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john deer LA145 - User Manual

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OMGX23171 K8
JOHN DEERE
WORLDWIDE COMMERCIAL & CONSUMER
EQUIPMENT DIVISION
OMGX23171 K8
GX23171
K8
John Deere Tractors
100 Series
OPERATOR’S MANUAL
North American Version
Litho in U.S.A.

Table of Contents

Questions and Answers

  • R
    randallpeckAug 21, 2025
    Why is my john deer LA145 Tractor engine hard to start?
    • C
      Carmen SantiagoAug 21, 2025
      Your John Deer Tractor engine might be hard to start due to several reasons. The carburetor may need adjustment or cleaning, the choke cable might not be properly adjusted, or the fuel filter could be clogged. Other potential causes include a faulty spark plug, stale or improper fuel, loose or corroded electrical connections, or using the incorrect engine oil viscosity. Consider adjusting or cleaning the carburetor, adjusting the choke cable, cleaning or replacing the fuel filter, replacing the spark plug, using fresh, proper fuel, inspecting and securing electrical connections, and using the correct engine oil viscosity.
  • J
    jessica19Sep 4, 2025
    Why john deer LA145 battery will not charge?
    • S
      summerspatrickSep 4, 2025
      If your John Deer Tractor battery won't charge, it could be due to a dead cell in the battery, in which case you should replace the battery. Dirty battery cables and terminals can also prevent charging, so clean them. Low engine speed or excessive idling can also affect battery charging, so increase the engine speed.
  • N
    Nicole DuncanSep 2, 2025
    Why does my john deer LA145 Tractor engine run unevenly?
    • H
      Harry Johnson MDSep 2, 2025
      An uneven running engine in your John Deer Tractor can be caused by several factors. The cooling fins could be plugged, electrical connections might be loose, or the choke or throttle cable could be sticking. Additionally, the fuel line or fuel filter might be plugged, the fuel could be stale or dirty, or the improper fuel type could be in use. A plugged air cleaner element can also cause this issue. Try cleaning the cooling fins, tightening electrical connections, inspecting and freeing sticking cables, clearing the plugged fuel line or filter, replacing with fresh fuel, using the proper fuel type, and cleaning or replacing the air cleaner element.
  • S
    Sherry TorresSep 1, 2025
    Why John Deer Tractor vibrates too much?
    • K
      Kristopher WoodsSep 1, 2025
      Excessive vibration or rattling in your John Deer Tractor can be attributed to several factors. The attachment drive belts may be worn or damaged, or the traction drive belt could be damaged or worn. Dirt on the drive sheaves or blades that are bent or out of balance can also cause these issues. Consider replacing the worn or damaged attachment drive belts, replacing the damaged or worn traction drive belt, cleaning the drive sheaves, and repairing or balancing the blades.
  • K
    Kristopher BowmanAug 30, 2025
    What causes poor engine performance in john deer LA145?
    • P
      Phillip ThomasAug 30, 2025
      Poor engine performance in your John Deer Tractor can be caused by dirt in the fuel system or old fuel. Replace the fuel with fresh stabilized fuel. It is also recommended to obtain fuel from another supplier before suspecting machine problems. Suppliers blend fuels differently, and changing suppliers will generally solve any performance problems. Fuel blended with alcohol or ether may contribute to performance problems by causing gum and varnish deposits, especially if fuel is stored for several weeks or more. Obtain fresh fuel.
  • M
    Mary MossAug 29, 2025
    Why does my john deer LA145 engine backfires?
    • S
      Shawn PetersonAug 29, 2025
      Your John Deer Tractor engine might backfire due to a faulty spark plug, so replace it. Also, ensure the operator is seated, as raising off the seat can cause backfiring.
  • B
    brian60Aug 27, 2025
    Why John Deer Tractor starter does not work?
    • K
      Karen ThomasAug 27, 2025
      If the starter on your John Deer Tractor isn't working or turning the engine, the brake pedal may not be depressed, or the mower might be engaged. Ensure the brake pedal is depressed and the mower is disengaged. Corroded battery terminals or a discharged battery could also be the cause, so clean the battery terminals and charge the battery. A blown fuse can also prevent the starter from working, so replace the blown fuse. If the fusible link in the starting circuit is blown, consult your authorized dealer.
  • L
    lmcmillanAug 26, 2025
    What to do if john deer LA145 Tractor engine overheats?
    • T
      Thomas DownsAug 27, 2025
      If your John Deer Tractor engine is overheating, check the engine air intake screen and clean it if it's plugged. Also, clean the cooling fins. Ensure the engine oil level is correct, adjusting if it's too low or too high. Avoid operating the engine for extended periods at a slow idle speed.
  • R
    Robin JonesAug 25, 2025
    Why does my john deer LA145 Tractor engine lose power?
    • G
      gregoryblevinsAug 25, 2025
      Your John Deer Tractor engine may be losing power due to several reasons: the engine might be overheating, there could be too much oil in the engine, the air cleaner might be dirty, or the spark plug could be faulty. Also, the travel speed might be too fast for the conditions, or you might be using the improper fuel. In order to solve this problem you should check the engine cooling system, check and adjust oil level, clean or replace air cleaner, replace the faulty spark plug, reduce travel speed, and use proper fuel type.
  • C
    Catherine WhiteAug 23, 2025
    What to do if john deer LA145 engine will not start?
    • D
      Debbie HernandezAug 23, 2025
      If your John Deer Tractor engine won't start, make sure the brake pedal is depressed and the mower is disengaged. Check that the spark plug wire is securely connected and that you're using the correct fuel type. Also, inspect the fuel filter and clean or replace it if it's plugged. Finally, check the safety switch and replace it if it's defective. If these steps don't resolve the issue, refer to the Electrical Troubleshooting Section.

Summary

Introduction

Thank You for Purchasing a John Deere Product

Expresses gratitude for the purchase and wishes for safe use.

Using Your Operators Manual

Explains how to use the manual for safe and effective machine operation and understanding.

Special Messages

Highlights messages for safety concerns, machine damage, and operating/servicing info.

Product Identification

Record Identification Numbers

Instructions to record machine and engine identification numbers for service.

Register Your Product and Warranty Online

Guide to register product and warranty via the internet.

Safety Labels

Refers to safety labels and their locations on the machine.

Safety Labels

Understanding The Machine Safety Labels

Explains the meaning of DANGER, WARNING, and CAUTION safety alert symbols.

Safety

Operating Safely

General safety instructions for operating the cutting machine safely.

Using a Spark Arrestor

Information about spark arrestor requirements and availability.

Checking Mowing Area

Guidelines for inspecting the mowing area for safety and obstacles.

Parking Safely

Steps for safely parking the machine.

Avoid Tipping

Precautions and advice to prevent machine tipping, especially on slopes.

Keep Riders Off

Instructions to ensure only the operator is on the machine.

Towing Loads Safely

Guidelines for safely towing loads with the machine.

Wear Appropriate Clothing

Recommendations for protective clothing and safety gear.

Driving Safely on Public Roads

Safety advice for operating the machine on public roads.

Practice Safe Maintenance

Guidelines for performing maintenance safely.

Avoid High Pressure Fluids

Warnings and precautions regarding high-pressure hydraulic fluids.

Prevent Fires

Tips to prevent fires related to machine operation and storage.

Assembly

Handling Fuel Safely

Essential safety practices for handling flammable fuel.

Tire Safety

Warnings and precautions related to tire mounting and inflation.

Checking Wheel Hardware

Importance of checking wheel hardware tightness.

Handling Waste Product and Chemicals

Guidelines for safe disposal of waste products and chemicals.

Charge and Connect Battery

Instructions for safely charging and connecting the battery.

Check Tire Pressure

Instruction to check tire pressure as per the service manual.

Adjust Mower Deck Level

Steps to adjust the mower deck to the correct level.

Check Engine Oil Level

Instructions to check the engine oil level.

Check Machine Safety System

Procedure to test the safety interlock circuit.

Break In Electric Engagement Clutch (If Equipped)

Procedure for breaking in the electric engagement clutch.

Operating Controls

Operator Station Controls (LA105)

Identification and description of controls on the LA105 operator station.

Operator Station Controls (LA115, LA125, LA135)

Identification and description of controls on the LA115, LA125, LA135 operator stations.

Operator Station Controls (LA145, LA155, LA165, LA175)

Identification and description of controls on the LA145, LA155, LA165, LA175 operator stations.

Operating

Daily Operating Checklist

Checklist of daily checks before operating the machine.

Adjusting Seat

Steps for adjusting the operator's seat for comfort and safety.

Lumbar Seat Adjustment (LA165, LA175)

How to adjust lumbar support on specific models.

Adjusting Cutting Height

Guide to adjusting the mower deck cutting height.

Adjusting Mower Deck Level (Method One)

Method one for adjusting the mower deck level.

Adjusting Mower Deck Level (Method Two)

Method two for adjusting the mower deck level.

Adjusting Mower Deck Wheels

Instructions for adjusting the mower deck wheels.

Testing Safety Systems

Procedures to test the machine's safety systems.

Testing Park Brake Switch

Test procedure for the park brake safety switch.

Testing Park Brake

Test procedure for the park brake functionality.

Testing Attachment Engagement Switch or Lever

Test procedure for the attachment engagement control.

Testing Seat Switch

Test procedure for the seat safety switch.

Testing Reverse Implement Option (RIO)

Test procedure for the Reverse Implement Option feature.

Using the Park Brake

Steps for locking and unlocking the park brake.

Using the Hour Meter and Service Reminder

Explanation of the hour meter and service reminder functions.

Using Key Switch and Headlights

How to use the key switch and operate the headlights.

Starting the Engine

Detailed instructions for starting the engine safely.

Idling the Engine

Precautions and advice regarding engine idling.

Stopping the Engine

Recommended procedure for safely stopping the engine.

Using Travel Controls on Gear Transmission

How to use travel controls for gear transmission.

Using Travel Controls on Automatic Transmission

How to use travel controls for automatic transmission.

Using The Reverse Implement Option (RIO)

Guidelines for using the Reverse Implement Option.

Using Cruise Control (LA125, LA135, LA145, LA155, LA165, LA175)

Instructions for engaging and disengaging cruise control.

Engaging and Disengaging Mower

Steps for engaging and disengaging the mower deck.

Using Mulch Cover (107 cm (42 in.) and 122 cm (48 in.) Mower Decks (If Equipped))

How to install and use the mulch cover.

Checking For Plugging While Driving

How to check for plugged mower deck or chute while driving.

Removing Debris From Inspection Points

Procedures for removing debris from inspection points.

Moving Machine by Hand

Instructions for moving the machine manually.

Transporting Machine on Trailer

Guidelines for safely transporting the machine on a trailer.

Using Weights

Information on using weights for stability and their proper application.

Using Tire Chains

Recommendations for using tire chains.

Using Accessories

Mentions using accessories, likely a placeholder or intro.

Service Intervals

Using the Power Port (If Equipped)

Information about the electric power port for accessories.

Using Cargo Mount System

Information about the cargo mount system for attachments.

Using Storage Accessories

Description of storage accessories like pockets.

Choosing Mower Blades

Explains different types of mower blades available.

Mowing Tips

Recommendations for achieving the best lawn cut quality.

Servicing Your Machine

General advice on servicing the machine and conditions requiring frequent service.

Intervals

Timetables for routine maintenance intervals.

Service Lubrication

Lubricating Front Axle

Steps for lubricating the front axle components.

Wheel Spindles and Bushings

How to lubricate wheel spindles and bushings.

Front Axle Pivot

How to lubricate the front axle pivot.

Lubricating Pivot Points

Lubrication points for the mower deck.

Grease

Recommendations for John Deere greases and their effective temperature ranges.

Service Engine

Engine Warranty Maintenance Statement

Statement regarding warranty for emission control devices and systems.

Avoid Fumes

Warnings about engine exhaust fumes and ventilation.

Engine Oil

Guidance on selecting engine oil viscosity based on temperature.

Checking Engine Oil Level

Procedure for checking the engine oil level.

Changing Engine Oil and Filter

Instructions for changing engine oil and filter.

Cleaning Air Intake Screen and Engine Fins

How to clean air intake screen and engine fins.

Checking and Cleaning Air Cleaner Elements (LA105 and LA115)

Procedure for checking and cleaning air cleaner elements on specific models.

Checking and Cleaning Air Cleaner Elements (LA135 and LA145)

Procedure for checking and cleaning air cleaner elements on specific models.

Checking and Cleaning Air Cleaner Elements (LA125)

Procedure for checking and cleaning air cleaner elements on LA125 model.

Checking and Cleaning Air Cleaner Elements (LA155, LA165 and LA175)

Procedure for checking and cleaning air cleaner elements on specific models.

Checking and Cleaning Emission Filter (If Equipped)

How to check and clean the emission filter.

Checking Spark Plug

Steps for checking and inspecting the spark plug.

Service Transmission

Checking Transmission

Information on the transmission being sealed and requiring dealer service.

Service Mower

Refers to servicing the mower, specifically drive belt.

Removing or Installing Mower Drive Belt at Engine Drive Sheave (122 cm (48 in.) and 137 cm (54 in.) Mower Deck)

Instructions for removing/installing drive belt on specific mower decks.

Service Mower

Removing Mower Deck

Detailed steps for removing the mower deck from the machine.

Installing Mower Deck

Detailed steps for installing the mower deck onto the machine.

Replacing Mower Drive Belt (107 cm (42 in.) Mower Deck)

Steps to replace the drive belt on a 107 cm mower deck.

Replacing Mower Drive Belt (122 cm (48 in.) and 137 cm (54 in.) Mower Decks)

Steps to replace the drive belt on larger mower decks.

Adjusting Mower Belt Tension (107 cm (42 in.) Mower Deck)

How to adjust mower belt tension on a 107 cm mower deck.

Adjusting Spindle Brakes (107 cm (42 in.) Mower Deck)

Procedure for adjusting spindle brakes on a 107 cm mower deck.

Checking for Bent Mower Blades

How to check mower blades for bends and defects.

Service Electrical

Servicing Mower Blades

General guidelines for servicing mower blades.

Removing Mower Blades

Steps to remove mower blades.

Installing Mower Blades

Steps to install mower blades.

Sharpening Blades

Instructions for sharpening mower blades.

Balancing Blades

How to balance mower blades.

Service the Battery Safely

Safety precautions for servicing the battery.

Cleaning Battery and Terminals

Steps to clean battery and terminals.

Removing and Installing the Battery

Procedures for removing and installing the battery.

Using Booster Battery

Instructions for using a booster battery to start the machine.

Service Miscellaneous

Replacing Headlight Bulb

Steps for replacing a headlight bulb.

Replacing Fuse

Steps for replacing a blown fuse.

Using Proper Fuel

Recommendations for using the correct type of fuel.

Filling Fuel Tank

Safety precautions and instructions for filling the fuel tank.

Cleaning Plastic Surfaces

Proper methods for cleaning plastic surfaces to avoid damage.

Cleaning and Repairing Metal Surfaces

Procedures for cleaning and repairing metal surfaces.

Repairing Minor Scratches (surface scratch)

How to repair minor surface scratches.

Removing and Installing Front Wheel Assembly

Steps for removing and installing the front wheel assembly.

Removing and Installing Rear Wheel Assembly

Steps for removing and installing the rear wheel assembly.

Troubleshooting

Using Troubleshooting Chart

Guidance on using the troubleshooting chart for problems.

Engine

Troubleshooting guide for engine-related issues.

Electrical

Troubleshooting guide for electrical system issues.

Tractor

Troubleshooting guide for tractor-related issues.

Mower

Troubleshooting guide for mower issues.

Storage

Storing Safety

Safety precautions for storing the machine.

Preparing Machine for Storage

Steps to prepare the machine for storage.

Preparing Fuel and Engine For Storage

Instructions for preparing the fuel and engine for storage.

Specifications

Engine

Engine specifications including clearances, torque, and filter types.

Transaxle Model

Information on the transaxle model and travel speeds.

Automatic Model LA115

Specifications for the Automatic Model LA115.

Gear Model LA105

Specifications for the Gear Model LA105.

Automatic Model LA125

Specifications for the Automatic Model LA125.

Automatic Models LA135 and LA145

Specifications for Automatic Models LA135 and LA145.

Automatic Model LA155

Specifications for the Automatic Model LA155.

Automatic Models LA165 and LA175

Specifications for Automatic Models LA165 and LA175.

Electrical System

Specifications for the electrical system, including charging and battery.

Capacities

Capacities of various parts like crankcase, fuel tank.

Fuel System (All Models)

Recommended fuel types for all models.

Recommended Lubricants (All Models)

Recommended engine oil and grease types.

Dimensions

Physical dimensions of the machine.

Tires

Tire sizes and pressure information for different models.

Mower Deck - 107 cm (42 in.)

Specifications for the 107 cm mower deck.

Mower Deck - 122 cm (48 in.)

Specifications for the 122 cm mower deck.

Mower Deck - 137 cm (54 in.)

Specifications for the 137 cm mower deck.

Warranty

Product Warranty

General overview of the product warranty.

California and U.S. EPA Emissions Control System Warranty Statement (Small Off-Road Gas Engines)

Warranty details for emissions control systems.

Your Warranty Rights and Obligations

Explains owner's rights and responsibilities under warranty.

Manufacturers Warranty Coverage

Details on the manufacturer's warranty coverage for emissions parts.

Owners Warranty Responsibilities

Owner's responsibilities for maintenance and warranty claims.

General Emissions Warranty Coverage

Overview of the general emissions warranty period and coverage.

Emissions Warranty Interpretation

Clarifies interpretation of the emissions warranty terms.

Emission Warranty Parts List

Lists parts covered under the emissions warranty.

Getting Quality Service

Service Literature

Information on obtaining service literature like Parts Catalog or Technical Manual.

Parts

Recommendation for John Deere quality parts and ordering information.

Order Service Parts Online

Link and instructions for ordering parts online.

Filters

Part numbers for various filters.

Spark Plug

Part number for spark plug.

Battery

Part number for battery and home maintenance kits.

John Deere Quality Continues with Quality Service

Overview of John Deere's service and support process.

Service Record

Record Service Dates

A log to record service dates for oil change, filter changes, etc.

john deer LA145 Specifications

General IconGeneral
Engine Power22 hp
TransmissionHydrostatic
Cylinders2
Drive2WD
Blades3
Cutting Width48 inches
Turning Radius18 inches

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