Page 1
OWNER'S MANUAL 2021 250 EXC‑F 250 EXC‑F Six Days Art. no. 3214222en...
Page 3
KTM accepts no liability for delivery options, deviations from fig- ures and descriptions, misprints, and other errors. The models portrayed partly contain special equipment that does not belong to the regular scope of supply.
TABLE OF CONTENTS 6.15 Idle speed adjusting screw ....19 TABLE OF CONTENTS MEANS OF REPRESENTATION ...... 6 6.16 Shift lever ........20 Symbols used ........6 6.17 Foot brake lever ....... 20 Formats used........6 6.18 Side stand........20 SAFETY ADVICE..........
Page 5
TABLE OF CONTENTS Preparing the vehicle for riding on 11.16 Adjusting the handlebar position ..58 wet and muddy circuits ....39 12 SERVICE WORK ON THE CHASSIS....61 Preparing vehicle for high temperatures or slow riding ....39 12.1 Raising the motorcycle with the lift Preparing the vehicle for low stand ..........
Page 6
TABLE OF CONTENTS 12.38 Checking the chain, rear sprocket, 15.7 Installing the headlight mask with engine sprocket, and chain guide ..86 the headlight ......... 121 12.39 Checking the frame ...... 89 15.8 Changing the headlight bulb ... 121 12.40 Checking the link fork ....
All work marked with this symbol requires specialist knowledge and technical understanding. In the interest of your own safety, have these jobs performed by an authorized KTM workshop! Your motorcycle will be optimally cared for there by specially trained experts using the auxiliary tools required.
SAFETY ADVICE 2 Use definition – intended use This vehicle has been designed and built to withstand the normal stresses and strains of racing. This vehicle com- plies with the currently valid regulations and categories of the top international motorsports organizations. Info This vehicle is only authorized for operation on public roads in the homologated (restricted) version.
An appropriate driver's license is needed to ride the vehicle on public roads. Have malfunctions that impair safety promptly eliminated by an authorized KTM workshop. Adhere to the information and warning labels on the vehicle.
– Always wear protective clothing that is in good condition and meets the legal regulations. In the interest of your own safety, KTM recommends that you only operate the vehicle while wearing protective clothing. Work rules Unless specified otherwise, the ignition must be turned off during all work (models with ignition lock, models with remote key) or the engine must be at a standstill (models without ignition lock or remote key).
Manufacturer warranty, implied warranty The work prescribed in the service schedule must only be carried out in an authorized KTM workshop and con- firmed in the KTM Dealer.net, as otherwise all warranty claims will be void. Damage or secondary damage caused by tampering with and/or conversions on the vehicle are not covered by the manufacturer warranty.
VIEW OF VEHICLE 4 View of vehicle, front left (example) V01831-10 Clutch lever ( p. 15) Fuel tank filler cap Air filter box cover Side stand ( p. 20) Engine number ( p. 13) Shift lever ( p. 20)
4 VIEW OF VEHICLE View of vehicle, rear right (example) V01832-10 Switch-off button ( p. 15) Horn button ( p. 16) Light switch ( p. 16) Turn signal switch ( p. 16) Start button ( p. 17) Emergency OFF switch ( p.
SERIAL NUMBERS 5 Vehicle identification number The vehicle identification number is stamped on the right side of the steering head. 401945-10 Type label (All EU models) The Europe type label is fixed to the front of the steering head. The Canada type label is fixed to the front of the chest tube.
5 SERIAL NUMBERS Fork part number The fork part number is stamped on the inner side of the fork stub. 401947-10 Shock absorber article number Shock absorber article number is stamped on the top of the shock absorber above the adjusting ring towards the engine side. H02222-10...
CONTROLS 6 Clutch lever Clutch lever is fitted on the handlebar on the left. The clutch is activated hydraulically and adjusts itself automati- cally. A00345-10 Hand brake lever The hand brake lever is fitted on the right side of the handle- bar.
6 CONTROLS Horn button Horn button is fitted on the left side of the handlebar. Possible states • The horn button is in the basic position is pressed – The horn is operated in this • The horn button position. S01303-10 Light switch The light switch...
– The OBD has detected an error in the vehicle elec- tronics. Come safely to a halt, and contact an autho- rized KTM workshop. The fuel level warning lamp lights up yellow – The fuel level has reached the reserve mark.
6 CONTROLS 6.12 Opening fuel tank filler cap Danger Fire hazard Fuel is highly flammable. The fuel in the fuel tank expands when warm and can escape if overfilled. – Do not fuel the vehicle in the vicinity of open flames or lit cigarettes. –...
CONTROLS 6 6.14 Cold start button The cold start button is fitted to the bottom of the throttle valve body. The electronic fuel injection system extends the injection time if the engine is cold and the ambient temperature is low. To help the engine burn the increased fuel quantity, it must be supplied with additional oxygen by pushing the cold start button.
6 CONTROLS 6.16 Shift lever Shift lever is mounted on the left of the engine. 401950-10 The gear positions can be seen in the figure. The neutral or idle position is between the first and second gears. 401950-11 6.17 Foot brake lever Foot brake lever is located in front of the right footrest.
CONTROLS 6 The side stand is used for parking the motorcycle. Info When you are riding, side stand must be folded up and secured with rubber strap 401944-10 6.19 Steering lock Steering lock is fitted on the left side of the steering head. The steering lock is used to lock the steering.
6 CONTROLS 6.21 Unlocking the steering – Insert the key for the steering lock into the steering lock p. 21), turn it to the left, pull it out, and turn it to the right. Pull out the key for the steering lock. The handlebar can now be moved again.
COMBINATION INSTRUMENT 7 Combination instrument overview – Press the button to control different functions. – Press the button to control different functions. Info When the vehicle is delivered, only the SPEED/H and SPEED/ODO display modes are activated. V00799-01 Activation and test Activating combination instrument The combination instrument is activated when one of the buttons is pressed or an impulse comes from the wheel speed sensor.
7 COMBINATION INSTRUMENT – Wait 3 - 5 seconds. The settings are stored. Info If no button is pressed for 10–12 seconds, or if an impulse comes from the wheel speed sensor, the settings are automatically saved and the setup menu is closed.
COMBINATION INSTRUMENT 7 Setting the clock Condition The motorcycle is stationary. – Repeatedly press the button briefly until CLK appears at the bottom right of the display. – Press the button for 2–3 seconds. The hour display flashes. – Adjust the hour display with the button and/or button –...
7 COMBINATION INSTRUMENT Display mode SPEED (speed) – Repeatedly press the button briefly until SPEED appears on the left side of the display. The current speed is displayed in the SPEED display mode. The current speed can be displayed in Km/h or Mph. Info Make the setting according to the country.
COMBINATION INSTRUMENT 7 Info Repeatedly press the button briefly until the desired function is reached. If no button is pressed for 20 seconds, the settings are automatically saved. Briefly press Activates the flashing display and changes to the button the next display Press the but- No function for 2–3...
7 COMBINATION INSTRUMENT 7.11 Display mode SPEED/CLK (time) – Repeatedly press the button briefly until CLK appears at the bottom right of the display. The time is shown in display mode CLK. Press the but- The display changes to the Setup menu of the for 2–3 clock.
COMBINATION INSTRUMENT 7 Press the but- The stop watch and the lap time are reset. for 2–3 seconds. Briefly press Next display mode the button Press the but- Stops the clock. for 2–3 seconds. Briefly press Starts the stop watch or stop the current lap the button time measurement, stores it and the stop watch starts the next lap.
7 COMBINATION INSTRUMENT 7.16 Display mode SPEED/TR1 (trip master 1) – Repeatedly press the button briefly until TR1 appears at the top right of the display. TR1 (trip master 1) runs constantly and counts up to 999.9. You can use it to measure trips or the distance between refueling stops.
COMBINATION INSTRUMENT 7 Info The TR2 value can also be corrected manually during the journey with the button and the button If 999.9 is exceeded, the value of TR2 is automatically reset to 0.0. Press the but- Increases value of TR2. for 2–3 seconds.
7 COMBINATION INSTRUMENT Press the but- No function for 2–3 seconds. Press the but- No function for 2–3 seconds. Briefly press No function the button 7.21 Display mode SPEED/S1 (stop watch 1) – Repeatedly press the button briefly until S1 appears at the top right of the display.
COMBINATION INSTRUMENT 7 7.23 Table of functions Display Press the but- Briefly press Press the but- Briefly press Wait 3 - 5 Wait 10 - 12 for 2–3 the button for 2–3 the button seconds. seconds. seconds. seconds. Display mode The display Next display No function...
When using your motorcycle, remember that others may feel disturbed by excessive noise. – Make sure that the pre-sales inspection work has been carried out by an authorized KTM workshop. You will receive a delivery certificate when the vehicle is handed over.
8 PREPARING FOR USE – Adjust the basic position of the foot brake lever. p. 100) – Adjust the basic position of the shift lever. p. 134) – Get used to the handling characteristics of the motorcycle on a suitable surface before undertaking more chal- lenging trips.
– Riding at low temperatures and in snow. ( p. 39) Preparing the vehicle for riding on dry sand – Mount the air filter dust cover. Air filter dust cover (79006920000) Info Observe the fitting instructions for KTM PowerParts. 102136-01...
8 PREPARING FOR USE – Mount the air filter sand cover. Air filter sand cover (79006922000) Info Observe the fitting instructions for KTM PowerParts. 102138-01 – Clean the chain. Chain cleaner ( p. 159) – Mount the steel sprocket. –...
Preparing the vehicle for riding on wet and muddy circuits – Mount the air filter rain cover. Air filter rain cover (79006921000) Info Observe the fitting instructions for KTM PowerParts. 102137-01 – Mount the steel sprocket. – Clean the motorcycle. ( p.
9 RIDING INSTRUCTIONS Checks and maintenance measures when preparing for use Info Before every trip, check the condition of the vehicle and ensure that it is safe to operate. The vehicle must be in perfect technical condition when it is being operated. –...
RIDING INSTRUCTIONS 9 – Take the motorcycle off side stand and secure the side stand with rubber strap – Shift the transmission into neutral. – Turn the emergency OFF switch to the position Condition Ambient temperature: < 20 °C (< 68 °F) –...
Do not change into a low gear at high engine speed. Info If unusual noises occur while riding, stop immediately, switch off the engine and contact an authorized KTM workshop. First-gear is used for starting off and for steep inclines. –...
Danger of accidents A spongy pressure point on the front or rear brake reduces braking efficiency. – Check the brake system and do not continue riding until the problem is eliminated. (Your authorized KTM workshop will be glad to help.) Warning Danger of accidents Moisture and dirt impair the brake system.
In some countries and regions, the available fuel quality and cleanliness may not be sufficient. This will result in problems with the fuel system. – Refuel only with clean fuel that meets the specified standards. (Your authorized KTM workshop will be glad to help.)
Page 47
RIDING INSTRUCTIONS 9 Note Environmental hazard Improper handling of fuel is a danger to the environment. – Do not allow fuel to enter the groundwater, the soil, or the sewage system. – Switch off the engine. – Open fuel tank filler cap. ( p.
Different service intervals may apply in your country, depending on the local operating conditions. Individual service intervals and scopes may change in the course of technical developments. The most up-to-date service schedule can always be found on KTM Dealer.net. Your authorized KTM dealer will be happy to advise you.
Final check: Check the vehicle is roadworthy and take a test ride. ○ ● ● ● ● Read out the error memory after the test ride using the KTM diagnostics tool. ○ ● ● ● ● Make a service entry in KTM Dealer.net.
Page 50
10 SERVICE SCHEDULE every 12 months Every 135 operating hours Every 70 operating hours when used for motorsports After 20 operating hours After 10 operating hours every 48 months every 12 months ● ● Perform engine service including removing and installing the engine. (Change the spark plug and spark plug connector.
The shock absorber is filled with highly compressed nitrogen. – Please follow the description provided. (Your authorized KTM workshop will be glad to help.) Info The effect of the low-speed compression adjuster can be seen in slow to normal compression of the shock...
The shock absorber is filled with highly compressed nitrogen. – Please follow the description provided. (Your authorized KTM workshop will be glad to help.) Info The effect of the high-speed compression adjuster can be seen in fast compression of the shock absorber.
Risk of injury Parts of the shock absorber will move around if the shock absorber is detached incorrectly. The shock absorber is filled with highly compressed nitrogen. – Please follow the description provided. (Your authorized KTM workshop will be glad to help.) – Turn adjusting screw clockwise up to the last perceptible click.
11 TUNING THE CHASSIS 11.7 Checking the static sag of the shock absorber – Measure dimension of rear wheel unloaded. ( p. 51) – Hold the motorcycle upright with aid of an assistant. – Measure the distance again between the rear axle and mark- ing SAG on the rear fender using the sag gage.
The shock absorber is filled with highly compressed nitrogen. – Please follow the description provided. (Your authorized KTM workshop will be glad to help.) Info Before changing the spring preload, make a note of the present setting, e.g., by measuring the spring length.
11 TUNING THE CHASSIS 11.10 Adjusting the riding sag Preparatory work – Raise the motorcycle with the lift stand. ( p. 61) – Remove the shock absorber. p. 74) – After removing the shock absorber, clean it thoroughly. Main work –...
TUNING THE CHASSIS 11 11.12 Adjusting the compression damping of the fork Info The hydraulic compression damping determines the fork suspension behavior. (EXC‑F BR) – Turn white adjusting screw clockwise as far as it will Info Adjusting screw is located at the upper end of the left fork leg.
11 TUNING THE CHASSIS 11.13 Adjusting the rebound damping of the fork Info The hydraulic rebound damping determines the fork suspension behavior. (EXC‑F BR) – Turn red adjusting screw clockwise as far as it will go. Info Adjusting screw is located at the upper end of the right fork leg.
TUNING THE CHASSIS 11 11.14 Adjusting the spring preload of the fork (All EU models) Preparatory work – Raise the motorcycle with the lift stand. ( p. 61) Main work – Turn T-grips counterclockwise all the way. The marking +0 aligns with the right wing. Info Make the adjustment by hand only.
11 TUNING THE CHASSIS 11.15 Handlebar position (EXC‑F EU/BR) On the upper triple clamp, there are 2 holes at a distance to each other. 15 mm (0.59 in) Hole distance The holes on the handlebar supports are placed at a distance from the center.
Page 61
TUNING THE CHASSIS 11 (EXC‑F EU/BR) – Remove screws . Take off the handlebar clamps. Remove the handlebar and lay it to one side. Info Cover the components to protect them against dam- age. Do not kink the cables and lines. –...
Page 62
11 TUNING THE CHASSIS (EXC‑F Six Days) – Remove screws . Take off the handlebar clamps. Remove the handlebar and lay it to one side. Info Cover the components to protect them against dam- age. Do not kink the cables and lines. –...
SERVICE WORK ON THE CHASSIS 12 12.1 Raising the motorcycle with the lift stand Note Danger of damage The parked vehicle can roll away or fall over. – Park the vehicle on a firm and level surface. – Raise the motorcycle at the frame underneath the engine. Lift stand (78129955100) Neither wheel is in contact with the ground.
12 SERVICE WORK ON THE CHASSIS 12.4 Cleaning the dust boots of the fork legs Preparatory work – Raise the motorcycle with the lift stand. ( p. 61) – Remove the fork protector. ( p. 62) Main work – Push dust boots of both fork legs downward.
SERVICE WORK ON THE CHASSIS 12 12.6 Installing the fork protector – Position the fork protector on the left fork leg. Mount and tighten screws Guideline Remaining screws, 10 Nm (7.4 lbf ft) chassis – Position the brake line, wiring harness, and clamp. Mount and tighten screws –...
12 SERVICE WORK ON THE CHASSIS 12.8 Installing the fork legs Main work – Position the fork legs. Bleeder screws are positioned toward the front. Info The rebound damping is located in right fork leg REB (red adjusting screw). The compression damping is located in left fork leg COM (white adjusting screw).
SERVICE WORK ON THE CHASSIS 12 12.9 Removing the lower triple clamp (EXC‑F EU/BR) Preparatory work – Remove the headlight mask with the headlight. ( p. 120) – Raise the motorcycle with the lift stand. ( p. 61) – Remove the front wheel. p.
12 SERVICE WORK ON THE CHASSIS Info Cover the components to protect them against damage. Do not kink the cables and lines. – Remove O-ring and protective ring – Take off the lower triple clamp with the steering stem. – Remove the upper steering head bearing.
Page 69
SERVICE WORK ON THE CHASSIS 12 – Position the fork legs. Bleeder screws are positioned toward the front. Info The rebound damping is located in right fork leg REB (red adjuster). The compression damping is located in left fork leg COMP (white adjuster). Grooves are milled into the side of the upper end of the V01791-10 fork legs.
12 SERVICE WORK ON THE CHASSIS – Install the front wheel. p. 107) – Install the headlight mask with the headlight. ( p. 121) – Check that the wiring harness, throttle cables, and brake and clutch lines can move freely and are routed correctly. –...
Page 71
SERVICE WORK ON THE CHASSIS 12 – Tighten screws Guideline Screw, bottom triple 15 Nm (11.1 lbf ft) clamp V01793-10 – Tighten screw Guideline Screw, top steering M20x1.5 12 Nm (8.9 lbf ft) head – Mount and tighten screw Guideline Screw, top 17 Nm (12.5 lbf ft) Loctite...
Danger of accidents Incorrect steering head bearing play impairs the handling characteristic and dam- ages components. – Correct incorrect steering head bearing play immediately. (Your authorized KTM workshop will be glad to help.) Info If the vehicle is operated for a lengthy period with play in the steering head bearing, the bearings and the bearing seats in the frame can become damaged over time.
SERVICE WORK ON THE CHASSIS 12 Main work – Loosen screws – Loosen and retighten screw Guideline Screw, top steering M20x1.5 12 Nm (8.9 lbf ft) head – Using a plastic hammer, tap lightly on the upper triple clamp to avoid stresses. E01702-10 –...
12 SERVICE WORK ON THE CHASSIS 12.16 Greasing the steering head bearing (EXC‑F EU/BR) – Remove the lower triple clamp. p. 65) – Install the lower triple clamp. p. 66) (EXC‑F Six Days) – Remove the lower triple clamp. p. 65) –...
SERVICE WORK ON THE CHASSIS 12 – Remove screws . Take off front fender. S01321-10 12.18 Installing front fender Main work (EXC‑F EU/BR) – Position front fender. Mount and tighten screws Guideline Remaining screws, 10 Nm (7.4 lbf ft) chassis V00340-10 –...
12 SERVICE WORK ON THE CHASSIS – Check the headlight setting. ( p. 122) 12.19 Removing the shock absorber Preparatory work – Raise the motorcycle with the lift stand. ( p. 61) Main work – Remove screw and lower the rear wheel with the link fork as far as possible without blocking the rear wheel.
SERVICE WORK ON THE CHASSIS 12 – Raise the rear of the seat, pull the seat back, and lift it off. H02218-10 12.22 Mounting the seat – Mount the front of the seat on the collar bushings of the fuel tank, lower the seat at the rear, and push the seat forward.
12 SERVICE WORK ON THE CHASSIS – Pull off the air filter box cover in area laterally and take it off at the front. V01815-11 Condition The air filter box cover is not secured. – Pull off the air filter box cover in area laterally and take it off at the front.
SERVICE WORK ON THE CHASSIS 12 12.25 Removing the air filter Note Engine damage Unfiltered intake air has a negative effect on the service life of the engine. Dust and dirt will enter the engine without an air filter. – Never start to use the vehicle without an air filter. Note Environmental hazard Hazardous substances cause environmental damage.
12 SERVICE WORK ON THE CHASSIS 12.27 Cleaning the air filter and air filter box Note Environmental hazard Hazardous substances cause environmental damage. – Dispose of oils, grease, filters, fuel, cleaning agents, brake fluid, etc., correctly and in compliance with the applicable regulations. Info Do not clean the air filter with fuel or petroleum since these substances attack the foam.
SERVICE WORK ON THE CHASSIS 12 12.29 Removing the main silencer Warning Danger of burns The exhaust system gets very hot when the vehicle is driven. – Allow the exhaust system to cool down before performing any work on the vehicle. (All EU models) –...
12 SERVICE WORK ON THE CHASSIS Info Over time, the fibers of the glass fiber yarn escape and the damper “burns” out. Not only is the noise level higher, but the performance characteristics change. Preparatory work – Remove main silencer. ( p.
Page 83
SERVICE WORK ON THE CHASSIS 12 Preparatory work – Remove the seat. ( p. 74) Main work – Unplug connector of the fuel pump. – Clean quick release coupling thoroughly with compressed air. Info Under no circumstances should dirt enter into the fuel line.
12 SERVICE WORK ON THE CHASSIS 12.33 Installing the fuel tank Danger Fire hazard Fuel is highly flammable. The fuel in the fuel tank expands when warm and can escape if overfilled. – Do not fuel the vehicle in the vicinity of open flames or lit cigarettes. –...
SERVICE WORK ON THE CHASSIS 12 – Position the horn with the horn bracket. – Mount and tighten screws with the collar bushings. Guideline Remaining screws, 10 Nm (7.4 lbf ft) chassis V01764-11 – Plug in connector for the fuel pump. –...
12 SERVICE WORK ON THE CHASSIS 12.35 Cleaning the chain Warning Danger of accidents Lubricants on the tires reduces the road grip. – Remove lubricants from the tires using a suitable cleaning agent. Warning Danger of accidents Oil or grease on the brake discs reduces the braking effect. –...
SERVICE WORK ON THE CHASSIS 12 Main work – Pull the chain at the end of the chain sliding piece upward to measure chain tension Info Lower chain section must be taut. When the chain guard is mounted, it must be possible to pull up the chain at least to the point where it makes contact with chain guard Chain wear is not always even, so you should repeat...
12 SERVICE WORK ON THE CHASSIS Main work – Loosen nut – Loosen nuts – Adjust the chain tension by turning adjusting screws left and right. Guideline Chain tension 55 … 58 mm (2.17 … 2.28 in) Turn adjusting screws on the left and right so that the markings on the left and right chain adjusters are in the same position relative to reference marks...
Page 89
SERVICE WORK ON THE CHASSIS 12 – Pull on the top section of the chain with the specified weight Guideline Weight of chain wear mea- 10 … 15 kg (22 … 33 lb.) surement – Measure distance of 18 chain rollers in the lower chain section.
Page 90
12 SERVICE WORK ON THE CHASSIS – Check chain sliding piece for wear. » If the lower edge of the chain pins is in line with or below the chain sliding piece: – Change the chain sliding piece. – Check that the chain sliding piece is firmly seated. »...
» If the link fork exhibits damage, cracking, or deformation: – Change the link fork. Info Always replace a damaged link fork. Repairing the link fork is not authorized by KTM. S01317-10 12.41 Checking throttle cable routing Preparatory work –...
12 SERVICE WORK ON THE CHASSIS – Mount the seat. ( p. 75) 12.42 Checking the rubber grip – Check the rubber grips on the handlebar for damage, wear, and looseness. Info The rubber grips are vulcanized onto a sleeve on the left and onto the handle tube of the throttle grip on the right.
SERVICE WORK ON THE CHASSIS 12 12.44 Checking/correcting the fluid level of the hydraulic clutch Warning Skin irritation Brake fluid causes skin irritation. – Keep brake fluid out of the reach of children. – Wear suitable protective clothing and safety glasses. –...
12 SERVICE WORK ON THE CHASSIS 12.45 Changing the hydraulic clutch fluid Warning Skin irritation Brake fluid causes skin irritation. – Keep brake fluid out of the reach of children. – Wear suitable protective clothing and safety glasses. – Do not allow brake fluid to come into contact with the skin, the eyes or clothing. –...
SERVICE WORK ON THE CHASSIS 12 – Inject the liquid into the system until it escapes from open- ings of the master cylinder without bubbles. – Now and then, extract fluid from the master cylinder reservoir to prevent overflow. – Remove the bleeding syringe.
Do not make any adjustments while riding. 13.3 Checking the brake discs Warning Danger of accidents Worn-out brake discs reduce the braking effect. – Make sure that worn-out brake discs are replaced immediately. (Your authorized KTM workshop will be glad to help.)
– Make sure that brake fluid for the front and rear brake is changed in accordance with the service schedule. (Your authorized KTM workshop will be glad to help.) – Move the brake fluid reservoir mounted on the handlebar to a horizontal position.
Danger of accidents Old brake fluid reduces the braking effect. – Make sure that brake fluid for the front and rear brake is changed in accordance with the service schedule. (Your authorized KTM workshop will be glad to help.) Note Environmental hazard Hazardous substances cause environmental damage.
Checking the front brake linings Warning Danger of accidents Worn-out brake linings reduce the braking effect. – Ensure that worn-out brake linings are replaced immediately. (Your authorized KTM workshop will be glad to help.) – Check the brake linings for minimum thickness ≥...
Page 100
Danger of accidents Brake linings which have not been approved alter the braking efficiency. Not all brake linings are tested and approved for KTM motorcycles. The structure and friction coefficient of the brake linings, and thus their brake power, may vary greatly from that of original brake linings.
Page 101
BRAKE SYSTEM 13 Info Make sure that you do not press the brake caliper against the spokes when pushing back the brake pistons. – Remove cotter pin , pull out pin , and remove the brake linings. – Clean the brake caliper and the brake caliper bracket. E00344-10 –...
13 BRAKE SYSTEM – Correct the brake fluid to level Guideline 5 mm (0.2 in) Level (brake fluid level below reservoir rim) Brake fluid DOT 4 / DOT 5.1 ( p. 157) – Position cover with membrane . Mount and tighten screws Info Immediately clean up any brake fluid that has over-...
Danger of accidents Old brake fluid reduces the braking effect. – Make sure that brake fluid for the front and rear brake is changed in accordance with the service schedule. (Your authorized KTM workshop will be glad to help.) – Stand the vehicle upright.
Danger of accidents Old brake fluid reduces the braking effect. – Make sure that brake fluid for the front and rear brake is changed in accordance with the service schedule. (Your authorized KTM workshop will be glad to help.) Note Environmental hazard Hazardous substances cause environmental damage.
Checking the rear brake linings Warning Danger of accidents Worn-out brake linings reduce the braking effect. – Ensure that worn-out brake linings are replaced immediately. (Your authorized KTM workshop will be glad to help.) – Check the brake linings for minimum thickness ≥...
Page 106
Danger of accidents Brake linings which have not been approved alter the braking efficiency. Not all brake linings are tested and approved for KTM motorcycles. The structure and friction coefficient of the brake linings, and thus their brake power, may vary greatly from that of original brake linings.
Page 107
BRAKE SYSTEM 13 – Remove cotter pin , pull out pin , and remove the brake linings. – Clean the brake caliper and brake caliper bracket. E00351-10 – Check that spring plate in the brake caliper and sliding plate in the brake caliper bracket are seated properly. E00352-10 –...
14 WHEELS, TIRES 14.1 Removing the front wheel Preparatory work – Raise the motorcycle with the lift stand. ( p. 61) Main work – Manually press the brake caliper toward the brake disc to push back the brake pistons. Info Make sure that you do not press the brake caliper against the spokes when pushing back the brake pistons.
WHEELS, TIRES 14 14.2 Installing the front wheel Warning Danger of accidents Oil or grease on the brake discs reduces the braking effect. – Always keep the brake discs free of oil and grease. – Clean the brake discs with brake cleaner when necessary. –...
14 WHEELS, TIRES Main work – Manually press the brake caliper toward the brake disc to push back the brake piston. Info Make sure that you do not press the brake caliper against the spokes when pushing back the brake piston. –...
Page 111
WHEELS, TIRES 14 Main work – Check the wheel bearing for damage and wear. » If the wheel bearing is damaged or worn: – Change the rear wheel bearing. – Clean and grease shaft seal rings and contact surfaces of the spacers. Long-life grease ( p.
DOT number. The first two digits indicate the week of manufacture and the last two digits the year of manu- facture. KTM recommends that the tires be changed after 5 H01144-01 years at the latest, regardless of the actual state of wear.
Other spokes will become looser as a result. – Check spoke tension regularly, and in particular on a new vehicle. (Your authorized KTM workshop will be glad to help.) –...
15 ELECTRICAL SYSTEM 15.1 Removing the 12-V battery Note Environmental hazard 12 V batteries contain environmentally hazardous materials. – Do not dispose of 12 V batteries as household waste. – Dispose of 12 V batteries at a collection point for used batteries. Note Environmental hazard Hazardous substances cause environmental damage.
Page 115
ELECTRICAL SYSTEM 15 (EXC‑F BR) Warning Risk of injury Battery acid and battery gases cause serious chemical burns. – Keep 12 V batteries out of the reach of chil- dren. – Wear suitable protective clothing and safety glasses. – Avoid contact with battery acid and battery gases.
15 ELECTRICAL SYSTEM – Remove screw and detach the battery compartment. – Lift out the 12-V battery. V01779-10 15.2 Installing the 12-V battery Main work – Insert the 12-V battery into the battery compartment with the terminals facing forward and secure with holding bracket (All EU models) 12 V battery (HJTZ5S-FP-C) ( p.
ELECTRICAL SYSTEM 15 – Connect the positive cable to the 12-V battery. Guideline Screw, battery termi- 2.5 Nm (1.84 lbf ft) Info Contact disk must be mounted under screw cable lug with the claws toward the battery termi- nal. – Slide positive terminal cover over the positive terminal.
Page 118
15 ELECTRICAL SYSTEM Main work (All EU models) Warning Risk of injury 12 V batteries contain harmful sub- stances. – Keep 12 V batteries out of the reach of chil- dren. – Keep sparks and open flames away from 12 V F01568-10 batteries.
Page 119
The charging time may be longer at low tempera- tures. This battery charger is only suitable for lithium iron phosphate batteries. Read the accompanying KTM PowerParts instructions. Info If the charging current, charging voltage, or charging time is exceeded, the 12 V battery will be destroyed.
15 ELECTRICAL SYSTEM Info If the charging current, charging voltage and charg- ing time are exceeded, electrolyte escapes through the safety valves. This reduces the capacity of the 12-V battery. If the 12-V battery is left in a discharged state for an extended period, it will become deeply dis- charged and sulfating occurs, destroying the bat- tery.
ELECTRICAL SYSTEM 15 – Take off protection caps – Remove faulty main fuse Info A faulty fuse has a burned-out fuse wire A spare fuse is located in the starter relay. – Insert a new main fuse. Fuse (58011109120) ( p.
15 ELECTRICAL SYSTEM Info A faulty fuse has a burned-out fuse wire Warning Fire hazard Incorrect fuses overload the electrical sys- tem. – Only use fuses with the required ampere value. – Do not bypass or repair fuses. – Insert the spare fuse with the correct rating. Fuse (75011088010) ( p.
ELECTRICAL SYSTEM 15 15.7 Installing the headlight mask with the headlight Main work – Join plug-in connectors S01328-11 – Position the headlight mask and secure it with rubber straps The holding lugs engage in the fender. – Position the brake line and wiring harness in the brake line guide.
15 ELECTRICAL SYSTEM – Pull out headlight bulb – Insert the new headlight bulb. Headlight (HS1 / socket PX43t) ( p. 152) – Insert the protection cap with the bulb socket into the reflector and turn it clockwise all the way. Info Ensure that O-ring is seated properly.
ELECTRICAL SYSTEM 15 Main work – Loosen screw – Adjust the headlight range by pivoting the headlight. Guideline The boundary between light and dark must be exactly on the lower mark for a motorcycle with rider (instructions on how to apply the mark: Checking the headlight setting). Info V00369-10 A change in weight on the vehicle may require a correc-...
15 ELECTRICAL SYSTEM 15.12 Changing the combination instrument battery Preparatory work – Remove the headlight mask with the headlight. ( p. 120) Main work – Remove screws with the washers. – Pull the combination instrument upward out of the holder. V01807-10 –...
COOLING SYSTEM 16 16.1 Cooling system Water pump in the engine ensures forced circulation of the coolant. The pressure resulting from the warming of the cooling system is regulated by a valve in radiator cap . This ensures that operat- ing the vehicle at the specified coolant temperature will not result in a risk of malfunctions.
16 COOLING SYSTEM Coolant ( p. 157) – Mount the radiator cap. 16.3 Checking the coolant level Warning Danger of scalding During motorcycle operation, the coolant gets very hot and is under pressure. – Do not open the radiator, the radiator hoses or other cooling system components if the engine or the cooling system are at operating temperature.
COOLING SYSTEM 16 Warning Danger of poisoning Coolant is toxic and a health hazard. – Keep coolant out of the reach of children. – Do not allow coolant to come into contact with the skin, the eyes and clothing. – Consult a doctor immediately if coolant is swallowed. –...
16 COOLING SYSTEM 16.6 Changing the coolant Warning Danger of scalding During motorcycle operation, the coolant gets very hot and is under pressure. – Do not open the radiator, the radiator hoses or other cooling system components if the engine or the cooling system are at operating temperature.
TUNING THE ENGINE 17 17.1 Checking the throttle cable play – Check the throttle grip for smooth operation. – Move the handlebar to the straight-ahead position. Turn the throttle grip back and forth slightly and determine the play in throttle cable Throttle cable play 3 …...
17 TUNING THE ENGINE Main work – Move the handlebar to the straight-ahead position. – Push back sleeve – Loosen nut – Turn adjusting screw in as far as possible. – Loosen nut – Push cold start button all the way to the stop. –...
TUNING THE ENGINE 17 – Remove guide plate from handle tube – Position the required guide plate on the grip tube. Guideline The label OUTSIDE must be visible. Marking must be positioned at marking Grey guide plate (79002014000) Alternative 1 Black guide plate (79002014100) Info The gray guide plate opens the throttle valve more...
Danger of accidents The engine may go out spontaneously if the idle speed is set too low. – Set the idle speed to the specified value. (Your authorized KTM workshop will be glad to help.) – Run the engine until warm.
TUNING THE ENGINE 17 17.6 Programming the throttle valve position Info If the control unit detects that the throttle valve position at idle speed needs to be reprogrammed, then the malfunction indicator lamp flashes 2x per second. Danger Danger of poisoning Exhaust gases are toxic and inhal- ing them may result in unconsciousness and death.
17 TUNING THE ENGINE 17.8 Adjusting the basic position of the shift lever – Remove screw with the washers and take off shift lever 401950-12 – Clean gear teeth of the shift lever and shift shaft. – Mount the shift lever on the shift shaft in the required position and engage gearing.
SERVICE WORK ON THE ENGINE 18 18.1 Changing the fuel screen Danger Fire hazard Fuel is highly flammable. The fuel in the fuel tank expands when warm and can escape if overfilled. – Do not fuel the vehicle in the vicinity of open flames or lit cigarettes. –...
18 SERVICE WORK ON THE ENGINE Danger Danger of poisoning Exhaust gases are toxic and inhal- ing them may result in unconsciousness and death. – Always make sure there is sufficient ventilation when running the engine. – Use effective exhaust extraction when starting or running the engine in an enclosed space.
Page 139
SERVICE WORK ON THE ENGINE 18 Main work – Position an appropriate container under the engine. – Remove oil drain plug with the magnet and seal ring. Info Do not remove screws K00567-10 – Remove screw plug with oil screen and the O-rings.
Page 140
18 SERVICE WORK ON THE ENGINE – Pull oil filter out of the oil filter housing. Lock ring plier (51012011000) – Allow the engine oil to drain completely. – Thoroughly clean the parts and the sealing surface. K00572-10 – Lay the motorcycle on its right side and fill the oil filter hous- ing approx.
157) Info In order to achieve optimal engine oil performance, it is not advisable to mix different engine oils. KTM recommends changing the engine oil. – Mount and tighten the filler plug together with the O-ring. Danger Danger of poisoning Exhaust gases are toxic and inhal- ing them may result in unconsciousness and death.
19 CLEANING, CARE 19.1 Cleaning the motorcycle Note Material damage Components become damaged or destroyed if a pressure cleaner is used incorrectly. The high pressure forces water into the electrical components, connectors, throttle cables, and bearings, etc. Pressure which is too high causes malfunctions and destroys components. –...
CLEANING, CARE 19 – Treat bare metal (except for brake discs and the exhaust sys- tem) with a corrosion inhibitor. Preserving materials for paints, metal and rubber p. 159) – Treat all plastic parts and powder-coated parts with a mild cleaning and care product.
– Store the vehicle in a dry location that is not subject to large fluctuations in temperature. Info KTM recommends jacking up the motorcycle. – Raise the motorcycle with the lift stand. ( p. 61) – Preferably cover the motorcycle with a tarp or similar cover that is permeable to air.
STORAGE 20 Info Avoid running the engine for a short time only. Since the engine cannot warm up properly, the water vapor produced during combustion condenses and causes valves and the exhaust system to rust. 20.2 Preparing for use after storage –...
Check the electrical system. faulty – Error in the electronic fuel Read out the fault memory using the injection KTM diagnostics tool. – Engine does not speed up Error in the electronic fuel Read out the fault memory using the injection KTM diagnostics tool.
Page 147
– Read out the fault memory using the KTM diagnostics tool. – High oil consumption Engine vent hose bent Route the vent hose without bends or replace it if necessary.
22 BLINK CODE Info The blink codes are only displayed by the derestricted version of the vehicle. Blink code for malfunction indicator lamp 02a Malfunction indicator lamp flashes 2x per second Error level condition Throttle valve position programming necessary Blink code for malfunction indicator lamp 02 Malfunction indicator lamp flashes 2x short Crankshaft speed sensor –...
Page 149
BLINK CODE 22 Blink code for malfunction indicator lamp 22 Malfunction indicator lamp flashes 2x long, 2x short Error level condition Gear position sensor - input voltage too high Gear position sensor - input voltage too low Blink code for malfunction indicator lamp 33 Malfunction indicator lamp flashes 3x long, 3x short Error level condition...
23 TECHNICAL DATA front 2.0 bar (29 psi) rear 2.0 bar (29 psi) Final drive (All EU models) 14:52 (13:52) Final drive (EXC‑F BR) 14:52 (13:52) Chain 5/8 x 1/4" Rear sprockets available 48, 50, 52 Steering head angle 63.5° Wheelbase 1,482 ±...
140/80 - 18 M/C 70M M+S TT Metzeler MCE 6 Days Extreme Metzeler MCE 6 Days Extreme The tires specified represent one of the possible series production tires. Additional information is available in the Service section under: http://www.ktm.com 23.7 Fork 23.7.1 EXC‑F BR Fork article number 14.18.8T.63...
23 TECHNICAL DATA Standard Sport Spring length with preload spacer(s) 474 mm (18.66 in) Spring rate Weight of rider: 65 … 75 kg (143 … 165 lb.) 3.8 N/mm (21.7 lb/in) Weight of rider: 75 … 85 kg (165 … 187 lb.) 4.0 N/mm (22.8 lb/in) Weight of rider: 85 …...
SUBSTANCES 24 Brake fluid DOT 4 / DOT 5.1 Standard/classification – Guideline – Use only brake fluid that complies with the specified standard (see specifications on the container) and that exhibits the corresponding properties. Recommended supplier Castrol – REACT PERFORMANCE DOT 4 MOTOREX ®...
Page 160
24 SUBSTANCES Fork oil (SAE 4) (48601166S1) Standard/classification – SAE ( p. 161) (SAE 4) Guideline – Use only oils that comply with the specified standards (see specifications on the container) and that exhibit the corresponding properties. Shock absorber fluid (SAE 2.5) (50180751S1) Standard/classification –...
STANDARDS 26 JASO T903 MA2 Different technical development directions required a separate specification for motorcycles – the JASO T903 MA2 standard. Earlier, engine oils from the automobile industry were used for motorcycles because there was no separate motor- cycle specification. Whereas long service intervals are demanded for automobile engines, the focus for motorcycle engines is on high performance at high engine speeds.
Malfunction indicator lamp lights up/flashes yellow – The OBD has detected an error in the vehicle electronics. Come safely to a halt, and contact an authorized KTM workshop. The fuel level warning lamp lights up yellow – The fuel level has reached the reserve mark.
Need help?
Do you have a question about the 250 EXC-F 2021 and is the answer not in the manual?
Questions and answers