KTM 250 SX 2024 User Manual (English)

Other manuals for KTM 250 SX 2024

Questions and Answers:

C
Crystal SmithJul 30, 2025
Why KTM 250 SX 2024 Motorcycle engine turns but does not start?
- S
  Sean DonaldsonJul 30, 2025
  If the engine of your KTM Motorcycle turns but does not start, several factors could be responsible. It could be due to an operating error, so ensure you're following the correct start procedure. Check that the quick release coupling is properly joined. Also, verify that the fuel tank breather isn't blocked, ensuring proper fuel supply. Inspect the spark plug; if it's sooty or wet, clean and dry it, or replace it if needed. Finally, make sure the spark plug gap is correctly adjusted to 0.60 mm (0.0236 in).
A
Alexandra JenningsAug 6, 2025
How to troubleshoot a discharged 12-V battery on KTM 250 SX 2024 Motorcycle?
- J
  James FreemanAug 6, 2025
  If the 12-V battery of your KTM Motorcycle is discharged, it could be because the alternator is not charging it properly. Check the charging voltage and the alternator itself. Alternatively, there might be an unwanted electrical power consumer draining the battery; in this case, check the open-circuit current.
N
Nicole CainAug 13, 2025
What to do if the malfunction indicator lamp lights up on my KTM 250 SX 2024?
- M
  Mary RobersonAug 13, 2025
  If the malfunction indicator lamp lights up or flashes on your KTM Motorcycle, it indicates a malfunction in the electronic fuel injection. You should inspect the wiring for any damage and check the electrical plug-in connectors for corrosion or damage. It is also recommended to read out the fault memory using the KTM diagnostics tool.
J
John CollinsAug 21, 2025
What to do if gear oil exits at the vent hose of my KTM 250 SX 2024 Motorcycle?
- H
  henry19Aug 22, 2025
  If gear oil is exiting at the vent hose of your KTM Motorcycle, it's likely because too much gear oil was added. Check the gear oil level.

KTM 250 SX 2024 Specifications

General

Engine Type	1-cylinder, 2-stroke engine
Displacement	249 cc
Bore x Stroke	66.4 mm x 72 mm
Starter	Electric starter
Transmission	5-speed
Fuel System	Keihin PWK 38S AG
Cooling	Liquid cooled
Front Suspension	WP XACT-USD, Ø 48 mm
Front Brake	Disc brake
Rear Brake	Disc brake
Front Tire	80/100-21
Rear Tire	110/90-19
Ground Clearance	375 mm
Seat Height	950 mm
Fuel Tank Capacity	7.5 liters
Rear Suspension	WP XACT with linkage
Fuel System Alternative	Not applicable
Frame Design	Central double-cradle-type frame

Summary

Means of Representation

Symbols Used in Manual

Explains the meaning of various symbols used throughout the manual for clarity and safety.

Typographical Formats Explained

Defines typographical conventions like proprietary names, protected names, and brand names.

Safety Advice and Warnings

Intended Use Definition

Specifies the designed purpose and operational environment for SX and XC models.

Risk and Symbol Definitions

Details the meaning of danger, warning, caution, and note symbols to indicate risk levels.

Safe Operation Guidelines

Covers essential practices for safe riding, including avoiding hazards like poisoning and burns.

Vehicle Overview and Identification

Front Left View of Motorcycle

Identifies key components visible from the front left side of the motorcycle.

Rear Right View of Motorcycle

Identifies key components visible from the rear right side of the motorcycle.

Serial Number Locations

Vehicle Identification Number (VIN)

Shows the location of the unique Vehicle Identification Number stamped on the steering head.

Engine Number Location

Indicates where the engine number is embossed on the engine casing.

Motorcycle Controls and Operation

Clutch Lever Operation

Describes the clutch lever's function, hydraulic activation, and self-adjustment.

Hand Brake Lever Function

Explains the location and engagement of the front brake via the hand brake lever.

Opening the Fuel Tank Filler Cap

Provides instructions and safety warnings for accessing the fuel tank.

Foot Brake Lever Usage

Details the location and function of the foot brake lever for activating the rear brake.

Preparing the Motorcycle for Use

First Use Preparation Advice

Essential checks and advice before riding the motorcycle for the first time.

Engine Running-In Procedure

Guidelines for breaking in the engine to ensure longevity and optimal performance.

Preparing for Difficult Conditions

Advice for operating the vehicle in challenging environments like sand or mud.

Sand Riding Preparation

Specific preparations for riding the motorcycle on dry sand surfaces.

Riding Instructions and Safety

Pre-Ride Checks and Maintenance

Mandatory checks and maintenance tasks to perform before every ride.

Vehicle Starting Procedure

Step-by-step instructions for safely starting the motorcycle's engine.

Braking Techniques and Warnings

Guidance on proper braking, including risks of overheating and improper application.

Refueling Safety and Instructions

Crucial safety warnings and procedures for refueling the motorcycle.

Service Schedule and Maintenance

General Service Information

Provides additional notes and context regarding the service schedule.

Regular Service Schedule

Details the recommended maintenance intervals and tasks for optimal vehicle performance.

Chassis Tuning and Adjustments

Basic Chassis Setting with Rider Weight

Adjusting suspension components to match the rider's weight for optimal handling.

Shock Absorber Rebound Damping Adjustment

Procedure for adjusting the shock absorber's rebound damping characteristics.

Shock Absorber Spring Preload Adjustment

Instructions on how to adjust the spring preload for ride height and handling.

Fork Air Pressure Adjustment (SX Models)

Guide for adjusting the air pressure in the front fork for SX model variants.

Fork Compression Damping Adjustment

Details on how to adjust the compression damping settings of the front fork.

Fork Rebound Damping Adjustment

Instructions for adjusting the rebound damping settings of the front fork.

Chassis Service and Maintenance

Raising Motorcycle with Lift Stand

Procedure for safely lifting the motorcycle using a dedicated lift stand.

Bleeding Fork Legs

Step-by-step guide on how to bleed excess pressure from the fork legs.

Removing Lower Triple Clamp

Detailed instructions for the safe removal of the lower triple clamp assembly.

Removing Shock Absorber

Procedure for safely removing the rear shock absorber from the motorcycle.

Installing Air Filter

Instructions for correctly mounting the clean air filter onto its support.

Checking Chain Tension

Method for checking the chain's tension and ensuring it is within specifications.

Adjusting Chain Tension

Steps for adjusting the chain tension and aligning the rear wheel.

Brake System Maintenance

Checking Hand Brake Lever Free Travel

Procedure to check for adequate free play in the hand brake lever.

Checking Front Brake Fluid Level

Guide for inspecting the brake fluid level in the front brake reservoir.

Adding Front Brake Fluid

Instructions and safety precautions for adding front brake fluid.

Changing Front Brake Linings

Detailed steps for replacing the brake linings on the front brake system.

Checking Rear Brake Fluid Level

Procedure to inspect the brake fluid level in the rear brake reservoir.

Checking Rear Brake Linings Security

Ensuring that the rear brake linings are correctly secured and in place.

Wheels and Tires Maintenance

Removing the Front Wheel

Step-by-step instructions for safely removing the front wheel.

Installing the Front Wheel

Procedure for correctly installing the front wheel onto the motorcycle.

Checking Tire Pressure

Guidance on checking and adjusting tire pressure for optimal performance and safety.

Checking Spoke Tension

Method for checking spoke tension using sound and ensuring correct torque.

Electrical System Maintenance

Removing the 12-V Battery

Instructions for safely disconnecting and removing the 12-V battery.

Charging the 12-V Battery

Guidelines and procedures for charging the 12-V battery correctly.

Changing the Main Fuse

Procedure for replacing the main fuse that protects the vehicle's electrical system.

Diagnostics Connector Information

Location and basic information regarding the vehicle's diagnostics connector.

Cooling System Maintenance

Checking Antifreeze and Coolant Level

Steps to check the antifreeze protection and the overall coolant level.

Refilling with Coolant

Procedure for refilling the cooling system with the correct coolant.

Engine Tuning and Adjustments

Changing Engine Mapping

How to alter the engine's performance characteristics using the combination switch.

Adjusting Throttle Cable Play

Procedure for adjusting the throttle cable to ensure proper play and response.

Adjusting Idle Speed

Instructions for setting the correct idle speed for optimal engine operation.

Engine Service and Maintenance

Changing the Fuel Screen

Instructions for replacing the fuel screen to maintain fuel system integrity.

Checking Gear Oil Level

Procedure for checking the gear oil level while the engine is cold.

Changing the Gear Oil

Steps and warnings for draining and refilling the engine's gear oil.

Cleaning and Care Procedures

Motorcycle Cleaning Guide

Comprehensive guide on how to clean the motorcycle safely and effectively.

Motorcycle Storage Guidelines

Long-Term Storage Procedures

Steps to prepare and store the motorcycle for extended periods.

Preparing for Use After Storage

Tasks required to bring the motorcycle back into operation after storage.

Technical Specifications Overview

Engine Specifications

Detailed technical data for the motorcycle's engine.

Engine Tightening Torques

Specific torque values for engine components during assembly and maintenance.

Chassis Specifications

Technical details related to the motorcycle's chassis, suspension, and brakes.

Chassis Tightening Torques

Torque specifications for various chassis components during maintenance.

Substances and Fluids

Brake Fluid Specifications

Details on approved brake fluid types, standards, and recommended suppliers.

Coolant Specifications

Information on recommended coolant types, antifreeze protection, and properties.

Engine Oil Specifications

Details on approved engine oil types, standards, and recommended suppliers.

Auxiliary Substances and Cleaners

Recommended Air Filter Cleaner

Lists recommended products for cleaning motorcycle air filters.

Recommended Chain Cleaner

Identifies recommended cleaning agents for the motorcycle chain.

Standards and Specifications

JASO T903 MA2 Standard Explanation

Explanation of the JASO T903 MA2 standard for motorcycle engine oils.

SAE Viscosity Classes

Definition of SAE viscosity classes used for classifying engine oils.

JASO FD Standard Explanation

Explanation of the JASO FD standard for 2-stroke engine oils.

Index of Special Terms

OBD Definition

Defines On-board diagnosis (OBD) as a vehicle monitoring system.

List of Abbreviations

Common Abbreviations Explained

Provides definitions for common abbreviations used in the manual.

List of Symbols and Indicators

Yellow and Orange Symbols

Explains symbols indicating error conditions and active driving aids.

Green and Blue Symbols

Defines symbols that provide informational feedback to the rider.

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