KTM 450 SX-F 2021 User Manual

OWNER'S MANUAL 2021
450 SX‑F
450 XC-F
450 SX-F FACTORY EDITION
Art. no. 3214217en

KTM 450 SX-F 2021 Specifications

General

Engine Type	Single Cylinder, 4-Stroke
Displacement	449.9 cc
Bore x Stroke	95 mm x 63.4 mm
Starter	Electric starter
Transmission	5-speed
Frame	Central Double-Cradle Type 25CrMo4 Steel
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Ground Clearance	370 mm
Seat Height	950 mm
Compression Ratio	12.75:1
Fuel System	Keihin EFI, 44 mm
Cooling	Liquid cooling
Front Brake	260 mm disc
Rear Brake	220 mm disc
Fuel Tank Capacity	7 L

Summary

Means of Representation

Symbols Used

Explains the meaning of various symbols used throughout the manual.

Formats Used

Details the typographical formats and their significance in the document.

Safety Advice

Intended Use and Misuse

Defines the vehicle's intended purpose and what constitutes misuse.

Risk Warnings and Symbols

Explains risk levels, symbols, and warnings for safe operation.

Safe Operation and Protective Gear

Provides guidance on safe operation and the importance of protective clothing.

Work Rules and Environmental Care

Outlines rules for vehicle maintenance and environmental considerations.

Owner's Manual Guidance

Emphasizes the importance of reading and storing the Owner's Manual.

Important Notes

Manufacturer Warranty and Service

Covers warranty conditions and the importance of scheduled service.

Fuel, Fluids, and Parts

Notes on fuel, auxiliary substances, and spare parts usage.

Figures and Customer Support

Information regarding figures in the manual and customer service.

View of Vehicle

Front Left View

Identifies key components from the front left perspective.

Rear Right View

Identifies key components from the rear right perspective.

Serial Numbers

Vehicle Identification Number

Details the location of the Vehicle Identification Number (VIN).

Type Label and Engine Number

Shows the location of the type label and engine number.

Fork and Shock Absorber Article Numbers

Locates the article numbers for fork and shock absorber components.

Controls

Handlebar Controls

Describes clutch lever, hand brake lever, throttle grip, and stop button.

Switches and Indicators

Explains the combination switch and indicator lamps.

Fuel Tank and Starting Systems

Details operation of the fuel tank cap and cold start button.

Engine and Gear Controls

Covers idle speed adjustment, shift lever, and foot brake lever.

Chassis Ancillaries (Stands, Factory Start)

Explains plug-in stand, side stand, and Factory Start system.

Preparing for Use

Initial Use Preparation and Advice

Provides essential advice and safety checks before the first ride.

Engine Break-in and Low Temperature Starting

Guides on engine running-in and battery performance in cold.

Riding in Difficult Conditions

Details preparations for riding on sand, mud, and various terrains.

Riding Instructions

Pre-Ride Checks and Starting Procedure

Covers pre-ride maintenance checks and how to start the vehicle.

Riding Aids: Launch & Traction Control

Instructions for activating and using Launch and Traction Control.

Factory Start and Starting Off

Details on activating Factory Start and beginning to ride.

Shifting, Braking, and Stopping

Guidance on gear shifting, braking techniques, and parking the vehicle.

Transporting and Refueling

Procedures and safety warnings for transporting and refueling.

Service Schedule

Additional Service Information

Notes on service schedules, local variations, and updates.

Required Maintenance Tasks

Lists essential maintenance tasks and their intervals.

Recommended Maintenance Tasks

Lists recommended maintenance tasks and their intervals.

Tuning the Chassis

Chassis Settings and Rider Weight

Adjusting basic chassis settings based on rider weight.

Shock Absorber Adjustment

Procedures for adjusting compression and rebound damping.

Sag Measurement and Adjustment

Checking and adjusting static and riding sag of the shock absorber.

Fork Adjustment

Procedures for adjusting fork air pressure and damping.

Handlebar Position Adjustment

Guidance on adjusting the handlebar position for comfort.

Service Work on the Chassis

Motorcycle Lifting and Securing

Instructions for lifting and securing the motorcycle safely.

Fork and Steering System Service

Maintenance procedures for fork legs, triple clamps, and steering head.

Shock Absorber and Chain Maintenance

Procedures for removing/installing shock absorber and maintaining the chain.

Fuel Tank and Air Filter Service

Procedures for removing/installing fuel tank and servicing air filter.

Brake System

Handle Brake Lever Checks and Adjustments

Checking free travel and adjusting the hand brake lever position.

Brake Disc Checks

Procedure for checking brake discs for wear and damage.

Front Brake System Service

Includes checking fluid level, adding fluid, and changing linings.

Rear Brake System Service

Includes checking fluid level, adding fluid, and changing linings.

Wheels, Tires

Front Wheel Service

Procedure for removing and installing the front wheel.

Rear Wheel Service

Procedure for removing and installing the rear wheel.

Tire Condition and Pressure Checks

Checking tire condition, age, and pressure.

Spoke Tension Check

Guidance on checking spoke tension for wheel integrity.

Electrical System

12V Battery Service

Procedures for removing, installing, and charging the 12V battery.

Fuses and Diagnostics

Covers changing the main fuse and locating the diagnostics connector.

Cooling System

Cooling System Overview

Describes the cooling system components and airflow effect.

Coolant Level and Antifreeze Checks

Safety warnings and procedures for checking coolant and antifreeze.

Coolant Draining and Refilling

Procedures for draining and refilling the cooling system.

Coolant Change Procedure

Detailed steps for changing the engine coolant.

Tuning the Engine

Throttle Cable Play Adjustment

Checking and adjusting the play in the throttle cable.

Throttle Response and Mapping

Adjusting throttle response by changing guide plates and engine maps.

Idle Speed and Throttle Valve Programming

Adjusting idle speed and reprogramming throttle valve position.

Shift Lever Position Adjustment

Checking and adjusting the basic position of the shift lever.

Service Work on the Engine

Fuel System Service

Procedure for changing the fuel screen.

Engine Oil Level Check

How to check the engine oil level when cold or warm.

Engine Oil and Filter Change

Procedure for changing engine oil, oil filter, and cleaning screens.

Adding Engine Oil

Procedure for adding engine oil to the correct level.

Cleaning, Care

Motorcycle Cleaning Procedures

Instructions for safely cleaning the motorcycle, avoiding damage.

Storage

Long-Term Storage Preparation

Steps for preparing the motorcycle for extended storage.

Preparing for Use After Storage

Steps to take to ready the motorcycle after storage.

Troubleshooting

Engine Start and Performance Issues

Addresses faults like engine not starting or losing power.

Oil Consumption and Battery Issues

Troubleshooting for high oil consumption and battery problems.

Blink Code

Malfunction Indicator Lamp Codes

Lists blink codes for the malfunction indicator lamp.

Error Level Conditions

Details the error level conditions associated with blink codes.

Technical Data

Engine Specifications

Detailed technical data for the engine.

Chassis Specifications

Technical data related to the frame, forks, and brakes.

Suspension Data (Fork/Shock Absorber)

Specifications for fork and shock absorber settings and oil.

Electrical and Tire Data

Technical data for electrical system components and tires.

Tightening Torques and Capacities

Lists engine and chassis tightening torques and fluid capacities.

Declarations of Conformity

General and FCC Declarations

General conformity statements and FCC/IC regulations.

Country-Specific Conformity

Information on country-specific compliance marks and declarations.

Substances

Brake Fluid, Coolant, and Engine Oil

Specifications and recommendations for brake fluid, coolant, and engine oil.

Fork Oil, Shock Absorber Fluid, and Fuel

Specifications for fork oil, shock absorber fluid, and fuel requirements.

Auxiliary Substances

Cleaners and Lubricants

Lists recommended cleaners for air filters, chains, and motorcycles.

Preserving Materials and Sprays

Lists recommended preserving materials, silicone spray, and grease.

Standards

JASO T903 MA2 Standard

Explanation of the JASO T903 MA2 standard for motorcycle oils.

SAE Viscosity Standards

Explanation of SAE viscosity classifications for oils.

Index of Special Terms

Glossary Terms

Definitions for terms like Launch Control and OBD.

List of Abbreviations

Common Abbreviations

Lists common abbreviations used in the manual.

List of Symbols

Symbol Categories

Explains the meaning of red, yellow/orange, green/blue, and white symbols.