KTM 250 SX 2022 User Manual (English)

Questions and Answers:

B
Brenda KnightJul 30, 2025
Why does my KTM 250 SX 2022 engine overheat?
- Z
  Zachary BenderJul 30, 2025
  Several issues can cause your KTM Motorcycle engine to overheat. It could be due to insufficient coolant, so check for leaks and coolant levels. Overheating can also occur if there's not enough airflow when stationary, so switch off the engine in these situations. Dirty radiator fins can also cause overheating, so clean them. Other potential causes include foam in the cooling system (drain and refill the coolant), a damaged cylinder head or gasket (inspect these parts), or a bent radiator hose (replace the hose).
J
John FranklinAug 7, 2025
What to do if my KTM 250 SX 2022 Motorcycle engine stalls or is popping into the carburetor?
- R
  Robert MunozAug 7, 2025
  If your KTM Motorcycle engine stalls or pops in the carburetor, it might be due to a lack of fuel. Ensure the fuel tap is in the ON position and refuel if necessary. Another cause could be the engine taking in bad air, so check the intake flange and carburetor for tightness. Also, inspect the connector or ignition coil; if they are loose or oxidized, clean the connector and treat it with contact spray.
J
Jacob AbbottAug 13, 2025
Why gear oil exits at the vent hose in my KTM 250 SX 2022?
- D
  dominguezamandaAug 13, 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 to ensure it is at the correct level.
A
Amanda CunninghamAug 21, 2025
What does it mean if my KTM Motorcycle emits white smoke?
- T
  Thomas FordAug 21, 2025
  White smoke emission (steam in exhaust gas) from your KTM Motorcycle can be caused by a damaged cylinder head or cylinder head gasket. Check these parts for damage.

KTM 250 SX 2022 Specifications

General

Displacement	249 cc
Bore/Stroke	66.4 mm / 72 mm
Starter	Kickstarter
Transmission	5-speed
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Fuel Tank Capacity	7.5 liters
Ground Clearance	375 mm
Seat Height	950 mm
Weight (without fuel)	98 kg
Ignition	Kokusan
Final Drive	Chain
Front Tire	80/100-21"
Rear Tire	110/90-19"
Engine Type	2-stroke
Frame	Central tube frame made of chrome molybdenum steel
Front Brake	Disc brake
Rear Brake	Disc brake
Fuel System	Mikuni TMX38 carburetor
Wheelbase	1485 mm

Summary

Safety Advice

Intended Use and Misuse

Defines the intended application of the vehicle and clarifies what constitutes misuse.

Degrees of Risk and Symbols

Explains different levels of danger and their corresponding warning symbols.

Safe Operation

Provides essential guidelines and warnings for safe operation of the vehicle.

Protective Clothing

Emphasizes the importance of wearing appropriate protective clothing.

Work Rules

Outlines general rules and procedures for performing work on the motorcycle.

Important Notes

Controls

Clutch Lever

Describes the clutch lever, its operation, and self-adjustment.

Hand Brake Lever

Details the hand brake lever and its function for the front brake.

Throttle Grip

Describes the throttle grip and its operation.

Stop Button

Explains the function and states of the engine stop button.

Fuel Tap

Explains the function and operating states of the fuel tap.

Choke

Describes the choke lever's function for cold engine starting.

Preparing for Use

First Use Advice

Provides essential advice and safety checks before the first ride.

Engine Running-In

Offers guidelines and performance limits for the engine's break-in period.

Difficult Operating Conditions

Instructions for preparing the vehicle for challenging riding conditions.

Riding Instructions

Pre-Ride Checks

Lists essential checks and maintenance measures before each trip.

Starting the Engine

Details safety precautions and procedures for starting the engine.

Starting Off

Instructions for setting off from a standstill and initial riding.

Shifting and Riding

Guidance on gear shifting techniques and general riding practices.

Applying Brakes

Techniques and warnings related to effective brake application.

Stopping and Parking

Instructions for safely stopping, parking, and securing the vehicle.

Refueling Procedure

Details the correct and safe procedure for refueling the vehicle.

Service Schedule

Required Work Schedule

Lists essential maintenance tasks and their required intervals.

Recommended Work

Lists recommended maintenance tasks beyond essential requirements.

Tuning the Chassis

Chassis Setting with Rider Weight

Guidance on adjusting chassis settings based on rider weight.

Shock Absorber Compression Damping

Explanation of high-speed and low-speed compression damping.

Low-Speed Compression Damping

Instructions for adjusting the low-speed compression damping.

High-Speed Compression Damping

Instructions for adjusting the high-speed compression damping.

Rebound Damping Adjustment

Instructions for adjusting the rebound damping of the shock absorber.

Static Sag Check

Procedure to check the static sag of the shock absorber.

Riding Sag Check

Procedure to check the riding sag of the shock absorber.

Spring Preload Adjustment

Instructions for adjusting the spring preload of the shock absorber.

Riding Sag Adjustment

Instructions for adjusting the riding sag of the shock absorber.

Fork Air Pressure Adjustment

Instructions for adjusting the air pressure in the front fork.

Fork Compression Damping

Instructions for adjusting the compression damping of the fork.

Fork Rebound Damping

Instructions for adjusting the rebound damping of the fork.

Service Work on the Chassis

Removing Fork Legs

Step-by-step instructions for removing the front fork legs.

Installing Fork Legs

Step-by-step instructions for installing the front fork legs.

Checking Steering Head Bearing Play

Procedure to check for play in the steering head bearings.

Adjusting Steering Head Bearing Play

Instructions for adjusting the steering head bearing play.

Removing Shock Absorber

Instructions for removing the rear shock absorber.

Installing Shock Absorber

Instructions for installing the rear shock absorber.

Cleaning Air Filter and Box

Procedure for cleaning the air filter element and air filter box.

Removing Fuel Tank

Instructions for safely removing the fuel tank.

Installing Fuel Tank

Instructions for safely installing the fuel tank.

Cleaning the Chain

Instructions for cleaning the drive chain.

Checking Chain Tension

Adjusting Chain Tension

Checking Chain, Sprockets, Guide

Adjusting Clutch Lever Position

Checking Hydraulic Clutch Fluid Level

Changing Hydraulic Clutch Fluid

Brake System

Hand Brake Lever Free Travel

Hand Brake Lever Position Adjustment

Brake Disc Check

Front Brake Fluid Level Check

Adding Front Brake Fluid

Front Brake Lining Check

Changing Front Brake Linings

Foot Brake Lever Free Travel

Foot Brake Lever Position Adjustment

Rear Brake Fluid Level Check

Adding Rear Brake Fluid

Rear Brake Lining Check

Changing Rear Brake Linings

Wheels and Tires

Removing Front Wheel

Installing Front Wheel

Removing Rear Wheel

Installing Rear Wheel

Cooling System

Antifreeze and Coolant Level Check

Coolant Level Check

Tuning the Engine

Carburetor Tuning

Information on tuning the carburetor for optimal performance.

Carburetor Idle Control

Adjusting Idle Speed

Service Work on the Engine

Checking Gear Oil Level

Changing Gear Oil

Adding Gear Oil

Cleaning and Care

Cleaning the Motorcycle

Troubleshooting

Engine Start Issues

Addresses common faults and solutions when the engine does not start.

Idle Speed Issues

Addresses faults and solutions related to the engine's idle speed.

Acceleration and Power Issues

Addresses faults and solutions for lack of acceleration or power.

Engine Stalling/Popping

Addresses issues causing the engine to stall or pop.

Engine Overheating

Addresses causes and solutions for engine overheating.

Exhaust Smoke and Oil Leaks

Addresses issues related to exhaust smoke and oil leaks.

Technical Data

Engine Specifications

Engine Tightening Torques

Lists critical torque values for various engine components.

Carburetor Specifications

Fork Data

Shock Absorber Data

Chassis Tightening Torques

Lists critical torque values for chassis component fasteners.

Substances

Brake Fluid Recommendations

Coolant Recommendations

Engine Oil Recommendations

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