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Kubota KX91-3a2 - User Manual

Kubota KX91-3a2
164 pages
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Table of Contents

Questions and Answers

  • C
    christinadennisAug 19, 2025
    What to do if Kubota KX91-3a2 engine does not start but starter turns?
    • P
      Pamela DouglasAug 19, 2025
      If your Kubota Excavator's engine doesn't start but the starter turns when you turn the starter switch to the START position, it could be due to air or water in the fuel system. You should check the fuel system for leaks and bleed it. Also, check the water separator for water content and drain it if necessary.
  • L
    Lindsey AllenAug 21, 2025
    What to do if starter does not turn on Kubota KX91-3a2?
    • B
      Brandon JonesAug 21, 2025
      If the starter does not turn when the starter switch is turned to the START position on your Kubota Excavator, it could be due to a depleted battery or the control lever lock not being raised. You can charge the battery, jump-start the excavator or raise the control lever lock.
  • M
    Martin SanchezAug 23, 2025
    Why is the coolant temperature gauge in the 'H' zone on my Kubota KX91-3a2?
    • R
      rebeccawilsonAug 23, 2025
      If the coolant temperature gauge is in the "H" zone on your Kubota Excavator, it could be due to several reasons: * A dirty radiator, in which case you should clean the radiator. * Low coolant level, so check the coolant level and add coolant if needed. * Leaks in the cooling system, so inspect the system for leaks. * A loose V-belt, so check and adjust the V-belt tension.
  • N
    Nathan SchwartzAug 26, 2025
    Why is there a deviation in the driving direction of my Kubota KX91-3a2 Excavators?
    • A
      allenkaylaAug 26, 2025
      If you notice a deviation in the driving direction of your Kubota Excavator, it's likely due to the crawler tension being adjusted incorrectly. To resolve this, check and adjust the crawler tension as needed.
  • D
    Daniel KingAug 28, 2025
    Why does the charge message display on my Kubota Excavators?
    • J
      James LopezAug 28, 2025
      If the charge message displays on your Kubota Excavator, it may be due to a loose V-belt or a defective fuse in the alternator circuit. Check and adjust the V-belt tension and replace the fuses.
  • V
    Vanessa HernandezAug 30, 2025
    Why is there insufficient engine power in my Kubota KX91-3a2 Excavators?
    • M
      Ms. Christina Robinson MDAug 30, 2025
      If you experience insufficient engine power in your Kubota Excavator, it could be caused by a restricted air filter, a restricted fuel filter, or water in the fuel system. To address this, check and clean the air filter, check the water separator for water content and drain if necessary, and replace the fuel filter.
  • D
    Donna ReeseSep 2, 2025
    Why is the exhaust gas color very black in my Kubota Excavators?
    • F
      Frank BishopSep 2, 2025
      If the exhaust gas color is very black in your Kubota Excavator, it's likely that the air filter is restricted. You should check and clean the air filter.
  • A
    Aaron FloresSep 4, 2025
    Why are there no pilot-controlled hydraulic functions available on my Kubota KX91-3a2 Excavators?
    • A
      Alexandra RiveraSep 4, 2025
      If you have no pilot-controlled hydraulic functions available on your Kubota Excavator, it's likely due to a defective fuse in the fuse box. Replace the fuses to resolve this issue.
  • S
    scottginaSep 6, 2025
    What to do if indicator lights do not come on as expected on Kubota KX91-3a2 Excavators?
    • J
      Janet Clark MDSep 6, 2025
      If the indicator lights do not come on as expected when the starter switch is turned to the RUN position on your Kubota Excavator, it is likely due to a defective fuse. Replace the fuses to solve this problem.
  • T
    Terry JacobsSep 8, 2025
    Why is the power of hydraulic functions too low on my Kubota Excavators?
    • H
      hballSep 8, 2025
      If the power of hydraulic functions is too low or disruptive on your Kubota Excavator, it could be due to a low hydraulic oil level or a restricted suction filter. You should check the hydraulic oil level and top up if necessary, and change the hydraulic oil tank suction filter.

Summary

General Information

Foreword

Introduction to the operator's manual and its scope.

Manufacturer

Information about the excavator manufacturer, KUBOTA Baumaschinen GmbH.

Abbreviations and Symbols

Abbreviations

Lists abbreviations used in the manual.

General symbols

Explains common symbols used in the manual.

EC Declaration of Conformity

EC Declaration of Conformity

Explains the EC conformity marking and its significance.

Operating Personnel

Defines qualifications for personnel operating the excavator.

Safety Rules

Basic Safety Instructions

General safety guidelines for operating the excavator.

Responsibilities, Liability and Warranty

Outlines owner responsibilities and warranty disclaimers.

Hazards During Excavator Handling

Identifies potential hazards during excavator operation.

Safety Symbols

Explains various safety symbols used in the manual.

Approved Use

Defines the intended and permitted uses of the excavator.

Unapproved Use

Lists examples of improper and unsafe uses of the excavator.

Special Duties of the Owner

Outlines the owner's responsibilities for safe operation.

Safety Labels on the Excavator

Illustrates and explains safety labels on the excavator.

Safety Devices

Information on ensuring safety devices are operational.

Locking the Controls

Procedure for locking excavator controls for safety.

Hydraulic System Hazards and Fire Safety

Warns about hydraulic leaks and provides fire fighting instructions.

Recovery, Loading and Transport

Safety Rules for Recovery

Safety precautions for recovering the excavator.

Safety Rules for Hoisting with a Crane

Safety measures for lifting the excavator using a crane.

Safety Rules for Transport

Guidelines for safely transporting the excavator.

Recovery Procedure

Procedures and safety rules for recovering the excavator.

Hoisting with a Crane

Detailed steps for hoisting the excavator using a crane.

Transport on a Flat Bed Trailer

Instructions for loading and securing the excavator on a trailer.

Description of the Excavator

Model Overview

Introduces the different excavator models available.

Model Specifications

Detailed technical specifications for the excavators.

Identification of the Excavator

How to identify the excavator model and its data plate.

Equipment and Accessories

Details standard equipment and available accessories.

Long Arm Accessory

Information about the optional long arm accessory.

Pipe Safety Valve

Explains the function and importance of the pipe safety valve.

Assembly and Functions

Component Overview

Identifies the main components of the excavator.

Drivers Place and Controls

Describes the operator's seat, controls, and displays.

Control Lever and Pedal Functions

Explains functions of control levers, locks, pedals, and switches.

Further Cab Components

Details additional components located inside the cab.

Operation

Safety Rules for Operation

Crucial safety guidelines for operating the excavator.

Working Near Power Lines

Safety distances for working near power lines and utilities.

Initial Operation and Running-in

Setup, language, and break-in procedures for new excavators.

Pre-Operational Services

Tasks to perform before starting excavator operation.

Lubrication

General instructions for lubricating the excavator.

Drivers Seat Adjustments

Details seat adjustments for position, spring, height, and backrest.

Starting and Stopping the Engine

Step-by-step guides for starting and stopping the excavator engine.

Driving the Excavator

General safety and operational guidelines for driving.

Operating Controls

Instructions for operating boom, arm, bucket, dozer, and swivel frame.

Service Port Operation

How to use the service port and adjust flow rates.

Placing Out of Operation

Procedures for shutting down and securing the excavator.

Cab Operation Features

Instructions for wipers, lights, heater, and doors.

Cold Weather Operation

Guidelines for operating the excavator in cold weather.

Jump-Starting the Excavator

Step-by-step guide to jump-starting the excavator battery.

Emergency Stop Functions

Emergency procedures for stopping the engine or lowering the boom.

Refueling and Fuel System Bleeding

Procedures for refueling and bleeding air from the fuel system.

Replacing Fuses

Instructions for replacing blown fuses.

Replacing the Bucket

Procedure for replacing the excavator bucket, requiring two people.

Anti-theft System

Information on the excavator's anti-theft system and key types.

Registering Keys

Step-by-step guide to registering new keys.

Troubleshooting

Safety Rules for Troubleshooting

Safety guidelines to follow during troubleshooting.

Pre-Operational Service Troubleshooting

Common issues and solutions before starting operation.

Operation Troubleshooting

Common operational issues and their remedies.

Display Indication Troubleshooting

Interpreting and resolving issues indicated on the display.

Maintenance

Safety Rules for Maintenance

Essential safety guidelines before performing maintenance.

Personnel Requirements

Specifies required qualifications for maintenance tasks.

General Maintenance Charts

Maintenance schedules based on operating hours.

Cleaning the Excavator

Procedures for cleaning the excavator safely.

Coolant System Maintenance

Procedures for refilling coolant and cleaning the radiator.

V-Belt and Coolant Hose Checks

Checking V-belt tension and coolant hose condition.

Engine Oil and Filter Service

Procedures for changing engine oil and replacing the oil filter.

Coolant Replacement

Step-by-step instructions for replacing the coolant.

Air Filter Check and Cleaning

How to check and clean the air filter elements.

Fuel System Maintenance

Procedures for replacing fuel filter and cleaning water separator.

Hydraulic System Filters

Replacing return and suction filters in the hydraulic oil tank.

Hydraulic Oil Draining and Filling

Procedures for draining and refilling hydraulic oil.

Battery Service

General guidelines for battery maintenance.

Charging the Battery

Step-by-step guide to safely charging the excavator battery.

Battery Installation and Removal

Procedures for removing and installing the excavator battery.

Lubrication Tasks

Lubrication procedures for swivel gear and pitch bearing.

Crawler Tension Adjustment

How to check, tighten, and loosen crawler tension.

Drive Unit Oil Replacement

Procedure for changing the oil in the drive units.

Cable and Linkage Checks

Checking electric cables and greasing pilot valve linkage.

Bolted Joint Torque Specifications

Torque specifications for screws, clamps, and hoses.

Recommended Lubricants

Table listing recommended lubricants for various components.

Excavator Repairs and Spare Parts

Guidelines for repairs and information on ordering spare parts.

Safety Inspection

Safety Inspection Procedures

Outlines procedures and requirements for safety inspections.

Taking Out of Service and Storage

Safety Rules for Storage

Safety precautions for storing the excavator.

Storage Conditions

Specifies ideal conditions for storing the excavator.

Measures Before and During Storage

Preparatory steps and actions while the excavator is out of service.

Start-up After Service

Procedures for starting the excavator after storage.

Lifting Capacity of the Excavator

Lifting Capacity Overview

Explains how lifting capacity is determined and measured.

Lifting Capacity Tables

Provides lifting capacities for various configurations and loads.

EC Declaration of Conformity

EC Declaration of Conformity

States that declarations of conformity follow.

EC Declaration for KX91-3α2

Formal EC declaration for model KX91-3α2.

EC Declaration for KX101-3α2

Formal EC declaration for model KX101-3α2.

EC Declaration for U35-3α2

Formal EC declaration for model U35-3α2.

Kubota KX91-3a2 Specifications

General IconGeneral
BrandKubota
ModelKX91-3a2
CategoryExcavators
LanguageEnglish

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