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john deer LA115 - 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

  • E
    Elizabeth MaldonadoAug 21, 2025
    Why is my john deer LA115 engine hard to start?
    • T
      Tyrone DavisAug 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
    Joseph SuttonSep 4, 2025
    Why john deer LA115 Tractor battery will not charge?
    • B
      bsimsSep 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.
  • W
    Wanda WilliamsSep 2, 2025
    Why does my john deer LA115 engine run unevenly?
    • L
      Larry SanchezSep 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.
  • V
    valerie75Sep 1, 2025
    Why john deer LA115 vibrates too much?
    • L
      Lori BaileySep 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.
  • J
    Joseph MartinezAug 30, 2025
    What causes poor engine performance in John Deer Tractor?
    • T
      Thomas HamiltonAug 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.
  • T
    timothyruizAug 29, 2025
    Why does my john deer LA115 engine backfires?
    • R
      Rhonda FlynnAug 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.
  • K
    Kristi AvilaAug 27, 2025
    Why john deer LA115 Tractor starter does not work?
    • L
      Lisa CoxAug 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.
  • C
    Cynthia AllenAug 26, 2025
    What to do if john deer LA115 engine overheats?
    • V
      Virginia FieldsAug 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.
  • C
    Cassandra CampbellAug 25, 2025
    Why does my john deer LA115 Tractor engine lose power?
    • K
      Kevin GordonAug 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.
  • D
    Daniel TownsendAug 23, 2025
    What to do if John Deer Tractor engine will not start?
    • E
      Elizabeth ChristensenAug 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

Using Your Operators Manual

Learn how to use this operator's manual for safe and effective machine operation.

Special Messages

Understand safety symbols and messages for hazard and damage prevention.

Product Identification

Record Identification Numbers

Record essential machine and engine identification numbers for service and warranty.

Register Your Product and Warranty Online

Register your John Deere product online to ensure post-sales service and important information.

Safety Labels

Understanding The Machine Safety Labels

Learn the meaning of DANGER, WARNING, and CAUTION symbols and text on your machine.

Safety

Operating Safely

Essential safety instructions for operating the cutting machine to prevent injury or death.

Parking Safely

Step-by-step guide for safely parking the machine on level surfaces.

Avoid Tipping

Safety precautions for operating on slopes to prevent loss-of-control and tip-overs.

Practice Safe Maintenance

Guidelines for safely maintaining the machine, including checks and repairs.

Avoid High Pressure Fluids

Warnings and precautions for handling high-pressure hydraulic fluids to prevent injury.

Prevent Fires

Safety measures to prevent fires caused by debris, heat, or improper storage.

Assembly

Handling Fuel Safely

Critical safety procedures for handling flammable fuel to prevent injury and fire.

Charge and Connect Battery

Step-by-step instructions for safely charging and connecting the machine's battery.

Check Machine Safety System

Perform safety system checks to ensure proper functioning of interlock circuits.

Operating Controls

Operator Station Controls (LA105)

Identifies and explains the controls located at the operator's station for LA105 models.

Operator Station Controls (LA115, LA125, LA135)

Identifies and explains the controls located at the operator's station for LA115, LA125, LA135 models.

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

Identifies and explains the controls located at the operator's station for LA145, LA155, LA165, LA175 models.

Operating

Daily Operating Checklist

A checklist of essential tasks before operating the machine.

Adjusting Cutting Height

Instructions for setting the mower deck cutting height for optimal lawn care.

Adjusting Mower Deck Level

Procedure to adjust the mower deck for a level cut and optimal performance.

Testing Safety Systems

Procedures to test safety systems like park brake and seat switch for proper function.

Starting the Engine

Step-by-step guide for safely starting the engine under various conditions.

Stopping the Engine

Recommended procedure for safely stopping the engine to prevent damage or hazards.

Engaging and Disengaging Mower

Instructions for engaging and disengaging the mower blades for operation.

Using Cruise Control

How to engage and disengage cruise control for maintaining travel speed.

Moving Machine by Hand

Procedure for safely moving the machine by hand when the engine is off.

Using Weights

Guidelines for using weights to improve stability during operation on slopes or with attachments.

Service Intervals

Choosing Mower Blades

Information on different mower blade types and their optimal uses.

Servicing Your Machine

General guidelines and timetables for routine machine maintenance.

Service Lubrication

Lubricating Front Axle

Instructions for lubricating the front axle, wheel spindles, and pivot points.

Service Engine

Checking Engine Oil Level

Procedure to check the engine oil level to prevent serious engine problems.

Changing Engine Oil and Filter

Step-by-step guide for changing the engine oil and filter for optimal engine health.

Cleaning Air Intake Screen and Engine Fins

Instructions for cleaning air intake screens and engine fins to prevent overheating.

Checking and Cleaning Air Cleaner Elements (LA105 and LA115)

Procedures for checking and cleaning air cleaner elements for specific models.

Checking and Cleaning Air Cleaner Elements (LA125)

Procedures for checking and cleaning air cleaner elements for LA125 models.

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

Procedures for checking and cleaning air cleaner elements for specific models.

Service Transmission

Checking Transmission

Information on checking the sealed transmission component for any issues.

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

Instructions for removing and installing the mower drive belt on specific deck sizes.

Service Mower

Removing Mower Deck

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

Installing Mower Deck

Step-by-step guide for safely installing the mower deck onto the machine.

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

Instructions for replacing the mower drive belt on 107 cm (42 in.) decks.

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

Procedure for adjusting spindle brakes on 107 cm (42 in.) mower decks.

Checking for Bent Mower Blades

How to check mower blades for damage or bending.

Service Electrical

Servicing Mower Blades

General guidelines for servicing mower blades, including removal and installation.

Balancing Blades

Procedure to check and balance mower blades for proper operation.

Service the Battery Safely

Safety precautions for servicing the battery, including handling hazards.

Removing and Installing the Battery

Step-by-step instructions for safely removing and installing the battery.

Service Miscellaneous

Using Proper Fuel

Guidelines on selecting and using the correct fuel for optimal engine performance.

Filling Fuel Tank

Safe procedures for filling the fuel tank to prevent hazards and fuel contamination.

Cleaning Plastic Surfaces

Proper methods for cleaning and maintaining plastic surfaces to avoid damage.

Removing and Installing Hood

Instructions for safely removing and installing the machine's hood.

Checking Tire Pressure

How to check and maintain correct tire pressure for safe operation.

Removing and Installing Front Wheel Assembly

Steps for safely removing and installing the front wheel assembly.

Troubleshooting

Engine

Common engine problems and their potential causes and checks.

Electrical

Common electrical issues and their potential causes and checks.

Tractor

Common tractor performance issues and their potential causes and checks.

Mower

Common mower performance issues and their potential causes and checks.

Storage

Storing Safety

Safety precautions to take when storing the machine to prevent hazards.

Preparing Machine for Storage

Steps to prepare the machine for storage, including cleaning and repairs.

Preparing Fuel and Engine For Storage

Procedures for preparing the fuel and engine for long-term storage.

Specifications

Engine

Technical specifications related to the engine, including clearances and torque.

Gear Model LA105

Detailed technical specifications for the LA105 Gear model.

Automatic Model LA115

Detailed technical specifications for the Automatic LA115 model.

Dimensions

Physical dimensions of the machine, including height, length, and width.

Tires

Specifications for tire sizes and pressure for various models.

Mower Deck - 107 cm (42 in.)

Specifications for the 107 cm (42 in.) mower deck.

Warranty

Product Warranty

Information on the product warranty, coverage, and responsibilities.

Owners Warranty Responsibilities

Outlines the owner's responsibilities for maintaining warranty coverage.

Emissions Warranty Parts List

Lists parts covered under the emissions control system warranty.

Getting Quality Service

Parts

Information on obtaining John Deere quality parts and lubricants from dealers.

Order Service Parts Online

Instructions on how to order service parts online through the JDParts website.

Part Numbers

A list of part numbers for common replacement items like filters and belts.

Service Record

Record Service Dates

A log to record service dates for oil changes, filter replacements, and other maintenance.

john deer LA115 Specifications

General IconGeneral
Engine Power19 hp
TransmissionHydrostatic
Cylinders1
Drive2WD
Blades2
Fuel TypeGasoline
Cutting Width42 in
Wheelbase48.9 in
Turning Radius18 in. (45.7 cm)

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