Kubota Z412KW User Manual (English)

Questions and Answers:

M
Matthew MartinSep 6, 2025
Why are the blades scalping grass on my Kubota Lawn Mower?
- D
  Dr. Cody WashingtonSep 6, 2025
  If the blades on your Kubota Lawn Mower are scalping the grass, it could be because the cutting height is too low (raise the cutting height), the turning speed is too fast (reduce speed on turns), there are ridges in the terrain (change the mowing pattern), the terrain is rough or uneven (adjust wheels pressure and anti-scalp rollers), the anti-scalp rollers are not adjusted correctly (adjust wheels pressure and anti-scalp rollers), or the blade(s) are bent (replace blade(s)).
D
Derek ThompsonAug 25, 2025
Why does my Kubota Lawn Mower engine overheat?
- C
  Carrie WalkerAug 26, 2025
  If your Kubota Lawn Mower engine overheats, possible causes include the engine being overloaded (lower speed or reduce load), insufficient engine oil (fill engine oil), dirty engine air intake screen and cooling fins (clean them), a plugged air cleaner element (clean or replace it), engine speed too low (operate at “FAST” speed), or operating ground speed too fast (operate at a slower ground speed).
H
Holly JacksonAug 26, 2025
Why are the exhaust fumes colored black from Kubota Z412KW Lawn Mower?
- A
  Anna WolfAug 27, 2025
  If the exhaust fumes from your Kubota Lawn Mower are black, dark, or gray, it could be due to an overload (reduce load), using low-grade fuel (use specified fuel), a clogged fuel filter (replace the fuel filter), a clogged air cleaner (clean or replace the air cleaner element), or the choke not being fully opened (check the choke position).
O
Omar DuncanAug 27, 2025
How to prevent streaking of grass uncut with Kubota Z412KW Lawn Mower?
- O
  omartinezAug 27, 2025
  If your Kubota Lawn Mower is leaving streaks of uncut grass, try slowing down your ground speed. Ensure you are mowing at full throttle and check/reset the engine rpm. If the grass is too long, cut it twice. Also, check if the blades are dull or damaged, and replace or sharpen them as needed. Finally, clean any debris from the mower deck.
B
bwhiteAug 28, 2025
What to do if Kubota Z412KW engine stops suddenly?
- J
  John NguyenAug 28, 2025
  If your Kubota Lawn Mower engine stops suddenly, first, refuel if the fuel level is insufficient. Then, check the fuel valve position and the carburetor fuel valve position.
M
Melissa AllenAug 29, 2025
Why is my Kubota Z412KW engine knocking?
- R
  Rachel AndersonAug 29, 2025
  If your Kubota Lawn Mower engine knocks, it might be due to stale or low octane fuel (use specified fuel), the engine being overloaded (lower ground speed or reduce load), or the engine speed being too low (operate at “FAST” speed).
M
Monica AdkinsSep 12, 2025
What to do if Kubota Lawn Mower does not move while the engine is running?
- J
  Jeremiah ColemanSep 12, 2025
  If your Kubota Lawn Mower does not move while the engine is running, check if the parking brake is on and release it. Also, verify that the transaxle fluid level is sufficient and fill with oil if necessary.
R
rowekimberlySep 13, 2025
Why starter does not function from the beginning, and lights soon become dim on Kubota Lawn Mower?
- J
  Jeremy FloresSep 13, 2025
  If the starter on your Kubota Lawn Mower doesn't function from the beginning and the lights soon become dim, it is caused by insufficient charging. Charge the battery sufficiently.
J
Jennifer JohnsonSep 5, 2025
Why is my Kubota Lawn Mower vibrating excessively?
- L
  Lawrence FigueroaSep 5, 2025
  If your Kubota Lawn Mower is experiencing excessive vibration, check for debris on the mower deck or in the pulleys, and clean them if necessary. Also, inspect the mower belt for damage and replace it if needed. Damaged pulleys should be replaced as well. Check pulleys and have blades balanced.
C
Connie HansenSep 3, 2025
Why are the exhaust fumes colored white or blue from Kubota Z412KW Lawn Mower?
- R
  Rickey Jackson MDSep 3, 2025
  If the exhaust fumes from your Kubota Lawn Mower are white or blue, it could be due to excessive engine oil (reduce to the specified oil level) or worn/stuck piston ring (consult your local KUBOTA Dealer).

Kubota Z412KW Specifications

General

Engine Type	Gasoline
Displacement	726 cc
Transmission	Hydrostatic
Drive	2WD
Cutting Height	1.5 - 4.5 in
Number of Blades	3
Deck Type	Fabricated
Turning Radius	Zero-turn
Cutting Width	48 in

Summary

ABBREVIATION LIST

Definitions

Lists abbreviations used in the manual.

UNIVERSAL SYMBOLS

Symbols with meaning

Explains various universal symbols used on the machine.

FOREWORD

SAFETY FIRST

Emphasizes safety and explains warning symbols.

SAFE OPERATION

BEFORE OPERATING THE MACHINE

Essential checks and knowledge before starting operation.

SAFE OPERATION

ROPS

Information on Roll-Over Protective Structure and its usage.

OPERATING THE MACHINE

Starting to operate the machine

Procedures for safely starting the machine.

SAFE OPERATION

Safety for children

Precautions regarding children's safety around the machine.

Pulling loads

Safety guidelines for pulling loads with the machine.

SAFE OPERATION

Operating on slopes

Safety procedures for operating on inclines and slopes.

TRANSPORTING THE MACHINE

Transporting the Machine

Instructions for safely transporting the machine.

SERVICING AND STORAGE

Servicing the machine

General guidelines for machine maintenance and servicing.

SAFE OPERATION

Storage

Procedures for storing the machine safely.

SERVICING OF MACHINE

DEALER SERVICE

Information on dealer service and recording machine details.

SERVICING OF MACHINE

WARRANTY

Details about the machine's warranty coverage.

SCRAPPING THE MACHINE AND ITS PROCEDURE

Guidelines for safely disposing of the machine.

SPECIFICATIONS

SPECIFICATION TABLE

Technical specifications for the Kubota Zero Turn Mower models.

IMPLEMENT LIMITATIONS

Guidelines for using implements with the Kubota machine.

INSTRUMENT PANEL AND CONTROLS

INSTRUMENT PANEL, SWITCHES AND HAND CONTROLS

Identification and function of controls and instruments.

MOWER MOUNTING

MOUNTING THE MOWER DECK

Step-by-step instructions for mounting the mower deck.

ADJUSTING THE MOWER

Procedures for adjusting the mower deck.

DISMOUNTING THE MOWER DECK

Steps for removing the mower deck from the machine.

OPERATING THE ENGINE

GETTING ON AND OFF THE MACHINE SAFELY

Safe procedures for mounting and dismounting the machine.

STARTING THE ENGINE

Step-by-step guide to starting the engine.

STARTING THE ENGINE

Throttle lever

Operation of the throttle lever for engine speed control.

Key switch

Function and operation of the key switch.

STOPPING THE ENGINE

Stopping the Engine

Procedures for safely stopping the engine.

CHECK DURING OPERATING

Check During Operating

Important checks to perform while the machine is operating.

COLD WEATHER STARTING

Cold Weather Starting

Special starting procedures for cold weather.

WARMING UP THE ENGINE

Warm-up and transmission oil in the low temperature range

Importance of warm-up for engine and hydraulic systems.

JUMP STARTING

Step-by-step guide for safely jump starting the machine.

OPERATING THE MACHINE

OPERATING A NEW MACHINE

Guidelines for operating a new machine to ensure longevity.

OPERATING THE FOLDABLE ROPS

Safety and operational procedures for the foldable ROPS.

OPERATING THE MACHINE

Raising the ROPS to the upright position

How to raise and secure the ROPS.

STARTING THE MACHINE

Starting the Machine

General steps for starting the machine after initial setup.

STARTING THE MACHINE

Operator's seat

Adjusting the operator's seat for comfort and safety.

Seat belt

Importance and use of the seat belt.

OPERATING THE MACHINE

Mower lift pedal

How to operate the mower lift pedal.

Parking brake pedal

How to apply and release the parking brake.

Motion control lever

Safety warnings and basic operation of motion control levers.

STARTING THE MACHINE

Operating position of the motion control lever

How to use motion control levers for machine movement.

STOPPING THE MACHINE

Stopping the Machine

Procedures for safely stopping the machine.

PARKING THE MACHINE

Steps to safely park the machine.

ACCESSORIES

Electric outlet (12 volt), plug, smartphone holder, cup holder and utility box

Description of electrical accessories and their use.

TRANSPORTING THE MACHINE

Hydrostatic transaxle bypass rods

How to use and manage hydrostatic transaxle bypass rods.

OPERATING THE MOWER

MOWING TIPS

Advice and techniques for effective mowing.

ADJUSTING THE CUTTING HEIGHT

How to adjust the mower deck cutting height.

OPERATING THE MOWER

Adjusting the cutting height

Detailed steps for setting the cutting height.

Anti-scalp roller setting

How to adjust the anti-scalp rollers for optimal performance.

OPERATING THE MOWER

PTO switch

How to engage and disengage the PTO switch.

Starting the machine

Steps and safety for starting the machine.

TIRES AND WHEELS

TIRES

Information on tire types and inflation pressure.

WHEELS

Important notes regarding wheel installation and tightening.

WHEELS

Removing the front caster wheels

Steps for safely removing front caster wheels.

Installing the front caster wheels

Steps for safely installing front caster wheels.

MAINTENANCE

SERVICE INTERVALS

Schedule of recommended maintenance tasks by operating hours.

MAINTENANCE

PERIODIC SERVICE CHART LABEL

Quick reference chart for periodic maintenance services.

LUBRICANTS AND FUEL

Lubricants and Fuel Details

Details on types of lubricants, fuel, and their capacities.

PERIODIC SERVICE

OPENING THE STEP

How to open and remove the machine step.

RAISING AND LOWERING THE OPERATOR'S SEAT

Raising the Operator's Seat

Procedure for raising the operator's seat.

Lowering the Operator's Seat

Procedure for lowering the operator's seat.

DAILY CHECK

Daily Check Procedures

Essential daily checks to ensure proper machine condition.

DAILY CHECK

Checking the engine oil level

How to check the engine oil level.

Checking the amount of fuel and refueling

Procedures for checking fuel and safe refueling.

PERIODIC SERVICE

Checking and cleaning the air intake screen

How to check and clean the air intake screen.

DAILY CHECK

Checking the transaxle fluid level

How to check the transaxle fluid level.

Checking the tire pressure

Procedures for checking tire pressure.

PERIODIC SERVICE

Checking the dial cam rotation strength

How to check the dial cam rotation strength.

Checking movable parts

How to check and maintain movable parts.

EVERY 25 HOURS

Cleaning the cylinder and cylinder head fins

Steps for cleaning engine cylinder and head fins.

EVERY 25 HOURS

Cleaning the foam element

Procedure for cleaning the foam air filter element.

EVERY 50 HOURS

Checking the engine start system

Tests for the engine start system safety features.

EVERY 50 HOURS

Checking the OPC system

Testing the Operator Presence Control system.

Checking the carbon canister air filter

How to check and clean the carbon canister air filter.

EVERY 50 HOURS

Greasing

Points and procedure for greasing the machine.

EVERY 100 HOURS

Changing the engine oil

Steps for changing the engine oil.

EVERY 100 HOURS

Cleaning the air cleaner paper element

How to clean the air cleaner paper element.

Checking the spark plug

How to check the spark plug condition and gap.

EVERY 100 HOURS

Checking the fuel filter and fuel lines

Inspecting fuel filter and lines for wear or damage.

EVERY 100 HOURS

Checking the battery condition

How to check the battery's condition and health.

Charging the battery

Procedures for safely charging the battery.

EVERY 100 HOURS

Adjusting the throttle cable

How to adjust the throttle cable for correct operation.

Adjusting the choke cable

How to adjust the choke cable for proper function.

EVERY 200 HOURS OR EVERY 1 YEAR

Replacing the air cleaner paper element

Steps for replacing the air cleaner paper element.

EVERY 200 HOURS

Replacing the fuel filter

Procedure for replacing the fuel filter.

Replacing the engine oil filter

Steps for replacing the engine oil filter.

EVERY 200 HOURS

Changing the engine oil

Detailed procedure for changing engine oil.

EVERY 300 HOURS

Adjusting the engine valve clearance

Service for adjusting engine valve clearance.

EVERY 400 HOURS

Replacing the transaxle oil filter

Steps for replacing the transaxle oil filter.

EVERY 400 HOURS

Changing the transaxle fluid

Procedure for changing the transaxle fluid.

EVERY 500 HOURS

Replacing the spark plug

Steps for replacing the spark plug.

EVERY 500 HOURS

Lubricating the crankshaft

How to lubricate the crankshaft.

EVERY 500 HOURS OR EVERY 1 YEAR

Adjusting the electric clutch

How to adjust the electric clutch for proper operation.

EVERY 1 YEAR

Checking fuel lines

How to check fuel lines for wear and leaks.

Checking hydraulic hoses

How to check hydraulic hoses for damage.

EVERY 2 YEARS

Replacing the carbon canister air filter

Procedure for replacing the carbon canister air filter.

EVERY 4 YEARS

Replacing hydraulic hoses

Procedure for replacing hydraulic hoses.

Replacing fuel lines

Procedure for replacing fuel lines.

SERVICE AS REQUIRED

Replacing fuses

How to replace blown fuses.

SERVICE AS REQUIRED

Checking and replacing blades

How to check, sharpen, and replace mower blades.

SERVICE AS REQUIRED

Replacing the mower belt

Steps for replacing the mower belt.

ADJUSTMENT

MOTION CONTROL LEVER

Adjustments related to the motion control levers.

ADJUSTMENT

MOTION CONTROL LEVER

Adjustments for maximum speed and lever alignment.

ADJUSTMENT

Adjusting the mower lift pedal

How to adjust the mower lift pedal.

MOWER DECK LEVEL

Anti-scalp rollers

How to adjust anti-scalp rollers for the mower deck.

ADJUSTMENT

MOWER DECK LEVEL

Procedures for leveling the mower deck.

TROUBLESHOOTING

ENGINE TROUBLESHOOTING

Diagnosing and resolving engine-related problems.

TROUBLESHOOTING

MOWER TROUBLESHOOTING

Diagnosing and resolving mower-specific issues.

Related product manuals

Kubota Z412KW User Manual

Table of Contents

Questions and Answers:

Kubota Z412KW Specifications

Summary

ABBREVIATION LIST

Definitions

UNIVERSAL SYMBOLS

Symbols with meaning

FOREWORD

SAFETY FIRST

SAFE OPERATION

BEFORE OPERATING THE MACHINE

SAFE OPERATION

ROPS

OPERATING THE MACHINE

Starting to operate the machine

SAFE OPERATION

Safety for children

Pulling loads

SAFE OPERATION

Operating on slopes

TRANSPORTING THE MACHINE

Transporting the Machine

SERVICING AND STORAGE

Servicing the machine

SAFE OPERATION

Storage

SERVICING OF MACHINE

DEALER SERVICE

SERVICING OF MACHINE

WARRANTY

SCRAPPING THE MACHINE AND ITS PROCEDURE

SPECIFICATIONS

SPECIFICATION TABLE

IMPLEMENT LIMITATIONS

IMPLEMENT LIMITATIONS

INSTRUMENT PANEL AND CONTROLS

INSTRUMENT PANEL, SWITCHES AND HAND CONTROLS

MOWER MOUNTING

MOUNTING THE MOWER DECK

ADJUSTING THE MOWER

ADJUSTING THE MOWER

DISMOUNTING THE MOWER DECK

OPERATING THE ENGINE

GETTING ON AND OFF THE MACHINE SAFELY

STARTING THE ENGINE

STARTING THE ENGINE

Throttle lever

Key switch

STOPPING THE ENGINE

Stopping the Engine

CHECK DURING OPERATING

Check During Operating

COLD WEATHER STARTING

Cold Weather Starting

WARMING UP THE ENGINE

Warm-up and transmission oil in the low temperature range

JUMP STARTING

JUMP STARTING

OPERATING THE MACHINE

OPERATING A NEW MACHINE

OPERATING THE FOLDABLE ROPS

OPERATING THE FOLDABLE ROPS

OPERATING THE MACHINE

Raising the ROPS to the upright position

STARTING THE MACHINE

Starting the Machine

STARTING THE MACHINE

Operator's seat

Seat belt

OPERATING THE MACHINE

Mower lift pedal

Parking brake pedal

Motion control lever

STARTING THE MACHINE

Operating position of the motion control lever

STOPPING THE MACHINE

Stopping the Machine

PARKING THE MACHINE