Finding the exact part number for your Kubota L1720 Tractor Loader takes seconds with this 21-page Parts Catalog PDF. The manual provides clear exploded views and numbered lists for the entire hydraulic system, including lift and attachment cylinders, the 2-spool control valve, and the external front-mounted pump kit. Every section pairs detailed diagrams with Interchangeable, Not Interchangeable, New For Old, and Old For New cross-reference tables to prevent dead-end orders on superseded parts. Hose assemblies are specified by exact dimensions, such as 1/2-inch lines in 26-inch and 27-inch lengths, each assigned a specific part number. Stop guessing at the parts counter. Because the file is fully bookmarked by system, you can search for any component name and place an accurate order immediately.
What's Inside This Kubota L1720 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Bucket Level Indicator | 1 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Main Frame/Sub-Frames/Mounting Brackets | 2-4 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Hydraulic Tubes And Hose Assemblies | 5-6 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| 2 Spool Control Valve Decal And Hoses | 7-8 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Tractor Hydraulic Kit | 9 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Muffler Relocator | 10 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| External Hydraulic Kit Front Mounted Pump Oil Filter | 11-13 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Lift Cylinder | 14-15 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Attachment Cylinder | 16-17 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| 2 Spool Control Valve | 18-19 | Interchangeable, Not Interchangeable Ni, New For Old, Old For New |
| Hydraulic Pump | 20-21 | 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 |
Kubota L1720 Common Problems This Manual Covers
Loader hydraulic hose blown, missing replacement part number by length p. 5
Review the hydraulic tubes and hose assembly diagram on page 5. Standard loader hoses for this kit run 1/2 inch diameter in lengths of 18, 26, and 27 inches (page 6). Match your failed hose against these dimensions in the exploded view, then cross-reference with the parts number list to confirm the correct part number.
Manual Section: Hydraulic Tubes And Hose AssembliesLift cylinder rod seal leaking, missing the right seal kit part number p. 14
Consult the lift cylinder exploded view on page 14. Identify each seal component in the parts breakdown across pages 14-15, noting the item numbers. If the cylinder supply hose also needs replacement, standard loader hoses run 1/2 inch diameter (page 6). Cross-reference all item numbers against the master parts list before ordering.
Manual Section: Lift CylinderAttachment cylinder seals failed, correct replacement kit part number not in obvious location p. 16
Examine the attachment cylinder exploded view on page 16. Identify each seal component in the parts breakdown across pages 16-17, noting the item numbers. Cross-reference with the parts number list to confirm the correct part. The adjacent control valve hoses (page 8) run 3/8 inch diameter, 28 inches, if related lines need replacement too.
Manual Section: Attachment CylinderHydraulic pump leaking externally, unsure which pump component part number to order p. 20
Pull up the hydraulic pump exploded view on page 20. The full pump breakdown across pages 20-21 lists every serviceable component with part numbers. Identify the leaking part in the diagram. For external pump oil filter connections, check page 11; the supply hose there is 3/8 inch diameter by 96 inches (page 12). Cross-reference part numbers.
Manual Section: Hydraulic PumpFrequently Asked Questions
What are the replacement specifications for hydraulic quick-connect couplers?
The manual lists several hydraulic fittings with replacement specifications. For example, "FITTING 90 O-RING" (Part Number: 70050-01025) is specified as "90" on page 6. Other fittings include "FITTING" (Part Number: 70050-01104) as "1-1/16 O-RING TO 3/4 PIPE" on page 12, and "FITTING" (Part Number: 70050-01092) as "90 7/8 O-RING TO 1/2 PIPE" on page 8.
What are the replacement specifications for hydraulic hoses?
Replacement specifications for hydraulic hoses are provided with their part numbers and dimensions. For instance, "HOSE" (Part Number: 70050-01017) is specified as "1/2 X 26" on page 6, "HOSE" (Part Number: 70050-01116) as "3/8 X 96 (PRESSURE)" on page 12, and "HOSE" (Part Number: 70050-01127) as "1 X 103 (SUCTION)" also on page 12. Another "HOSE" (Part Number: 70050-01135) is listed with a specification of "72" on page 9.
How do I find the correct part number for a leaking lift cylinder seal on the L1720 loader?
This catalog has an exploded view of the lift cylinder on page 14, with the full parts breakdown running across pages 14-15. Identify each seal component in the diagram, note its item number, then cross-reference that item number against the master parts list to confirm the correct part before ordering (page 14).
Does this catalog cover the attachment cylinder seals?
Yes. The attachment cylinder has its own exploded view on page 16, with the parts breakdown spanning pages 16-17. You identify each seal component in the diagram, note the item numbers, and cross-reference them with the parts number list to confirm the correct replacement (page 16). The adjacent control valve hoses on page 8 run 3/8 inch diameter, 28 inches, if related lines also need replacing.
My loader hydraulic hose blew — what replacement hose sizes does this manual list?
The hydraulic tubes and hose assembly diagram is on page 5, with the parts listing on page 6. Standard loader hoses for this kit run 1/2 inch diameter in lengths of 18, 26, and 27 inches (page 6). Match your failed hose against these dimensions in the exploded view, then cross-reference with the parts number list to confirm the correct part number.
Can I use this catalog to order parts for an external hydraulic pump leak?
Yes. The hydraulic pump exploded view is on page 20, and the full pump breakdown across pages 20-21 lists every serviceable component with part numbers, so you can identify the leaking part in the diagram. For the external front-mounted pump oil filter connections, see page 11; that supply hose is 3/8 inch diameter by 96 inches (page 12). Cross-reference the part numbers before ordering.
Is this Kubota L1720 Parts Catalog a digital download?
Instant PDF download. You get the full 21-page searchable Parts Catalog immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print this Kubota L1720 manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Document Quality
This document is a scanned PDF with an optical character recognition (OCR) layer, allowing you to search and copy the full text. The text throughout is crisp and easy to read. All diagrams and illustrations are raster images, which are clear and have readable labels, though they will pixelate when highly magnified. The pages are clean, free from scan artifacts, stains, or skew, and there are no blank or filler pages.
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