KTM 250 SX-F USA 2010 User Manual (English)

Questions and Answers:

L
lindsay12Aug 16, 2025
What to do if my KTM 250 SX-F USA 2010 engine turns but does not start?
- R
  Robert ByrdAug 16, 2025
  If your KTM Motorcycle engine turns but does not start, consider these potential causes: operating error, old fuel in the float chamber (if the motorcycle was out of use for a long time), a flooded engine, an oily or wet spark plug, an incorrect electrode distance on the spark plug, a defect in the ignition system, a short-circuit cable, oxidized plug connectors, or water in the carburetor. Go through the engine starting steps. Empty the carburetor float chamber if there is old fuel. Clean and dry the spark plug, adjusting or replacing it if needed. Adjust the plug gap to 0.7 mm (0.028 in). Check the wiring harness and electrical system for short circuits. Clean oxidized plug connectors with contact spray. Have the ignition system and carburetor components checked.
T
Timothy MatthewsAug 18, 2025
Why does my KTM Motorcycle engine have a lack of power?
- A
  Andrea DanielAug 18, 2025
  If your KTM Motorcycle engine has a lack of power, it could be due to an interrupted fuel feed, a severely contaminated air filter, a leaky or deformed exhaust system, too little glass fiber yarn filling in the main silencer, too little valve clearance, or a defective ignition system. Check the fuel tank breather and clean the fuel tap. Also, check and adjust the carburetor components. Clean the air filter. Inspect the exhaust system for damage and replace the glass fiber yarn filling if needed. Have the valve clearance adjusted and the ignition system checked.
R
Ryan HarrisAug 21, 2025
What to do if KTM Motorcycle engine does not speed up?
- A
  Anthony BarkerAug 22, 2025
  If the KTM Motorcycle engine does not speed up, potential causes include the carburetor running over due to a dirty or worn float needle, loose carburetor jets, or a defective ignition system. Have the carburetor components checked and adjusted. Also, have the ignition coil, CDI controller, spark plug connector, ignition pulse generator, and generator checked.
D
Danielle RobertsAug 25, 2025
How to fix KTM 250 SX-F USA 2010 Motorcycle when the engine cannot be cranked?
- K
  Kimberly MasonAug 25, 2025
  If your KTM Motorcycle engine cannot be cranked, possible causes include operating error, a discharged battery, a blown fuse, a defective starter relay, or a defective starter motor. Address operating errors by reviewing the engine starting steps. If the battery is discharged, recharge it and check the charging voltage, stall current, and generator. For a blown fuse, replace it. If the starter relay or motor is defective, have them checked.
B
Benjamin TorresAug 28, 2025
What causes KTM Motorcycle engine to overheat?
- A
  adamsmichaelAug 28, 2025
  If your KTM Motorcycle engine overheats, it could be due to low coolant level, insufficient airflow, very dirty radiator fins, foam formation in the cooling system, a bent radiator hose, a defective thermostat, or a defect in the radiator fan system. Check the cooling system for leaks and ensure the coolant level is correct. Switch off the engine when stationary to allow for better airflow. Clean the radiator fins. Have the coolant drained and refilled, the radiator hose changed, and the thermostat checked. Also, check the radiator fan fuse, the radiator fan, and the thermostat.
K
Kevin NguyenAug 30, 2025
How can I fix KTM Motorcycle engine when it has no idle?
- C
  Carl Hernandez Jr.Aug 31, 2025
  If your KTM Motorcycle engine has no idle, it could be caused by a blocked idling jet, distorted adjusting screws on the carburetor, a defective spark plug, or a defective ignition system. Have the carburetor components checked and adjusted. Adjust the idle speed on the carburetor. Change the spark plug. Have the ignition coil, CDI controller, spark plug connector, ignition pulse generator, and generator checked.
K
kevin62Sep 2, 2025
Why does my KTM 250 SX-F USA 2010 engine stall or pop back into the carburetor?
- D
  Deborah RussellSep 2, 2025
  If your KTM Motorcycle engine stalls or pops back into the carburetor, it may be due to a lack of fuel or an air leak in the intake system. For a lack of fuel, turn the fuel tap to the ON position and refuel. Check the rubber sleeves and carburetor for tightness to address any air leaks.
S
Susan MclaughlinSep 5, 2025
What causes high oil consumption in my KTM 250 SX-F USA 2010?
- J
  Julia WebsterSep 5, 2025
  High oil consumption in your KTM Motorcycle can be attributed to a bent engine vent hose, an engine oil level that is too high, engine oil that is too thin, or worn piston or cylinder. Ensure the vent hose is routed without bends, replacing it if necessary. Check and correct the engine oil level. Change the engine oil and oil filter, and clean the oil screen if the oil is too thin. Determine the mounting clearance of the piston/cylinder.
A
Anna RojasSep 9, 2025
Why is my KTM 250 SX-F USA 2010 Motorcycle battery discharged?
- J
  John BarkerSep 9, 2025
  If your KTM Motorcycle battery is discharged, it may be due to the battery not charging or an undesired power consumer. Have the charging voltage, charging current, and generator checked. Also, check the stall current.
D
desireejuarezSep 12, 2025
What to do if speedometer values are deleted on my KTM Motorcycle?
- L
  Lindsay CollinsSep 12, 2025
  If the speedometer values (time, stop watch, lap times) on your KTM Motorcycle are deleted, the battery in the speedometer is likely empty. Replace the battery in the speedometer.

KTM 250 SX-F USA 2010 Specifications

General

Displacement	249.5 cc
Bore x Stroke	78 mm x 52.3 mm
Compression Ratio	13.5:1
Transmission	5-speed
Fuel System	Electronic Fuel Injection
Rear Suspension	WP Monoshock
Front Brake	260 mm disc
Rear Brake	220 mm disc
Seat Height	950 mm
Fuel Tank Capacity	7.5 Liters
Ignition	Kokusan
Front Wheel	21 Inch
Rear Wheel	19 Inch
Fuel Capacity	7.5 Liters
Engine Type	Single-cylinder, 4-stroke
Front Suspension	WP 48 mm
Engine	Single-cylinder, four-stroke
Starter	Kickstarter
Frame	Central Tube Frame Made of Chrome Molybdenum Steel Tubing

Summary

Dear KTM Customer

Means of Representation

Symbols Used in Manual

Explains symbols used in the manual for clarity and safety.

Typographical Formats Used

Explains typographical and other formats used in the manual.

Important Information for Owners

Model Usage Definition (EXC-F/SIX DAYS)

Defines the intended use and restrictions for EXC-F and EXC-F SIX DAYS models.

Maintenance Importance and Guidelines

Explains the importance of maintenance for trouble-free operation and avoiding wear.

Warranty Information and Claims

Details warranty terms, service requirements, and voiding conditions.

Fuel, Oils, and Grease Specifications

Specifies the correct types of fuels, oils, and greases to use.

Approved Spare Parts and Accessories

Advises using only KTM-approved spare parts and accessories for safety.

Work Rules and Assembly Guidelines

Outlines rules for assembly and use of non-reusable parts and thread lock.

Motorcycle Transport Guidelines

Provides safety notes and guidelines for transporting the motorcycle.

Environmental Responsibility in Motorcycling

Emphasizes responsible riding and environmental consciousness.

Attention to Warning Labels

Stresses the importance of not removing warning labels for hazard recognition.

Understanding Risk Grades and Symbols

Defines danger, warning, and note symbols used in the manual.

Importance of the Owner's Manual

Highlights the necessity of reading the manual for operation, handling, and maintenance.

Vehicle Views and Component Identification

Left Front View of Motorcycle

Identifies key components from the left front perspective of the motorcycle.

Right Rear View of Motorcycle

Identifies key components from the right rear perspective of the motorcycle.

Location of Serial Numbers

Chassis Number Location

Shows the location of the chassis number on the motorcycle.

Type Label Location

Shows the location of the motorcycle's type label.

Key Number Location (EXC-F/SIX DAYS)

Shows where the key number is stamped on the key strap.

Engine Number Location

Shows the location of the engine number on the engine.

Fork Part Number Location

Shows where the fork part number is stamped on the fork stub.

Shock Absorber Part Number Location

Shows where the shock absorber part number is stamped.

Motorcycle Controls and Operation

Clutch Lever Operation

Describes the location and function of the clutch lever.

Hand Brake Lever Operation

Describes the location and function of the hand brake lever.

Short Circuit Button (XCF-W/SX-F)

Explains the function and states of the short circuit button.

Short Circuit Button (EXC-F/SIX DAYS)

Explains the function and states of the short circuit button.

Emergency OFF Switch (EXC-F AUS)

Details the function and states of the emergency OFF switch.

Electric Starter Button (EXC-F/SIX DAYS/XCF-W)

Explains the function and states of the electric starter button.

Electric Starter Button (EXC-F AUS)

Explains the function and states of the electric starter button.

Light Switch Operation (EXC-F/SIX DAYS)

Describes the function and states of the light switch.

Horn Button Operation (EXC-F/SIX DAYS)

Explains the function and states of the horn button.

Turn Signal Switch (EXC-F/SIX DAYS)

Describes the function and states of the turn signal switch.

Indicator Lamps Overview (EXC-F/SIX DAYS)

Explains the meaning of indicator lamps for high beam and turn signals.

Speedometer and Tripmaster Functions

Speedometer Overview

Provides an overview of the speedometer and its buttons.

Speedometer Activation and Test

Explains how to activate the speedometer and perform a display test.

Tripmaster Switch Functionality

Describes how to use the optional Tripmaster switch with the speedometer.

Setting Units: Kilometers or Miles

Details how to change the unit of measurement for the speedometer.

Setting the Motorcycle Clock

Provides instructions on how to set the clock on the speedometer.

Adjusting Speedometer Display Functions

Explains how to activate or deactivate various display modes.

Querying Lap Times

Describes how to view recorded lap times from the stopwatch.

Speedometer: Speed Display Mode

Explains how to display the current speed in Km/h or Mph.

Speedometer: Service Hours Display

Details how to view engine service hours for maintenance scheduling.

Speedometer: Clock Display Mode

Explains how to display the current time.

Speedometer: Lap Time Display Mode

Describes how to time and display lap times.

Speedometer: Odometer Display Mode

Explains how to view the total distance ridden (odometer).

Speedometer: Trip Master 1 Display

Details the Trip Master 1 function for measuring distances.

Speedometer: Trip Master 2 Display

Details the Trip Master 2 function, useful for road books.

Speedometer: Average Speed 1 Display

Shows average speed calculated using TR1 and S1.

Speedometer: Average Speed 2 Display

Shows average speed based on current speed and S2.

Speedometer: Stop Watch 1 Display

Details the Stop Watch 1 function for tracking journey time.

Speedometer: Stop Watch 2 Display

Details the Stop Watch 2 function for manual timing.

Fuel Tap Operation

Fuel Tap Operation (EXC-F/SIX DAYS/XCF-W)

Explains the function and states of the fuel tap.

Fuel Tap Operation (SX-F)

Explains the function and states of the fuel tap for SX-F models.

Opening the Fuel Filler Cap

Details the procedure for opening the fuel filler cap.

Closing the Fuel Filler Cap

Details the procedure for closing the fuel filler cap.

Choke Lever Operation (EXC-F EU/SIX DAYS)

Explains the choke lever function for cold starts.

Choke Lever Operation (XCF-W/SX-F/AUS)

Explains the choke lever function for cold starts.

Shift Lever Description

Describes the location and operation of the shift lever.

Foot Brake Lever Operation

Explains the location and function of the foot brake lever.

Kick Starter Operation

Describes the location and use of the kick starter.

Side Stand Operation (EXC-F/SIX DAYS/XCF-W)

Explains how to use the side stand and safety precautions.

Plug-in Stand Operation (SX-F)

Explains how to use the plug-in stand and safety precautions.

Steering Lock Functionality

Explains the function of the steering lock.

How to Lock the Steering

Provides step-by-step instructions for locking the steering.

How to Unlock the Steering

Provides step-by-step instructions for unlocking the steering.

General Tips for Initial Operation

Advice for First-Time Motorcycle Use

Offers crucial safety and operational advice before the first ride.

Pre-Ride Checks and Controls Familiarization

Advises on pre-delivery checks, controls familiarization, and lever adjustments.

Off-Road Riding Tips and Hand Grip

Provides tips for off-road riding and proper handlebar grip.

Baggage Handling and Weight Distribution

Advises on securing baggage and its impact on weight distribution.

SX-F Luggage and Weight Limits

States that SX-F models should not transport luggage and lists weight limits.

Engine Running-In Procedure

Details the engine break-in process and performance limits.

Preparing for Arduous Riding Conditions

Advises on preparing for challenging riding conditions to prevent wear.

Types of Arduous Riding Conditions

Lists specific conditions considered arduous for the motorcycle.

Preparing for Riding on Dry Sand

Provides specific preparation steps for riding on dry sand.

Dry Sand Riding Preparation Details

Details sealing the air filter box and checking the radiator cap for dry sand.

Preparing for Riding on Wet Sand

Provides specific preparation steps for riding on wet sand.

Wet Sand Riding Preparation Details

Details air filter checks and waterproofing for wet sand riding.

Preparing for Wet and Muddy Surfaces

Provides specific preparation steps for wet and muddy conditions.

Wet/Muddy Surface Riding Preparation Details

Details air filter waterproofing and carburetor adjustments for wet/muddy conditions.

Preparing for High Temp & Slow Speed Rides

Provides preparation for riding in high temperatures and slow speeds.

Preparing for Low Temp & Snow Rides

Provides preparation for riding in low temperatures or snow.

Riding Instructions and Safety

Pre-Ride Checks for Safe Operation

Lists essential checks to ensure the motorcycle is safe before riding.

Engine Starting Procedures

Details the process for starting the motorcycle engine.

Initial Startup Steps After Engine Start

Covers initial steps after the engine starts, including lights and side stand.

Gear Shifting and Riding Techniques

Explains gear shifting, riding techniques, and handling warnings.

Braking Procedures and Safety

Provides instructions on proper braking techniques and safety warnings.

Stopping and Parking the Motorcycle

Details safe procedures for stopping and parking the motorcycle.

Fueling Procedures and Safety Precautions

Explains safe refueling practices and fuel handling warnings.

Fuel Tank Capacity and Refueling Guidelines

Details fuel tank capacity and refueling measurements.

Service Schedule (EXC-F/SIX DAYS/XCF-W)

Workshop Maintenance Tasks Schedule

Outlines essential maintenance tasks to be performed by an authorized workshop.

Additional Workshop Maintenance Services

Lists optional maintenance services recommended for the workshop.

Service Schedule (SX-F)

SX-F Workshop Maintenance Tasks

Outlines essential maintenance tasks for SX-F models by authorized workshops.

SX-F Additional Workshop Maintenance Services

Lists optional maintenance services for SX-F models recommended for workshops.

Rider Maintenance Schedule

Rider Performed Maintenance Checks

Lists essential checks and maintenance tasks the rider can perform.

Chassis and Engine Maintenance Procedures

Jacking Up the Motorcycle Safely

Provides instructions and safety notes for jacking up the motorcycle.

Removing Motorcycle from Work Stand

Details the procedure for safely removing the motorcycle from a work stand.

Basic Suspension Setting Adjustment

Explains how to adjust suspension based on rider weight.

Shock Absorber Compression Damping Overview

Introduces compression damping adjustment for shock absorbers.

Adjusting Shock Absorber High-Speed Compression

Guides on adjusting the high-speed compression damping of the shock absorber.

Adjusting Shock Absorber Low-Speed Compression

Guides on adjusting the low-speed compression damping of the shock absorber.

Adjusting Shock Absorber Rebound Damping

Guides on adjusting the rebound damping of the shock absorber.

Measuring Unloaded Rear Wheel Sag

Explains how to measure rear wheel sag when the motorcycle is unloaded.

Checking Static Sag of Shock Absorber

Details how to check the static sag of the shock absorber.

Checking Riding Sag of Shock Absorber

Details how to check the riding sag of the shock absorber.

Adjusting Shock Absorber Spring Preload

Guides on adjusting the spring preload of the shock absorber.

Adjusting Motorcycle Riding Sag

Guides on adjusting the riding sag by changing spring preload or spring rate.

Removing the Shock Absorber

Provides steps for safely removing the shock absorber.

Installing the Shock Absorber

Provides steps for safely installing the shock absorber.

Checking Basic Fork Settings

Offers guidance on checking the basic fork settings.

Adjusting Fork Compression Damping

Explains how to adjust the hydraulic compression damping of the fork.

Fork Compression Damping Adjustment Details

Details compression damping adjustments for different fork types.

Adjusting Fork Rebound Damping

Guides on adjusting the hydraulic rebound damping of the fork.

Fork Rebound Damping Adjustment Details

Details rebound damping adjustments for different fork types.

Adjusting Fork Spring Preload (EXC-F/SIX DAYS/XCF-W)

Guides on adjusting the spring preload for specific fork models.

Bleeding Fork Legs

Explains the procedure for bleeding the fork legs.

Cleaning Fork Leg Dust Boots

Details how to clean the fork leg dust boots to prevent seal damage.

Loosening Fork Protectors

Explains how to loosen and remove fork protectors.

Positioning Fork Protectors

Guides on correctly positioning and installing fork protectors.

Checking Steering Head Bearing Play

Explains how to check for play in the steering head bearing.

Adjusting Steering Head Bearing Play (EXC-F/AUS/XCF-W)

Guides on adjusting steering head bearing play for specific models.

Steering Head Bearing Adjustment Details (EXC-F/AUS/XCF-W)

Provides details for adjusting steering head bearing play.

Adjusting Steering Head Bearing Play (SX-F/SIX DAYS EU)

Guides on adjusting steering head bearing play for SX-F and SIX DAYS EU models.

Removing the Front Fork Legs

Provides steps for safely removing the front fork legs.

Front Fork Leg Removal Details

Details fork leg removal for different model series.

Installing the Front Fork Legs

Provides steps for safely installing the front fork legs.

Front Fork Leg Installation Details

Details fork leg installation and tightening torques for various models.

Removing Fork Protectors

Guides on removing fork protectors.

Installing Fork Protectors

Guides on installing fork protectors.

Removing the Front Fender

Provides steps for removing the front fender.

Installing the Front Fender

Guides on installing the front fender.

Removing Headlight Mask and Headlight

Details steps for removing the headlight mask and headlight assembly.

Refitting Headlight Mask and Headlight

Guides on refitting the headlight mask and headlight assembly.

Removing Start Number Plate (SX-F)

Provides steps for removing the start number plate on SX-F models.

Installing Start Number Plate (SX-F)

Guides on installing the start number plate on SX-F models.

Handlebar Mounting Positions

Explains the different mounting positions for handlebar supports.

Adjusting Handlebar Position

Guides on adjusting the handlebar position for optimal ergonomics.

Handlebar Position Adjustment Details

Provides details on positioning handlebars and tightening clamps.

Checking Throttle Cable Routing

Explains how to check the correct routing of throttle cables.

Checking Throttle Cable Play

Details how to check and measure the play in the throttle cable.

Adjusting Throttle Cable Play

Guides on adjusting the throttle cable play.

Checking Chain for Dirt Accumulation

Explains how to check the chain for dirt accumulation.

Cleaning the Drive Chain

Provides instructions on how to clean the drive chain.

Checking Chain Tension

Explains how to check the drive chain tension.

Checking Chain Tension During Rear Wheel Fitment

Details how to check chain tension when fitting the rear wheel.

Checking Sprocket Wear

Guides on checking the rear and engine sprockets for wear.

Drive Chain Tension Adjustment Details

Provides details for adjusting chain tension and rear wheel alignment.

Adjusting Chain Tension After Checking

Guides on adjusting chain tension after a check.

Adjusting Chain Tension During Rear Wheel Fitment

Details how to adjust chain tension when fitting the rear wheel.

Chain Tension Adjustment During Rear Wheel Fitment

Provides details for adjusting chain tension during rear wheel fitment.

Adjusting Chain Guide (EXC-F/SIX DAYS/XCF-W)

Guides on adjusting the chain guide for specific models.

Adjusting Chain Guide (SX-F)

Guides on adjusting the chain guide for SX-F models.

Checking Brake Disc Wear Limit

Explains how to check brake disc thickness and for damage.

Checking Hand Brake Lever Free Travel

Details how to check the free travel of the hand brake lever.

Hand Brake Lever Free Travel Check Details

Provides specific measurements for hand brake lever free travel.

Adjusting Hand Brake Lever Position (XCF-W/SX-F)

Guides on adjusting the basic position of the hand brake lever.

Adjusting Hand Brake Lever Free Travel (EXC-F/SIX DAYS)

Guides on adjusting the free travel of the hand brake lever.

Checking Front Brake Fluid Level

Explains how to check the brake fluid level in the front brake reservoir.

Front Brake Fluid Level Check Procedure

Details how to check the front brake fluid level and add fluid if needed.

Topping Up Front Brake Fluid

Provides instructions for topping up the front brake fluid.

Checking Front Brake Linings

Explains how to check the thickness and condition of front brake linings.

Changing Front Brake Linings

Guides on changing the front brake linings.

Front Brake Lining Replacement Procedure

Details steps for replacing front brake linings and checking fluid levels.

Checking Foot Brake Lever Free Travel

Details how to check the free travel of the foot brake lever.

Adjusting Foot Brake Lever Position

Guides on adjusting the basic position of the foot brake lever.

Checking Rear Brake Fluid Level

Explains how to check the rear brake fluid level.

Rear Brake Fluid Level Check Procedure

Details checking the rear brake fluid level and adding fluid.

Adding Brake Fluid to Rear Brake Circuit

Provides instructions for adding brake fluid to the rear brake circuit.

Checking Rear Brake Linings

Explains how to check the thickness and condition of rear brake linings.

Rear Brake Lining Replacement Procedure

Details steps for replacing rear brake linings.

Removing the Front Wheel

Provides steps for safely removing the front wheel.

Front Wheel Removal Details

Details removing the front wheel and spacers.

Installing the Front Wheel

Provides steps for safely installing the front wheel.

Front Wheel Installation Details

Details installing the front wheel, tightening screws, and aligning fork legs.

Removing the Rear Wheel

Provides steps for safely removing the rear wheel.

Rear Wheel Removal Details

Details removing the rear wheel, chain, and spacers.

Installing the Rear Wheel

Provides steps for safely installing the rear wheel.

Checking Tire Condition and Tread Depth

Explains how to check tire condition, tread depth, and age.

Checking Tire Air Pressure

Details how to check and correct tire air pressure.

Checking Spoke Tension and Torque

Explains how to check spoke tension and torque.

Removing the Battery (EXC-F/SIX DAYS/XCF-W)

Guides on safely removing the battery.

Installing the Battery (EXC-F/SIX DAYS/XCF-W)

Guides on safely installing the battery.

Recharging the Battery (EXC-F/SIX DAYS/XCF-W)

Provides instructions for recharging the battery.

Battery Recharging Guidelines and Safety

Offers guidelines and safety notes for battery recharging.

Removing a Fuse (EXC-F/SIX DAYS/XCF-W)

Guides on safely removing a fuse.

Replacing a Fuse (EXC-F/SIX DAYS/XCF-W)

Guides on safely replacing a fuse with the correct type.

Fuse Replacement Safety Warning

Warns against using incorrect fuses to prevent electrical system overload.

Adjusting Headlight Beam Width

Guides on adjusting the headlight beam for proper visibility.

Checking Headlight Adjustment

Explains how to check the headlight adjustment against a wall.

Headlight Adjustment Check Procedure

Details the procedure for checking headlight adjustment with rider and distance.

Removing the Motorcycle Seat

Provides steps for removing the seat.

Mounting the Motorcycle Seat

Guides on correctly mounting and securing the seat.

Dismounting the Fuel Tank

Provides steps for safely removing the fuel tank.

Fuel Tank Dismounting Procedure

Details fuel tank removal, including fuel hose and vent line.

Installing the Fuel Tank

Guides on installing the fuel tank.

Fuel Tank Installation Details

Details installing the fuel tank, vent hose, horn, and connecting fuel hose.

Cooling System Overview

Explains the function of the cooling system and its components.

Checking Anti-freeze and Coolant Level

Guides on checking anti-freeze protection and coolant level.

Checking Coolant Level in Radiator

Details how to check the coolant level in the radiator.

Coolant Level Check Procedure

Details checking the coolant level and adding coolant.

Draining the Coolant

Guides on draining the coolant from the system.

Refilling the Coolant

Guides on refilling the coolant and checking the level.

Main Silencer Glass Fiber Yarn Filling

Explains the role of glass fiber yarn in the main silencer.

Removing the Main Silencer

Provides steps for removing the main silencer.

Installing the Main Silencer

Guides on installing the main silencer.

Removing Air Filter Box Lid

Provides steps for removing the air filter box lid.

Installing Air Filter Box Lid

Guides on installing the air filter box lid.

Removing the Air Filter

Guides on safely removing the air filter.

Installing the Air Filter

Guides on correctly installing the air filter.

Cleaning the Air Filter

Provides instructions for cleaning the air filter.

Air Filter Cleaning Procedures and Tips

Details cleaning methods, cleaning liquids, and drying the air filter.

Adjusting Basic Clutch Lever Position

Guides on adjusting the clutch lever position for comfort.

Checking Hydraulic Clutch Fluid Level

Explains how to check the hydraulic clutch fluid level.

Hydraulic Clutch Fluid Level Check Procedure

Details checking the hydraulic clutch fluid level and adding fluid.

Changing Hydraulic Clutch Fluid

Guides on changing the hydraulic clutch fluid.

Checking Basic Shift Lever Position

Explains how to check the basic position of the shift lever.

Adjusting Basic Shift Lever Position

Guides on adjusting the basic position of the shift lever.

Carburetor Idle Settings Overview

Explains the importance of correct idle settings for engine performance.

Adjusting Carburetor Idle Speed and Mixture

Guides on adjusting idle speed and mixture.

Carburetor Idle Adjustment Details

Provides details on adjusting idle speed and troubleshooting idle issues.

Emptying Carburetor Float Chamber

Guides on emptying the carburetor float chamber.

Carburetor Float Chamber Emptying Procedure

Details emptying the float chamber and fuel draining.

Checking Engine Oil Level

Explains how to check the engine oil level.

Engine Oil and Filter Change Procedure

Guides on changing engine oil, oil filter, and cleaning oil screens.

Engine Oil/Filter Change and Oil Screen Cleaning

Details changing oil, filter, and cleaning oil screens.

Draining Engine Oil

Guides on draining the engine oil.

Engine Oil Draining Procedure

Details draining the engine oil and cleaning the drain plug.

Cleaning Oil Screens

Guides on cleaning the oil screens.

Oil Screen Cleaning Procedures

Details cleaning oil screens and mounting plugs.

Removing the Oil Filter

Guides on safely removing the oil filter.

Oil Filter Removal Procedure

Details removing the oil filter and cleaning parts.

Installing the Oil Filter

Guides on installing the oil filter.

Filling Up with Engine Oil

Guides on filling the engine with the correct amount of oil.

Adding Engine Oil to the Engine

Guides on adding engine oil and checking for leaks.

Troubleshooting Common Faults

Troubleshooting: Engine Not Cranking

Lists possible causes and actions for an engine that won't crank.

Troubleshooting: Engine Turns But Won't Start

Lists possible causes and actions for an engine that cranks but won't start.

Troubleshooting: Engine Has No Idle

Lists possible causes and actions for an engine lacking idle speed.

Troubleshooting: Engine Does Not Speed Up

Lists possible causes and actions for engine acceleration issues.

Troubleshooting: Engine Lacks Power

Lists possible causes and actions for reduced engine power.

Troubleshooting: Engine Stalls or Backfires

Lists possible causes and actions for engine stalling or backfiring.

Troubleshooting: Engine Overheating

Lists possible causes and actions for engine overheating.

Engine Overheating Troubleshooting Details

Provides further details on overheating causes like radiator hoses and fans.

Troubleshooting: High Oil Consumption

Lists possible causes and actions for high oil consumption.

Troubleshooting: Battery Discharged or Not Charging

Lists possible causes and actions for battery charging issues.

Troubleshooting: Speedometer Data Loss

Lists possible causes and actions for deleted speedometer values.

Motorcycle Cleaning Procedures

General Motorcycle Cleaning Guidelines

Provides guidelines and warnings for cleaning the motorcycle.

Motorcycle Cleaning Steps and Precautions

Details specific cleaning steps, drying, and post-cleaning checks.

Motorcycle Cleaning Final Touches

Covers cleaning metal parts, plastics, and electrical contacts.

Motorcycle Storage Guidelines

Motorcycle Storage Procedures

Provides comprehensive steps for storing the motorcycle for extended periods.

Putting Motorcycle into Operation After Storage

Details steps for preparing the motorcycle after storage.

Technical Engine Data

Engine Design Specifications

Details the engine design, displacement, bore, stroke, and control system.

Engine Compression Ratio

Specifies the engine's compression ratio.

Engine Idle Speed Specification

Specifies the engine's idle speed range.

Engine Control System Details

Describes the engine control system and valve actuation.

Engine Intake Valve Diameter

Specifies the diameter of the intake valves.

Engine Exhaust Valve Diameter

Specifies the diameter of the exhaust valves.

Engine Valve Clearance Specifications

Provides specifications for valve clearance at operating temperature.

Engine Crankshaft Bearing Type

Specifies the type of crankshaft bearings used.

Engine Conrod Bearing Type

Specifies the type of conrod bearings used.

Engine Piston Pin Bearing Type

Specifies the type of piston pin bearings used.

Engine Piston Material

Specifies the material of the pistons.

Engine Piston Ring Specifications

Specifies the type of piston rings.

Engine Lubrication System Type

Describes the engine lubrication system.

Engine Primary Transmission Ratio

Specifies the primary transmission ratio.

Clutch Type and Operation

Describes the clutch type and its activation.

Transmission Ratios (EXC-F/SIX DAYS/XCF-W)

Lists the gear ratios for specific models.

Transmission Ratios (SX-F)

Lists the gear ratios for SX-F models.

Generator Specifications (EXC-F/SIX DAYS/XCF-W)

Specifies the generator output for these models.

Generator Specifications (SX-F)

Notes the absence of a generator for SX-F models.

Ignition System Type

Describes the ignition system type and adjustment.

Spark Plug Type

Specifies the recommended spark plug type.

Spark Plug Electrode Gap Specification

Provides the correct spark plug electrode gap.

Engine Cooling System Type

Describes the engine cooling system.

Starting Aids (EXC-F/SIX DAYS/XCF-W)

Lists the starting aids available for these models.

Starting Aid (SX-F)

Notes that SX-F uses a kickstarter.

Engine Oil Capacity

Specifies the engine oil capacity and recommended type.

Coolant Capacity

Specifies the coolant capacity and types.

Engine Tightening Torques

Engine Oil Drain Plug Torque

Specifies the torque for the engine oil drain plug.

Engine Cylinder Head Screw Torque

Specifies the torque sequence and values for cylinder head screws.

Engine Sprocket Screw Torque

Specifies the torque for the engine sprocket screw.

Spark Plug Torque Specification

Provides the correct torque for installing the spark plug.

Engine Rotor Nut Torque

Specifies the torque for the engine rotor nut.

Inner Clutch Hub Nut Torque

Specifies the torque for the inner clutch hub nut.

Primary Gear Nut Torque

Specifies the torque for the primary gear nut.

Carburetor Specifications

Carburetor Specs (EXC-F/SIX DAYS)

Lists carburetor type, jetting, and settings for specific models.

Carburetor Specs (XCF-W)

Lists carburetor type, jetting, and settings for XCF-W models.

Carburetor Specs (SX-F)

Lists carburetor type, jetting, and settings for SX-F models.

Chassis Technical Data

Frame Material and Type

Describes the frame material and type.

Fork Specifications (EXC-F/SIX DAYS/XCF-W)

Lists fork model and travel for specific models.

Fork Specifications (SX-F)

Lists fork model and travel for SX-F models.

Suspension Travel Dimensions

Specifies front and rear suspension travel.

Fork Offset (SX-F)

Specifies the fork offset for SX-F models.

Fork Offset (250 EXC-F SIX DAYS EU)

Specifies the fork offset for this specific model.

Fork Offset (EXC-F EU/AUS/XCF-W ZA)

Specifies the fork offset for these models.

Shock Absorber Specs (EXC-F/SIX DAYS/XCF-W)

Lists shock absorber model and type.

Brake System Type

Describes the brake system type.

Brake Disc Diameters

Specifies front and rear brake disc diameters.

Brake Disc Wear Limit

Provides the wear limit for brake discs.

Tire Air Pressure Off-Road

Specifies recommended tire air pressure for off-road use.

Tire Air Pressure for Road Use

Specifies recommended tire air pressure for road use.

Final Drive Ratio (EXC-F/SIX DAYS)

Specifies the final drive ratio for these models.

Final Drive Ratio (XCF-W)

Specifies the final drive ratio for XCF-W models.

Final Drive Ratio (SX-F)

Specifies the final drive ratio for SX-F models.

Drive Chain Specifications

Specifies the drive chain size.

Available Rear Sprocket Sizes

Lists the available rear sprocket sizes.

Steering Head Angle Specification

Specifies the steering head angle.

Wheelbase Measurement

Specifies the wheelbase measurement.

Unloaded Seat Height

Specifies the unloaded seat height.

Unloaded Ground Clearance

Specifies the unloaded ground clearance.

Approximate Weight Without Fuel

Lists approximate weights without fuel for different models.

Maximum Permissible Front Axle Load

Specifies the maximum permissible front axle load.

Maximum Permissible Rear Axle Load

Specifies the maximum permissible rear axle load.

Maximum Permissible Overall Weight

Specifies the maximum permissible overall weight of the motorcycle.

Battery Specifications (EXC-F/SIX DAYS/XCF-W)

Lists battery type and specifications.

Lighting Equipment Specifications

Details specifications for headlights, turn signals, and other lights.

Lighting Equipment Details

Provides specifications for license plate lamp, parking light, and indicator lamps.

License Plate Lamp Specs (EXC-F/SIX DAYS)

Specifies the type and wattage of the license plate lamp.

Tire Specifications and Validity

Lists tire sizes and manufacturers for front and rear wheels.

Fuel Tank Capacity Specifications

Specifies total fuel tank capacity and recommended fuel type.

Approximate Fuel Reserve Capacity

Specifies the approximate fuel reserve capacity.

Front Fork Technical Data

Fork Specs (EXC-F/SIX DAYS/XCF-W)

Lists fork part number, damping, preload, spring rate, and oil capacity.

Spring Length with Preload Spacer

Specifies spring length based on rider weight.

Spring Rate Specifications

Lists spring rates based on rider weight.

Fork Length Specification

Specifies the overall fork length.

Fork Air Chamber Length

Specifies the air chamber length.

Fork Oil Type and Quantity

Specifies fork oil type and capacity per leg.

Fork Specs (SX-F EU)

Lists fork specs, damping, preload, spring rate, and gas pressure.

Fork Gas Pressure Specification

Specifies the gas pressure for the fork.

Fork Cartridge Oil Capacity

Specifies oil capacity per cartridge.

Fork Leg Oil Capacity (Without Cartridge)

Specifies oil capacity for fork legs without cartridges.

Fork Specs (SX-F USA)

Lists fork specs, damping, preload, spring rate, and gas pressure.

Fork Specs Details (SX-F USA)

Specifies fork length and oil capacity for SX-F USA.

Shock Absorber Technical Data

Shock Absorber Specs (EXC-F/SIX DAYS/XCF-W)

Lists shock absorber part number, damping, preload, spring rate, and sag.

Shock Absorber Spring Preload Specification

Specifies the standard spring preload adjustment.

Shock Absorber Spring Rate Specifications

Lists spring rates based on rider weight.

Static Sag Specification

Specifies the static sag measurement.

Riding Sag Specification

Specifies the riding sag measurement.

Shock Absorber Fitted Length

Specifies the fitted length of the shock absorber.

Shock Absorber Specs (SX-F)

Lists shock absorber part number, damping, preload, spring rate, and sag.

Chassis Tightening Torques

Front Wheel Spoke Nipple Torque

Specifies the torque for front wheel spoke nipples.

Front Brake Disc Screw Torque

Specifies the torque for front brake disc screws.

Handlebar Clamp Screw Torque

Specifies the torque for handlebar clamp screws.

Top Triple Clamp Screw Torque (SX-F/SIX DAYS EU)

Specifies torque for top triple clamp screws on specific models.

Top Triple Clamp Screw Torque (EXC-F EU/AUS/XCF-W ZA)

Specifies torque for top triple clamp screws on specific models.

Handlebar Support Screw Torque

Specifies the torque for handlebar support screws.

Bottom Shock Absorber Screw Torque

Specifies the torque for the bottom shock absorber screw.

Front Brake Caliper Screw Torque

Specifies the torque for front brake caliper screws.

Side Stand Fixing Screw Torque

Specifies the torque for side stand fixing screws.

Top Steering Stem Screw Torque (SX-F/SIX DAYS EU)

Specifies torque for top steering stem screws on specific models.

Top Steering Stem Screw Torque (EXC-F EU/AUS/XCF-W ZA)

Specifies torque for top steering stem screws on specific models.

Engine Attachment Bolt Torque

Specifies the torque for engine attachment bolts.

Swingarm Pivot Nut Torque

Specifies the torque for the swingarm pivot nut.

Front Wheel Spindle Screw Torque

Specifies the torque for the front wheel spindle screw.

Wiring Diagrams

Wiring Diagram (EXC-F EU/SIX DAYS)

Provides the wiring diagram for EXC-F EU and EXC-F SIX DAYS models.

Wiring Diagram (EXC-F AUS)

Provides the wiring diagram for EXC-F AUS models.

Wiring Diagram (XCF-W)

Provides the wiring diagram for XCF-W models.

Wiring Diagram (SX-F)

Provides the wiring diagram for SX-F models.

Wiring Diagram Components List

Lists and identifies electrical components used in the diagrams.

Wiring Diagram Cable Color Codes

Explains the color codes used for wiring in the diagrams.

Substances and Fluids Specifications

Brake Fluid Specifications

Specifies brake fluid types and recommendations.

Coolant Specifications and Mixture Ratio

Specifies coolant types, mixture ratios, and recommendations.

Pre-Mixed Coolant Specifications

Specifies specifications for ready-to-use coolant.

Engine Oil Specifications (SAE 10W/50)

Specifies engine oil standards and recommendations.

Fork Oil Specifications (SAE 5)

Specifies fork oil type and recommendations.

Super Unleaded Fuel Specifications

Specifies the type of unleaded fuel required.

Air Filter Cleaner Recommendations

Recommends specific cleaners for the air filter.

Chain Cleaner Recommendations

Recommends specific cleaners for the drive chain.

Metal, Rubber, Plastic Cleaning Materials

Recommends cleaning and polishing products.

Contact Spray Recommendations

Recommends contact spray for electrical connections.

Long-Life Grease Recommendations

Recommends specific long-life grease.

Motorcycle Cleaner Recommendations

Recommends specific motorcycle cleaners.

Off-Road Chain Spray Recommendations

Recommends specific chain sprays for off-road use.

Foam Air Filter Oil Recommendations

Recommends specific oil for foam air filters.

Universal Oil Spray Recommendations

Recommends specific universal oil spray.

Technical Standards Explained

JASO T903 MA Standard Explained

Explains the JASO T903 MA standard for motorcycle oils.

SAE Viscosity Classification Explained

Explains the SAE viscosity classification for oils.

Related product manuals

KTM 250 SX-F EU 2010

125 pages

KTM 250 XC?W USA 2010

140 pages

KTM 250 XCF-W USA 2010