Every operating and daily maintenance procedure Kubota wrote for the KX080-3 compact excavator sits in these 117 pages (OEM #RD819-8131-7). Thirty pages cover excavator operation: engine start sequences, TPSS pattern selection, boom swing, service port circuits, and the emergency shut-off valve. A further 25 pages lay out maintenance mapped to every interval, from the 50-hour break-in to the 3000-hour injection pump check. Also here: the full maintenance schedule, fluid capacity tables, a troubleshooting guide for engine start failures, overheating, hydraulic faults, and Kubota I.C.S. messages, plus lifting capacity charts with working range dimensions. Change front idler and track roller oil at 2000 hours; keep steel track sag between 40 and 55 mm. Sections are bookmarked, any spec is searchable by keyword, and it opens on any device, so you can get back to work.
What's Inside This Kubota KX080-3 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safe Operation | 9-21 | Before Operation, Starting of the Excavator, Safe Loading and Transport, Maintenance Safety, Danger/Warning/Caution Labels |
| Dealer Service | 23 | Excavator Serial Number, Engine Serial Number, Ordering Spare Parts |
| Technical Data | 24 | Operating Weight, Engine Power, Travel Speed, Fuel Tank Capacity, Boom Swing Angle |
| Description of Machine Parts | 25 | Arm, Bucket, Boom, Dozer Blade, Cabin, Tracks, Drive Sprocket |
| Instrument Panel and Control Elements | 26-27 | Switches (Service Port, Horn, Travel Speed, Auto Idle, Overload Warning, Working Light), Control Pedals and Levers, Lock Lever |
| Checks Before Start | 28-34 | Daily Checks (Wiper/Washer Switch, Interior Lamp, Beacon Light Switch, Overload Warning Switch, Cab Light Switch, Working Light Switch, Opening/Closing of CAB Door, Opening/Closing of Front CAB Window, Opening/Closing of Side CAB Window, Emergency Hammer) |
| Operation of the Engine | 35-43 | Starting the Engine (Display Selector Switch, Charge Lamp, Oil Lamp, Glow Lamp, LCD Display for Normal Operation, LCD Display for Warning, Warning Lamp, Fuel Supply Pump, Checkpoints after Starting the Engine) |
| Excavator Operation | 44-65 | Running-In of the New Excavator (Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours, Oil Change in the Run-in Stage, Seat Belt) |
| Transporting the Excavator on a Vehicle | 66-67 | Loading Procedure, Ramp Requirements, Securing Excavator, Towing Guidelines |
| Lifting of the Excavator | 68-69 | Safety Guidelines, Lifting Points, Cable/Strap Selection, Maximum Load Capacity |
| Maintenance | 70-99 | Maintenance Intervals |
| Other Adjustments and Replacements | 100-103 | Purging of the Fuel System, Tracks (Special Information when Using Rubber Tracks), Changing the Bucket |
| Troubleshooting | 104-107 | Engine Starting Difficulties, Overheating, Hydraulic System Issues, Drive System Deviation, KUBOTA I.C.S. Messages, Service Hour Meter Messages |
| Operation Under Cold Weather Conditions | 108 | Oil Viscosity, Battery Charge, Anti-freeze Mixing Ratio, Post-Work Cleaning |
| Long Storage | 109-110 | Cleaning, Greasing, Battery Removal, Anti-freeze, Periodic Component Replacement |
| Technical Specifications and Capacities | 111-117 | Recommended Oils (Engine, Hydraulic, Fuel), Main Dimensions, Lifting Capacity Tables, Working Range |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track adjustment grease nipple tightening torque | 98 to 108 N-m | p. 100 |
| Hydraulic hose replacement interval | Every 2 years or 4000 hours | p. 88 |
| Front idler and track roller oil change interval | every 2000 hrs | p. 74 |
| Steel tracks clearance (related to drive sprocket and idler) | 40 to 55 mm | p. 101 |
| Outer air filter element replacement interval | every 1000 hrs | p. 70 |
| Inner air filter element replacement interval | every 1000 hrs | p. 70 |
| Fuel filter cartridge replacement interval | every 500 hrs | p. 70 |
| Water separator draining interval | every 50 hrs | p. 70 |
| Engine oil filter replacement interval | every 250 hrs | p. 70 |
| Operating Weight (Rubber tracks) | 8280 kg | p. 24 |
| Engine Total Displacement | 3331 cc | p. 24 |
| Engine SAE Net Power | 49.6 kW (66.5 Hp) | p. 24 |
Kubota KX080-3 Common Problems This Manual Covers
Kubota KX080-3 hydraulic system slow, digging power drops, or hydraulic temperature warning activates p. 104
Check hydraulic oil level with boom fully retracted and dozer blade flat on ground, as described on page 78. If level is low, top up with approved fluid. Inspect cooling package screens for packed debris and clean them. Hydraulic hoses must be replaced every 4,000 hours or 2 years per the maintenance interval schedule on page 70.
Manual Section: Hydraulic System (Low Power)Engine temperature warning light enters red zone or coolant temperature alarm activates during operation p. 104
Confirm coolant level in the reservoir; total system capacity is 10.5 L per page 98. Clear mud and debris from the radiator fins and air intake screens, daily in heavy conditions. Verify alternator belt deflection is within 10 mm as noted on page 84. Shut down immediately if the temperature gauge stays in the red zone.
Manual Section: Water Temperature in Red Zone (Overheating)Tracks come off, machine drifts, or pulls hard to one side during travel p. 101
Inspect track tension first. Rubber tracks should measure 25 to 40 mm of sag at mid-span, as specified on page 101. Clear packed mud and debris from the undercarriage, which can force a track off the idler. Adjust tension at the grease nipple following the procedure in the Other Adjustments section on page 100.
Manual Section: Deviation of Drive DirectionBoom, arm, and bucket pivot points squeaking or joints stiffening during normal operation p. 70
Grease all boom, arm, bucket, and swing bearing grease points daily per the maintenance schedule on page 70. Each fitting should accept fresh grease until old grease purges from the joint. In cold weather, run the machine at low idle for 5 minutes before greasing so the grease seats properly through the bushing.
Manual Section: MaintenanceEngine won't start, runs rough, or cuts out after sitting with water in the fuel p. 104
Drain the water separator every 50 hours using the drain valve on the bowl below the pre-filter. If water is found, drain the full fuel tank before refueling with clean diesel. Replace the fuel filter cartridge every 500 hours per page 70, and purge air from the fuel system following the procedure on page 100.
Manual Section: Engine Starting DifficultiesHydraulic oil sight glass reads incorrect after cylinder work, level looks low or high p. 78
Park on level ground with boom fully retracted, arm vertical, and dozer blade flat before reading the sight glass, as specified on page 78. If level falls below the MIN mark in this position, add approved hydraulic fluid in small increments and recheck. Hydraulic oil is due for a full change every 1,000 hours per page 70.
Manual Section: MaintenanceFrequently Asked Questions
How do I reset the service light on a Kubota KX080-3?
The service light appears when the hour meter reaches a specified count-up. Carry out the required maintenance job, then reset the warning with a long push of the display selector switch.
How do I clear error codes on a Kubota KX080-3?
Maintenance-related codes, like the one shown when the hour meter reaches a specified count-up, clear once you perform the required maintenance. Afterward, reset the warning with a long push of the display selector switch.
What are the hydraulic pressure settings on a Kubota KX080-3?
Attachment ports run at a maximum pressure of 20.6 MPa (210 kgf/cm²). The same setting is listed for the Service Port Max. Flow Volume.
What is the torque spec for the Kubota KX080-3 track adjuster or undercarriage bolts?
Once the tracks have been adjusted, retighten the grease nipple to a torque of between 98 to 108 N-m.
How to reset service light on Kubota KX080-3
Once the hour meter shows a service is due, perform the necessary maintenance. Then press and hold the display selector switch to reset the service light.
What do I get after purchasing this Kubota KX080-3 manual?
It is a 117-page searchable PDF, ready to download right away. Open it on any device and pull it up on your phone while you are under the hood. No shipping, no waiting.
Can I print this Kubota KX080-3 manual?
None at all. The PDF is DRM-free, so print whatever sections you need to take out to the shop. Standard letter or A4 paper works fine.
Document Quality
This document is a scanned PDF, and an OCR layer has been applied, allowing you to search and copy the full text. The text quality is consistently crisp and easy to read on every page. All diagrams and illustrations are raster images, but their labels and details remain clear and readable. The pages are clean with no noticeable scan artifacts, stains, marks, or skewed content. There are no notable blank or filler pages in this document.
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