Kubota Z723 User Manual (English)

Questions and Answers:

J
john17Aug 22, 2025
How to fix an uneven cut with my Kubota Z723?
- M
  Morgan WolfAug 22, 2025
  If your Kubota Lawn Mower is not cutting evenly, several factors could be responsible. The mower deck might not be level, so level the mower deck. You might be moving too fast, so slow down. Dull, worn, or damaged blades can also cause an uneven cut, so sharpen or replace the blades. Check for low tire inflation and add air to correct pressure. Ensure the anti-scalp rollers are adjusted correctly, and verify that both tire pressures are set to the correct pressure.
X
xmitchellAug 25, 2025
Why is my Kubota Z723 Lawn Mower engine running rough?
- M
  Madison MayAug 25, 2025
  If your Kubota Lawn Mower engine is running roughly, it could be due to a defective spark plug (adjust the spark plug gap or replace it). Other potential causes include a defective spark plug wire, carburetion problems, or a defective ignition coil, all of which require attention from your Kubota dealer. Additionally, check if the choke is adjusted incorrectly (adjust choke cable), if the fuel hose or fuel filter is clogged or damaged (clean or replace fuel lines, and see your Kubota dealer), if the fuel is improper or stale (replace fuel and the fuel filter), or if the air cleaner is clogged (clean or replace the air cleaner).
A
Austin SolisAug 26, 2025
Why does the starter not function on my Kubota Lawn Mower?
- C
  Christine SanchezAug 27, 2025
  If your Kubota Lawn Mower's starter does not function, it could be due to an overused battery (charge battery sufficiently), a poor terminal connection (clean the terminal and tighten securely), or an expired battery life (replace battery).
M
Melissa SosaAug 27, 2025
Why does the blade not rotate on my Kubota Z723 Lawn Mower?
- M
  Mary WalkerAug 27, 2025
  If the blade on your Kubota Lawn Mower does not rotate, it could be due to a malfunctioning PTO system, in which case you should see your Kubota Dealer. If the PTO system is normal, the mower belt might be broken, so replace it.
J
Joel RiceAug 29, 2025
Why are the exhaust fumes from my Kubota Z723 Lawn Mower colored black, dark, or gray?
- S
  Steven CarterAug 29, 2025
  If the exhaust fumes from your Kubota Lawn Mower are black, dark, or gray, it could be due to several reasons. You might be overloading the mower, so try reducing the load. It could also be caused by using low-grade fuel, so switch to the specified fuel. A clogged fuel filter or air cleaner can also cause this issue, so replace the fuel filter and clean or replace the air cleaner element. Finally, check that the choke is fully opened.
J
Jon RiveraAug 31, 2025
Why is my Kubota Z723 engine overheating?
- P
  Peter GarciaAug 31, 2025
  If your Kubota Lawn Mower engine is overheating, it could be due to several reasons. The engine might be overloaded, so try lowering the speed or reducing the load. Insufficient engine oil can also cause overheating, so replenish the engine oil. Dirty engine air intake screens and cooling fins can restrict airflow, so clean them. A plugged air cleaner element can also lead to overheating, so clean or replace it. Make sure the engine speed isn't too low by operating at the "FAST" speed, and ensure the operating ground speed isn't too fast by operating the machine at a slower ground speed.
B
Brandon SheltonSep 2, 2025
Why is my Kubota Z723 Lawn Mower engine knocking?
- M
  Mr. Jason McintyreSep 2, 2025
  If your Kubota Lawn Mower engine is knocking, it might be due to stale or low octane fuel, so use the specified fuel. The engine could also be overloaded, so lower the ground speed or reduce the load. Additionally, the engine speed might be too low, so operate at the "FAST" speed.
J
justinhaynesSep 4, 2025
What to do if my Kubota Z723 engine stops suddenly?
- T
  Timothy NashSep 4, 2025
  If your Kubota Lawn Mower engine stops suddenly, it's likely due to insufficient fuel. Refuel, and check both the fuel valve and carburetor fuel valve positions.
S
stevenramirezSep 5, 2025
Why are the exhaust fumes from my Kubota Lawn Mower colored white or blue?
- S
  Shannon GraySep 5, 2025
  If the exhaust fumes from your Kubota Lawn Mower are white or blue, it could indicate excessive engine oil. Reduce the oil level to the specified amount. It may also be caused by a worn or stuck piston ring, in which case you should see your Kubota dealer.
S
Samuel BooneSep 7, 2025
Why does my Kubota Lawn Mower have insufficient engine power?
- A
  Amber GarciaSep 7, 2025
  If your Kubota Lawn Mower has insufficient engine power, check the fuel system for insufficient or dirty fuel. Also, a clogged fuel filter or air cleaner can cause this, so replace the fuel filter and clean or replace the air cleaner. A defective spark plug can also be the culprit; adjust the spark plug gap or replace it.

Kubota Z723 Specifications

General

Cylinders	2
Displacement	726 cc
Fuel Type	Gasoline
Deck Type	Fabricated
Transmission Type	Hydrostatic
Drive Type	2WD
Cutting Height	1.5 - 5 inches
Turning Radius	0 inches
Tire Size Rear	24x12-12

Summary

ABBREVIATION LIST

UNIVERSAL SYMBOLS

Symbol Definitions

Displays universal symbols and their meanings for machine operation.

SAFETY AND WARNINGS

California Proposition 65 Warning

Warning about chemicals known to cause cancer or birth defects.

FOREWORD

SAFETY FIRST

Hazard Level Definitions

Explains DANGER, WARNING, CAUTION, IMPORTANT, and NOTE levels.

SAFE OPERATION

Before Operating Precautions

Essential safety guidelines to follow before operating the machine.

OPERATING PROCEDURES

Starting and Working Safely

Guidelines for starting the engine and safe mowing practices.

Child Safety Precautions

Precautions to prevent accidents involving children during operation.

SAFE OPERATION (Slopes and Stopping)

Operating on Slopes

Procedures and warnings for operating the machine on sloped terrain.

Stopping and Transporting

Procedures for safely stopping and transporting the machine.

SAFE OPERATION (Fuel, Battery, Storage)

Fuel, Battery, and Storage Safety

Precautions for handling fuel, battery, and storing the machine.

DANGER, WARNING, AND CAUTION LABELS

General and ROPS Safety Labels

Identification of general and ROPS-related safety labels.

DANGER, WARNING, AND CAUTION LABELS (Rollover)

Rollover Safety Labels

Labels specific to preventing injury or death from rollovers.

DANGER, WARNING, AND CAUTION LABELS (Rollover and Fuel)

Rollover and Fuel Leak Labels

Labels concerning rollover hazards and fuel leaks.

DANGER, WARNING, AND CAUTION LABELS (Battery)

Battery Safety Labels

Labels detailing battery hazards and safety information.

LABEL CARE AND MAINTENANCE

SERVICING OF MACHINE

Recording Machine Information

Location and recording of serial numbers and dealer information.

Warranty and Scrapping Information

Overview of warranty coverage and machine disposal.

SPECIFICATIONS

IMPLEMENT LIMITATIONS

INSTRUMENT PANEL AND CONTROLS

Control Panel Components Overview

Identification and location of all controls and instruments on the panel.

MOWER DECK COMPONENTS

Anti-scalp Roller Identification

Identification of the anti-scalp roller on the mower deck.

MOWER MOUNTING

Mounting the Mower Deck

Step-by-step guide for attaching the mower deck to the machine.

MOWER MOUNTING AND ADJUSTMENT

Adjusting the Mower Deck

Instructions for adjusting the mower deck after mounting.

MOWER MOUNTING AND DISMOUNTING

Dismounting the Mower Deck

Step-by-step guide for removing the mower deck from the machine.

OPERATING THE ENGINE

Starting the Engine and Safety

Detailed procedure for starting the engine safely and mounting precautions.

OPERATING THE ENGINE (Controls)

Key Switch and Throttle/Choke Operation

How to use the key switch, throttle, and choke levers.

OPERATING THE ENGINE (Checks)

Gauges and Daily Checks

How to read gauges and perform daily operational checks.

OPERATING THE ENGINE (Starting Conditions)

Cold Weather Starting and Jump Starting

Procedures for starting in cold weather and jump starting a battery.

OPERATING THE ENGINE (Stopping)

Stopping the Engine

Steps to safely shut down the engine.

OPERATING THE MACHINE (Break-in)

New Machine Break-in Procedures

Procedures for breaking in a new machine and its components.

OPERATING THE MACHINE (ROPS Operation)

Operating and Folding the ROPS

Instructions for operating and folding the Roll-Over Protective Structure.

OPERATING THE MACHINE (ROPS and Seat)

Raising ROPS and Seat Adjustment

Procedures for raising ROPS and adjusting the operator's seat.

OPERATING THE MACHINE (Operator Comfort)

Seat and Armrest Adjustments

Specific adjustments for operator seat fore-aft, armrest, and seat belt usage.

OPERATING THE MACHINE (Implement Control)

Mower Lift Pedal and Carry Position

How to use the mower lift pedal and secure the deck in carry position.

OPERATING THE MACHINE (Driving Controls)

Throttle, Parking Brake, and Motion Controls

Operation of throttle, parking brake, and motion control levers.

OPERATING THE MACHINE (Motion Control Details)

Motion Control Lever Usage

Detailed usage of motion control levers for steering and speed.

OPERATING THE MACHINE (Stopping)

Stopping the Machine Procedures

Steps to safely stop the machine.

OPERATING THE MACHINE (Parking and Transport)

Parking and Transporting Guidelines

Procedures for safely parking and transporting the machine.

OPERATING THE MACHINE (Transaxle)

Hydrostatic Transaxle Bypass Lever

Operation and safety for the transaxle bypass lever.

OPERATING THE MOWER

Mowing Best Practices and Cutting Height

Tips for optimal mowing and how to adjust cutting height.

OPERATING THE MOWER (Deck Adjustment)

Anti-scalp Roller Adjustment

Adjusting anti-scalp rollers for proper deck height.

OPERATING THE MOWER (Roller Settings)

Anti-scalp Roller Setting Chart

Recommended settings for anti-scalp rollers based on cutting height.

OPERATING THE MOWER (Starting)

PTO Switch and Starting Procedure

How to use the PTO switch and start the mower.

TIRES AND WHEELS

Tire and Wheel Safety

Warnings and procedures for tire and wheel maintenance and inflation.

TIRES AND WHEELS (Front Wheels)

Front Caster Wheel Removal/Installation

Step-by-step guide for front caster wheel maintenance.

MAINTENANCE SCHEDULE

Service Intervals Chart

Schedule of recommended maintenance tasks based on operating hours.

LUBRICANTS AND FUEL

PERIODIC SERVICE (Access and Seat)

Opening Step and Raising Seat

Procedures for accessing the machine and adjusting the operator's seat.

PERIODIC SERVICE (Daily Checks)

Daily Check Procedures Checklist

A checklist of items to inspect before operating the machine.

PERIODIC SERVICE (Fluid Level Checks)

Engine Oil and Fuel Level Checks

How to check and maintain engine oil and fuel levels.

PERIODIC SERVICE (Air Intake System)

Air Intake Screen Cleaning

Procedure for cleaning the air intake screen to prevent overheating.

PERIODIC SERVICE (Tire Pressure and Transaxle Fluid)

Tire Pressure and Transaxle Fluid Checks

How to check tire pressure and transaxle fluid level.

PERIODIC SERVICE (Controls and Engine Start)

Control Checks and Engine Start System Tests

Checks for controls, dial force, and engine start system safety tests.

PERIODIC SERVICE (Safety Systems)

OPC System Checks

Periodic checks of the Operator Presence Control system.

PERIODIC SERVICE (Greasing and Muffler)

Greasing and Muffler/Spark Arrester Checks

Procedures for greasing and inspecting the muffler and spark arrester.

PERIODIC SERVICE (Engine Oil Change)

Changing Engine Oil (100 Hours)

Step-by-step guide for changing the engine oil.

PERIODIC SERVICE (Air Cleaner Service)

Air Cleaner Service (100 Hours)

Service procedures for carbon canister and outer air cleaner elements.

PERIODIC SERVICE (Fuel System Service)

Fuel Lines and Filter Check (100 Hours)

Inspection of fuel lines and filter for wear or blockage.

PERIODIC SERVICE (Brake Adjustment)

Adjusting the Parking Brake

How to adjust the parking brake for proper engagement.

PERIODIC SERVICE (Brake and Battery Checks)

Brake Spring Adjustments and Battery Condition

Adjusting brake springs and checking battery condition.

PERIODIC SERVICE (Battery Maintenance)

Battery Charging and Storage

Procedures for charging and storing the battery.

PERIODIC SERVICE (Cable Adjustments)

Choke and Throttle Cable Adjustments

How to adjust the choke and throttle cables for proper operation.

PERIODIC SERVICE (Cooling System Cleaning)

Cleaning Engine Cooling Areas

Procedure for cleaning engine cooling areas to prevent overheating.

PERIODIC SERVICE (Cooling Fins and Greasing)

Cleaning Oil Cooler Fins and Greasing

How to clean oil cooler fins and perform greasing.

PERIODIC SERVICE (Hydraulic Hose Check)

Checking Hydraulic Hose (200 Hours)

Inspection of hydraulic hoses for damage or leaks.

PERIODIC SERVICE (Spark Plug and Oil Filter)

Spark Plug Check and Oil Filter Replacement (200 Hours)

Procedures for checking spark plugs and replacing the oil filter.

PERIODIC SERVICE (Air Cleaner and Transaxle Filter)

Air Cleaner and Transaxle Filter Replacement (250/500 Hours)

Replacing air cleaner elements and the transaxle oil filter cartridge.

PERIODIC SERVICE (Transaxle Fluid)

Changing Transaxle Fluid and Purging

Steps for changing transaxle fluid and purging air from the system.

PERIODIC SERVICE (Clutch and Crankshaft)

Electric Clutch Adjustment and Crankshaft Lubrication (500 Hours)

Adjusting the electric clutch and lubricating the crankshaft.

PERIODIC SERVICE (Combustion Chamber and Spark Plugs)

Combustion Chamber Cleaning and Spark Plug Replacement (500 Hours)

Cleaning the combustion chamber and replacing spark plugs.

PERIODIC SERVICE (Yearly and 2-Year Items)

Yearly Maintenance Tasks

Tasks to perform annually: oil cooler, engine oil, cooling areas, muffler.

2-Year Maintenance Tasks

Tasks to perform every two years: hydraulic hose, fuel lines, carbon filter.

Service As Required (Fuses)

Procedure for replacing fuses when needed.

PERIODIC SERVICE (Blades)

Blade Checking and Replacement

How to check blade condition, sharpen, balance, and replace.

PERIODIC SERVICE (Belts)

Mower Belt Replacement

Procedure for replacing the mower deck belt.

ADJUSTMENT

Motion Control Lever Adjustments Overview

Adjusting the motion control levers for proper operation and HST neutral.

ADJUSTMENT (Motion Control Force)

Adjusting Motion Control Lever Force

Adjusting the lever resistance for operator preference.

ADJUSTMENT (Motion Control Alignment)

Motion Control Lever Alignment and Speed

Ensuring proper alignment and setting maximum forward speed.

ADJUSTMENT (Mower Deck Leveling)

Mower Deck Leveling (Anti-Scalp Rollers and Side-to-Side)

Adjusting anti-scalp rollers and leveling the deck side-to-side.

ADJUSTMENT (Mower Deck Leveling Front-to-Rear)

Mower Deck Leveling (Side-to-Side and Front-to-Rear)

Detailed procedures for leveling the mower deck.

ADJUSTMENT (Mower Deck and Pedal)

Mower Deck Leveling (Front-to-Rear) and Lift Pedal Adjustment

Finalizing front-to-rear deck leveling and adjusting the mower lift pedal.

ADJUSTMENT (Torque Specifications)

General Torque Specifications Chart

Torque values for various screws and bolts based on grade.

ADJUSTMENT (Tightening Torque Chart)

Tightening Torque Chart Details

Specific torque values for bolts with diagrams.

STORAGE PROCEDURES

Preparing for Storage and Removal

Steps for storing the machine and preparing it for use after storage.

TROUBLESHOOTING

Engine Troubleshooting Guide

Common engine problems and their causes and remedies.

TROUBLESHOOTING (Battery)

Battery Troubleshooting Guide

Troubleshooting common issues related to the machine's battery.

TROUBLESHOOTING (Machine and Mower)

Machine and Mower Troubleshooting Guides

Troubleshooting common machine operation and mower deck issues.

TROUBLESHOOTING (Mower Issues)

Mower Troubleshooting Details

Diagnosing and resolving issues like uneven cutting, vibration, and deck loading.

Related product manuals

Kubota Z723 User Manual

Table of Contents

Questions and Answers:

Kubota Z723 Specifications

Summary

ABBREVIATION LIST

UNIVERSAL SYMBOLS

Symbol Definitions

SAFETY AND WARNINGS

California Proposition 65 Warning

FOREWORD

SAFETY FIRST

Hazard Level Definitions

SAFE OPERATION

Before Operating Precautions

OPERATING PROCEDURES

Starting and Working Safely

Child Safety Precautions

SAFE OPERATION (Slopes and Stopping)

Operating on Slopes

Stopping and Transporting

SAFE OPERATION (Fuel, Battery, Storage)

Fuel, Battery, and Storage Safety

DANGER, WARNING, AND CAUTION LABELS

General and ROPS Safety Labels

DANGER, WARNING, AND CAUTION LABELS (Rollover)

Rollover Safety Labels

DANGER, WARNING, AND CAUTION LABELS (Rollover and Fuel)

Rollover and Fuel Leak Labels

DANGER, WARNING, AND CAUTION LABELS (Battery)

Battery Safety Labels

LABEL CARE AND MAINTENANCE

SERVICING OF MACHINE

Recording Machine Information

Warranty and Scrapping Information

SPECIFICATIONS

IMPLEMENT LIMITATIONS

INSTRUMENT PANEL AND CONTROLS

Control Panel Components Overview

MOWER DECK COMPONENTS

Anti-scalp Roller Identification

MOWER MOUNTING

Mounting the Mower Deck

MOWER MOUNTING AND ADJUSTMENT

Adjusting the Mower Deck

MOWER MOUNTING AND DISMOUNTING

Dismounting the Mower Deck

OPERATING THE ENGINE

Starting the Engine and Safety

OPERATING THE ENGINE (Controls)

Key Switch and Throttle/Choke Operation

OPERATING THE ENGINE (Checks)

Gauges and Daily Checks

OPERATING THE ENGINE (Starting Conditions)

Cold Weather Starting and Jump Starting

OPERATING THE ENGINE (Stopping)

Stopping the Engine

OPERATING THE MACHINE (Break-in)

New Machine Break-in Procedures

OPERATING THE MACHINE (ROPS Operation)

Operating and Folding the ROPS

OPERATING THE MACHINE (ROPS and Seat)

Raising ROPS and Seat Adjustment

OPERATING THE MACHINE (Operator Comfort)

Seat and Armrest Adjustments

OPERATING THE MACHINE (Implement Control)

Mower Lift Pedal and Carry Position

OPERATING THE MACHINE (Driving Controls)

Throttle, Parking Brake, and Motion Controls

OPERATING THE MACHINE (Motion Control Details)

Motion Control Lever Usage

OPERATING THE MACHINE (Stopping)

Stopping the Machine Procedures

OPERATING THE MACHINE (Parking and Transport)

Parking and Transporting Guidelines

OPERATING THE MACHINE (Transaxle)

Hydrostatic Transaxle Bypass Lever

OPERATING THE MOWER

Mowing Best Practices and Cutting Height

OPERATING THE MOWER (Deck Adjustment)