KTM 350 XC-F US KAILUB RUSSELL 2021 User Manual (English)

Questions and Answers:

B
Brenda JonesAug 6, 2025
What to do if my KTM 350 XC-F US KAILUB RUSSELL 2021 Motorcycle engine does not turn when the start button is pressed?
- J
  jennifer29Aug 6, 2025
  If your KTM Motorcycle engine doesn't turn over when you press the start button, there could be several reasons. It could be due to an operating error, so make sure you are following the correct start procedure. The 12V battery might be discharged, so you should charge it, check the charging voltage, open-circuit current, and the alternator's stator winding. Also, the main fuse could be blown, in which case you should change it. Finally, the starter relay or the starter motor itself could be defective, so these should be checked.
H
Henry MurphyAug 10, 2025
What to do if my KTM 350 XC-F US KAILUB RUSSELL 2021 Motorcycle engine turns but does not start?
- K
  Karen TaylorAug 10, 2025
  If your KTM Motorcycle engine turns but doesn't start, several factors could be the cause. First, check if the quick release coupling is properly joined. A clogged fuel screen in the quick release coupling could also be the problem, so you may need to replace it. Incorrect idle speed can prevent starting, so adjust it accordingly. Also, inspect the spark plug; if it's oily or wet, clean and dry it, or replace it if needed. Ensure the spark plug gap is correct, with a guideline of 0.8 mm (0.031 in). A frayed short-circuit cable or faulty switch-off button can cause this issue, so check the wiring harness and electrical system. Lastly, a malfunction in the electronic fuel injection could be the cause, requiring you to read out the fault memory using the KTM diagnostics tool.
S
Sarah WoodAug 14, 2025
Why is my KTM 350 XC-F US KAILUB RUSSELL 2021 Motorcycle consuming so much oil?
- J
  jbrownAug 14, 2025
  High oil consumption in your KTM Motorcycle can be attributed to several factors. A bent engine vent hose can cause increased oil usage, so ensure the vent hose is routed without bends, or replace it if necessary. An excessively high engine oil level can also lead to higher consumption, so check and correct the engine oil level. Using engine oil that is too thin (low viscosity) can also contribute to this issue, so change the engine oil and oil filter, and clean the oil screen. Lastly, worn piston or cylinder components can increase oil consumption, so measure the piston/cylinder mounting clearance.
J
Joshua SheltonAug 18, 2025
Why does my KTM 350 XC-F US KAILUB RUSSELL 2021 engine overheat?
- L
  lisa61Aug 18, 2025
  Your KTM Motorcycle engine might be overheating due to several reasons. There might be too little coolant in the cooling system, so check for leaks and verify the coolant level. Insufficient airflow can also cause overheating, so switch off the engine when standing. Dirty radiator fins can restrict cooling, so clean them. Foam formation in the cooling system can also lead to overheating, so drain and refill the coolant. Finally, a bent radiator hose can restrict coolant flow, so replace it if necessary.
R
Roberto KiddAug 23, 2025
Why does my KTM 350 XC-F US KAILUB RUSSELL 2021 Motorcycle have too little power?
- P
  Paul CarsonAug 23, 2025
  If your KTM Motorcycle has too little power, several issues could be responsible. A very dirty air filter can restrict airflow, so clean the air filter and air filter box. A dirty fuel filter can also reduce power, so replace it. A malfunction in the electronic fuel injection could be the cause, requiring you to read out the fault memory using the KTM diagnostics tool. Check the exhaust system for leaks or deformation, and consider changing the glass fiber yarn filling in the main silencer. Lastly, insufficient valve clearance can affect power, so adjust the valve clearance.
A
Ann BarnesAug 27, 2025
What to do if the malfunction indicator lamp lights up on my KTM 350 XC-F US KAILUB RUSSELL 2021?
- H
  Hannah WeaverAug 27, 2025
  If the malfunction indicator lamp lights up or flashes on your KTM Motorcycle, it indicates an error in the electronic fuel injection. Check the wiring for damage and the electrical plug-in connections for corrosion and damage. You should also read out the fault memory using the KTM diagnostics tool.
C
clarkyvetteSep 1, 2025
What to do if my KTM 350 XC-F US KAILUB RUSSELL 2021 Motorcycle 12 V battery discharged?
- E
  ericrushSep 1, 2025
  If your KTM Motorcycle 12 V battery is discharged, it could be due to a couple of reasons. The battery might not be charging, so check the charging voltage and the stator winding of the alternator. Alternatively, there might be an unwanted power consumer draining the battery, so check the open-circuit current.

KTM 350 XC-F US KAILUB RUSSELL 2021 Specifications

General

Brand	KTM
Model	350 XC-F US KAILUB RUSSELL 2021
Category	Motorcycle
Language	English

Summary

Safety Advice

Use Definition – Intended Use

Safety Advice

Degrees of Risk and Symbols

Details the meaning of danger, warning, caution, and note symbols used in the manual.

Tampering Warning

Safe Operation

Provides crucial safety warnings regarding rider fitness, alcohol, drugs, and exhaust gases.

Protective Clothing

Highlights the importance of wearing appropriate and well-maintained protective clothing for safety.

Work Rules

Controls

Clutch Lever

Hand Brake Lever

Switch-off Button

Start Button

Combination Switch

Explains the combination switch on the left handlebar for engine mapping and controls.

Overview of Indicator Lamps

Opening Fuel Tank Filler Cap

Cold Start Button

Shift Lever

Foot Brake Lever

Factory Start (XC-F US KAILUB RUSSELL)

Details the Factory Start mechanism on the fork protector and its states.

Preparing for Use

Advice on Preparing for First Use

Provides crucial safety advice and checks before the first ride, including rider fitness and clothing.

Running in the Engine

Gives guidelines for the engine run-in phase, specifying maximum speeds and performance.

Starting Power of Lithium-Ion Batteries at Low Temperatures

Preparing the Vehicle for Difficult Operating Conditions

Advises on preparing the vehicle for various challenging conditions like sand and mud.

Riding Instructions

Checks and Maintenance Measures When Preparing for Use

Lists essential checks before every trip to ensure the vehicle is safe and operational.

Starting the Vehicle

Provides instructions and warnings for starting the vehicle, including exhaust gas dangers.

Activating Launch Control

Explains how launch control aids acceleration and its conditions for activation.

Activating Traction Control

Details activating traction control for improved control, especially in wet conditions.

Activating the Factory Start (XC-F US KAILUB RUSSELL)

Warns about the Factory Start actuator freezing in cold weather and activation timing.

Starting Off

Shifting, Riding

Guides on shifting gears, adapting speed, and stopping the engine when stationary.

Applying the Brakes

Provides warnings and advice on brake application, including spongy points and moisture.

Stopping, Parking

Refueling

Details refueling procedures with fire and poisoning hazard warnings.

Service Schedule

Required Work

Lists mandatory maintenance tasks required at various operating hour intervals.

Recommended Work

Outlines recommended maintenance tasks based on operating hours or time intervals.

Tuning the Chassis

Checking the Basic Chassis Setting with Rider's Weight

Explains how to adjust suspension settings based on rider weight for optimal handling.

Air Suspension XACT 5548

Compression Damping of the Shock Absorber

Explains high-speed and low-speed compression damping and their effects.

Adjusting the Low-Speed Compression Damping of the Shock Absorber

Provides step-by-step instructions for adjusting low-speed compression damping.

Adjusting the High-Speed Compression Damping of the Shock Absorber

Details how to adjust high-speed compression damping for the shock absorber.

Adjusting the Rebound Damping of the Shock Absorber

Explains how to adjust rebound damping for the shock absorber.

Checking the Static Sag of the Shock Absorber

Guides on checking static sag and specifies values for different models.

Checking the Riding Sag of the Shock Absorber

Details how to check riding sag and specifies values for different models.

Adjusting the Spring Preload of the Shock Absorber

Explains preparatory work and main work for adjusting shock absorber spring preload.

Adjusting the Riding Sag

Outlines preparatory work and main work for adjusting riding sag.

Adjusting the Fork Air Pressure

Provides a warning on suspension modification and steps to adjust fork air pressure.

Adjusting the Compression Damping of the Fork

Explains how hydraulic compression damping affects fork behavior and adjustment.

Adjusting the Rebound Damping of the Fork

Details how hydraulic rebound damping affects fork behavior and its adjustment.

Adjusting the Handlebar Position

Service Work on the Chassis

Raising the Motorcycle with a Lift Stand

Removing the Motorcycle from the Lift Stand

Bleeding the Fork Legs

Removing the Fork Legs

Installing the Fork Legs

Removing the Lower Triple Clamp

Installing the Lower Triple Clamp

Checking Steering Head Bearing Play

Warns about play in steering head bearing and its impact on handling.

Adjusting the Steering Head Bearing Play

Guides on loosening, removing, and tightening screws for steering head bearing adjustment.

Removing the Shock Absorber

Installing the Shock Absorber

Cleaning the Air Filter and Air Filter Box

Installing the Main Silencer

Changing the Glass Fiber Yarn Filling of the Main Silencer

Removing the Fuel Tank

Provides hazard warnings for fuel and outlines steps to unplug, disconnect, and remove the fuel tank.

Installing the Fuel Tank

Cleaning the Chain

Checking the Chain Tension

Warns about incorrect chain tension and provides a method for checking it.

Adjusting the Chain Tension

Warns about incorrect chain tension and provides instructions for adjustment.

Checking the Chain, Rear Sprocket, Engine Sprocket, and Chain Guide

Checking the Frame

Checking the Link Fork

Adjusting the Basic Position of the Clutch Lever

Checking/Correcting the Fluid Level of the Hydraulic Clutch

Explains how to check and correct the hydraulic clutch fluid level.

Changing the Hydraulic Clutch Fluid

Provides instructions and warnings for changing the hydraulic clutch fluid.

Brake System

Checking the Free Travel of the Hand Brake Lever

Warns about overheating affecting the brake system and how to check hand brake lever free travel.

Adjusting the Basic Position of the Hand Brake Lever

Checking the Brake Discs

Warns that worn brake discs reduce braking effect and need immediate replacement.

Checking the Front Brake Fluid Level

Details insufficient fluid level and old fluid warnings for the front brake system.

Adding Front Brake Fluid

Provides warnings regarding skin irritation and old brake fluid, and how to add fluid.

Checking the Front Brake Linings

Guides on checking front brake linings for minimum thickness, damage, and cracking.

Changing the Brake Linings of the Front Brake

Checking the Free Travel of Foot Brake Lever

Warns about overheating affecting the brake system and how to check foot brake lever free travel.

Adjusting the Basic Position of the Foot Brake Lever

Guides on adjusting the foot brake lever position for individual requirements.

Checking the Rear Brake Fluid Level

Details insufficient fluid level and old fluid warnings for the rear brake system.

Adding Rear Brake Fluid

Provides warnings regarding skin irritation and old brake fluid, and how to add fluid.

Checking the Brake Linings of the Rear Brake

Guides on checking rear brake linings for minimum thickness, damage, and cracking.

Changing the Rear Brake Linings

Wheels, Tires

Removing the Front Wheel

Guides on removing the front wheel, including brake caliper pressing and spindle removal.

Installing the Front Wheel

Removing the Rear Wheel

Installing the Rear Wheel

Checking the Tire Condition

Checking Tire Pressure

Checking the Spoke Tension

Cooling System

Checking the Antifreeze and Coolant Level

Provides warnings about hot coolant and its toxicity, and how to check levels.

Checking the Coolant Level

Draining the Coolant

Refilling Coolant

Changing the Coolant

Tuning the Engine

Checking the Play in the Throttle Cable

Adjusting the Play in the Throttle Cable

Adjusting the Characteristic Map of the Throttle Response

Explains changing throttle response via guide plates and their differing effects.

Changing the Mapping

Describes activating STANDARD and ADVANCED engine mapping via the combination switch.

Adjusting the Idle Speed

Programming the Throttle Valve Position

Checking the Basic Position of the Shift Lever

Adjusting the Basic Position of the Shift Lever

Service Work on the Engine

Changing the Fuel Screen

Checking the Engine Oil Level

Explains how to check engine oil level when the engine is cold or warm.

Changing the Engine Oil and Oil Filter, Cleaning the Oil Screen

Warns about hot engine oil and provides steps for draining, cleaning, and refilling.

Adding Engine Oil

Troubleshooting

Blink Code

Related product manuals

KTM 350 XC-F US KAILUB RUSSELL 2021 User Manual

Table of Contents

Questions and Answers:

KTM 350 XC-F US KAILUB RUSSELL 2021 Specifications

Summary

Safety Advice

Use Definition – Intended Use

Safety Advice

Degrees of Risk and Symbols

Tampering Warning

Safe Operation

Protective Clothing

Work Rules

Controls

Clutch Lever

Hand Brake Lever

Switch-off Button

Start Button

Combination Switch

Overview of Indicator Lamps

Opening Fuel Tank Filler Cap

Cold Start Button

Shift Lever

Foot Brake Lever

Factory Start (XC-F US KAILUB RUSSELL)

Preparing for Use

Advice on Preparing for First Use

Running in the Engine

Starting Power of Lithium-Ion Batteries at Low Temperatures

Preparing the Vehicle for Difficult Operating Conditions

Riding Instructions

Checks and Maintenance Measures When Preparing for Use

Starting the Vehicle

Activating Launch Control

Activating Traction Control

Activating the Factory Start (XC-F US KAILUB RUSSELL)

Starting Off

Shifting, Riding

Applying the Brakes

Stopping, Parking

Refueling

Service Schedule

Required Work

Recommended Work

Tuning the Chassis

Checking the Basic Chassis Setting with Rider's Weight

Air Suspension XACT 5548

Compression Damping of the Shock Absorber

Adjusting the Low-Speed Compression Damping of the Shock Absorber

Adjusting the High-Speed Compression Damping of the Shock Absorber

Adjusting the Rebound Damping of the Shock Absorber

Checking the Static Sag of the Shock Absorber

Checking the Riding Sag of the Shock Absorber

Adjusting the Spring Preload of the Shock Absorber

Adjusting the Riding Sag

Adjusting the Fork Air Pressure

Adjusting the Compression Damping of the Fork

Adjusting the Rebound Damping of the Fork

Adjusting the Handlebar Position

Service Work on the Chassis

Raising the Motorcycle with a Lift Stand

Removing the Motorcycle from the Lift Stand

Bleeding the Fork Legs

Removing the Fork Legs

Installing the Fork Legs

Removing the Lower Triple Clamp

Installing the Lower Triple Clamp

Checking Steering Head Bearing Play

Adjusting the Steering Head Bearing Play

Removing the Shock Absorber

Installing the Shock Absorber

Cleaning the Air Filter and Air Filter Box

Installing the Main Silencer

Changing the Glass Fiber Yarn Filling of the Main Silencer

Removing the Fuel Tank

Installing the Fuel Tank

Cleaning the Chain

Checking the Chain Tension

Adjusting the Chain Tension

Checking the Chain, Rear Sprocket, Engine Sprocket, and Chain Guide