/Length (M16) | M16*1.5*50 | p. 6 |
| Boom Grease Fitting Angle | 90DEG. | p. 8 |
| Boom Grease Fitting Thread Size | 1/4-28T.T. | p. 8 |
| Boom Hex Bolt Thread/Length | 1/4-20UNC*2-1/4 | p. 8 |
| Boom Nut Thread | 1/4-20UNC | p. 8 |
| Control Lever Bushing Diameter x Length | 5/8*1.00 | p. 18 |
| Control Lever Cotter Pin Diameter x Length | 1/32*1/2 | p. 18 |
| Cylinder (Boom) Grease Fitting Thread | 1/8-27PTF | p. 24 |
| Cylinder (Boom) Nut Thread | 5/8-18UNFP | p. 24 |
