This Kubota L1720 Parts Catalog is the factory illustrated parts reference for the L1720 tractor loader, serial prefix 51604. It lays out the loader's hydraulic system as exploded diagrams paired with Kubota part numbers, quantities, and interchangeability notes, so you can identify the exact component before you order.
Coverage centers on the front-end loader hydraulics: hydraulic tubes and hose assemblies, the 2 spool control valve and its decal and hoses, the tractor hydraulic kit, muffler relocator, the external hydraulic kit with front mounted pump and oil filter, lift and attachment cylinders, and the hydraulic pump.
Use it to cross-check hose lengths and fittings, confirm a superseded part, or build an accurate order for a leak repair or cylinder rebuild without guesswork.
Complete the set for your L1720
- Operator Manual: Kubota L1720 Loader Operator Manual
Other edition of this manual
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Bucket Level Indicator | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Main Frame/Sub-Frames/Mounting Brackets | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Hydraulic Tubes and Hose Assemblies | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Spool Control Valve Decal and Hoses | 2 Spool Control Valve Decal and Hoses, Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Tractor Hydraulic Kit | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Muffler Relocator | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| External Hydraulic Kit Front Mounted Pump Oil Filter | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Lift Cylinder | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Attachment Cylinder | Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Spool Control Valve | 2 Spool Control Valve, Interchangeable, Not Interchangeable Ni, New for Old, Old for New | |
| Hydraulic Pump | Interchangeable, Not Interchangeable Ni, New for Old, Old for New |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| HOSE length | 26 inches | p. 6 |
| HOSE diameter | 1/2 inch | p. 6 |
| FITTING 90 O-RING angle | 90 degrees | p. 6 |
| FITTING angle | 90 degrees | p. 9 |








