KTM RC 390 2020 User Manual (English)

Questions and Answers:

E
Edward CurryAug 17, 2025
What to do if my KTM RC 390 2020 engine doesn't turn over when I press the start button?
- M
  mgrimesAug 17, 2025
  If your KTM Motorcycle engine doesn't turn over when you press the start button, it could be due to several reasons. You may need to carry out the start procedure. The 12-V battery might be discharged, so you should charge it. A fuse (1, 3, 4, or 7) could be blown, in which case you should change the affected fuses. Also, check the ground connection to ensure it's properly connected.
K
Kyle WallaceAug 19, 2025
Why does my KTM Motorcycle engine overheat?
- H
  howardcodyAug 19, 2025
  Your KTM Motorcycle engine might overheat due to a few possible causes. There could be too little coolant in the cooling system, so check the system for leaks and inspect the coolant level in the compensating tank. Also, the radiator fins might be very dirty, so cleaning them could resolve the issue.
C
cindy77Aug 23, 2025
Why is my KTM Motorcycle consuming so much oil?
- A
  ajacksonAug 23, 2025
  High oil consumption in your KTM Motorcycle could stem from several issues. The engine vent hose might be bent, so ensure it's properly routed without bends or replace it if necessary. The engine oil level could be too high, so you should check it. Also, the engine oil might be too thin (low viscosity), so changing the oil and filter and cleaning the oil screens is recommended.
V
vmontgomeryAug 25, 2025
Why does my KTM RC 390 2020 Motorcycle 12V battery keep dying?
- K
  Kenneth JenkinsAug 26, 2025
  If your KTM Motorcycle's 12V battery keeps discharging, it could be because the ignition was not switched off when the vehicle was parked. In this case, charge the 12-V battery. Another possibility is that the alternator is not charging the 12-V battery, so you should check the charging voltage and the open-circuit current.
M
Michelle TrevinoAug 28, 2025
What to do if my KTM RC 390 2020 Motorcycle engine turns over but won't start?
- K
  Kim CampbellAug 28, 2025
  If your KTM Motorcycle engine turns over but doesn't start, it could be due to an operating error, so you may need to carry out the start procedure. Another potential cause is a malfunction in the electronic fuel injection.
C
Crystal LeeAug 30, 2025
What does it mean when the ABS warning lamp lights up on my KTM RC 390 2020 Motorcycle?
- T
  Thomas DownsAug 30, 2025
  If the ABS warning lamp lights up on your KTM Motorcycle, it could indicate several problems. The ABS fuse might be blown, so you should replace it. It could also be due to a large difference in wheel speeds between the front and rear wheels; in this case, stop the vehicle, switch off the ignition, and start it again. Another possible cause is a malfunction in the ABS.
H
hortonsandraSep 2, 2025
Why aren't the headlight and position light working on my KTM RC 390 2020 Motorcycle?
- R
  Rebekah YoungSep 2, 2025
  If the headlight and position light are not working on your KTM Motorcycle, the cause may be that Fuse 6 is blown. You should change the fuses of individual power consumers.
B
Brian BrownSep 5, 2025
Why aren't the turn signal, brake light, and horn working on my KTM Motorcycle?
- E
  Elizabeth PrinceSep 5, 2025
  If the turn signal, brake light, and horn are not working on your KTM Motorcycle, the cause may be that Fuse 6 is blown. You should change the fuses of individual power consumers.
S
Steve LesterSep 7, 2025
Why is the combination instrument display blank on my KTM Motorcycle?
- V
  Valerie MartinSep 7, 2025
  If the combination instrument display is blank on your KTM Motorcycle, it could be because Fuse 7 is blown. You should change the fuses of individual power consumers.
M
moralesthomasSep 12, 2025
How to fix incorrect time display on my KTM Motorcycle?
- K
  Kimberly ColonSep 12, 2025
  If the time is not correctly displayed on your KTM Motorcycle, it could be due to Fuse 7 being blown. You should change the fuses of individual power consumers.

KTM RC 390 2020 Specifications

General

Brand	KTM
Model	RC 390 2020
Category	Motorcycle
Language	English

Summary

Means of Representation

Symbols Used in Manual

Explains the meaning of specific symbols used throughout the owner's manual for clarity and safety.

Document Formatting Conventions

Describes the typographical formats used in the manual, such as proprietary names and underlined terms.

Safety Advice for KTM RC 390

Intended Use of the Vehicle

Defines the vehicle's designed purpose and limitations for safe road operation.

Understanding Vehicle Misuse

Details actions that constitute misuse of the vehicle and the potential dangers involved.

Following Safety Instructions

Emphasizes the critical importance of reading and adhering to all safety instructions.

Degrees of Risk and Warning Symbols

Identifies different levels of danger (Danger, Warning, Caution) and their associated symbols.

Overview of Vehicle Labels

Illustrates the locations of various information and warning labels attached to the motorcycle.

Reporting Safety Defects

Provides instructions on reporting vehicle safety defects to NHTSA and KTM North America.

Noise Emission Warranty Information

Outlines the warranty coverage for the exhaust system's compliance with noise standards.

Operating Noise Warning

Warns about potential penalties for increased motorcycle noise due to lack of repair.

Exhaust Monitoring System Warranty

Details the manufacturer's warranty for the exhaust monitoring system's components.

Consumer Rights and Warranty Claims

Explains how to submit warranty claims and details consumer rights.

Tampering with Noise Control System

Prohibits tampering with the noise control system and outlines federal laws.

Safe Vehicle Operation Practices

Provides essential guidelines and warnings for operating the motorcycle safely.

Importance of Protective Clothing

Highlights the critical role of appropriate protective clothing for rider safety.

Work Rules and Precautions

Specifies rules and precautions to follow when performing maintenance or repairs.

Environmental Responsibility

Stresses responsible use and disposal of fluids and components for environmental protection.

Owner's Manual Guidance

Emphasizes reading the manual for operation, handling, and safety.

Important Notes for KTM Owners

Warranty and Authorized Service

Specifies warranty conditions and requirements for authorized workshop service.

Fuel, Substances, and Environment

Advises on proper use of fuels, auxiliary substances, and environmental considerations.

Spare Parts and Accessories Policy

Recommends using approved parts and accessories for safety and liability.

Vehicle Service and Maintenance

Explains the importance of proper service for vehicle longevity and performance.

Understanding Manual Figures

Notes that manual figures may show special equipment and may not fully depict disassembly.

Customer Service and Dealer Support

Directs customers to authorized dealers for vehicle-related questions.

View of Vehicle Components

Front Left Component Identification

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

Rear Right Component Identification

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

Vehicle Identification: Serial Numbers

Locating Vehicle Identification Number (VIN)

Details the location of the vehicle identification number stamped on the frame.

Identifying the Vehicle Type Label

Indicates the location of the vehicle type label for identification purposes.

Finding the Engine Number

Specifies the location where the engine number is stamped on the engine.

Key Number and Spare Key Information

Explains how to find the key number on the KEYCODECARD for ordering spare keys.

Motorcycle Controls and Operation

Clutch Lever Operation

Describes the location and function of the clutch lever on the handlebar.

Hand Brake Lever Operation

Details the location and function of the hand brake lever for front brake engagement.

Throttle Grip Function

Identifies the location and purpose of the throttle grip on the handlebar.

Horn Button Operation

Explains the location and possible states of the horn button.

Light Switch Functions

Describes the operation of the light switch for low beam and high beam settings.

High Beam Flasher Button

Explains the location and activation of the high beam flasher button.

Turn Signal Switch Operation

Details the function and operation of the turn signal switch for left and right signals.

Emergency OFF Switch Function

Describes the function and states of the emergency OFF switch for stopping the engine.

Start Button Functionality

Explains the location and possible states of the start button for engine ignition.

Ignition and Steering Lock

Identifies the ignition and steering lock mechanism and its possible states.

Locking the Steering Mechanism

Provides instructions and a note on how to lock the vehicle's steering mechanism.

Unlocking the Steering Mechanism

Details the procedure for unlocking the vehicle's steering mechanism.

Opening the Fuel Tank Filler Cap

Explains how to open the fuel tank filler cap, including safety warnings.

Closing the Fuel Tank Filler Cap

Details the procedure for closing the fuel tank filler cap with safety warnings.

Seat Lock Location and Operation

Indicates the location of the seat lock and how to unlock it using the ignition key.

Tool Set Location

Specifies the location of the tool set within the vehicle's storage compartment.

Grab Handles Usage

Describes the use of grab handles for moving the motorcycle and for passenger support.

Passenger Foot Pegs Functionality

Explains the function and possible states (up/down) of the passenger foot pegs.

Shift Lever Operation and Gear Positions

Shows the location of the shift lever and illustrates gear positions.

Foot Brake Lever Operation

Identifies the location of the foot brake lever for activating the rear brake.

Side Stand Operation and Safety

Explains the function and importance of the side stand, including safety system coupling.

Ergonomics and Adjustments

Adjusting Hand Brake Lever Position

Guides on adjusting the hand brake lever's basic position for rider comfort.

Adjusting Clutch Lever Position

Guides on adjusting the clutch lever's basic position for rider comfort.

Adjusting the Shift Lever

Provides instructions on how to adjust the shift lever for optimal operation.

Combination Instrument Functions

Combination Instrument Overview

Identifies the main components of the motorcycle's combination instrument.

Instrument Activation and Test Sequence

Describes how the instrument activates and the initial system test sequence.

Instrument Warning Indicators

Explains how warnings are displayed on the instrument and indicator lamp functions.

Indicator Lamps Explained

Details the meaning and function of various indicator lamps on the instrument panel.

Shift Warning Light Configuration

Explains the function and configuration of the shift warning light based on engine speed.

Understanding Displayed Information

Identifies various data displays like tachometer, gear, speed, fuel, time, and temperature.

Fuel Level Display Interpretation

Explains how the fuel level is displayed and potential updates or warnings.

Coolant Temperature Indicator

Describes how coolant temperature is indicated and potential warnings for overheating.

Function Buttons Navigation

Details how to use the MODE and SET buttons to navigate through display modes and menus.

TRIP F Display Usage

Explains the TRIP F display for distance traveled since fuel reserve and its related menus.

Info Display for Messages and Warnings

Describes the Info display for showing messages or warnings that have occurred.

ODO Display and Fuel Range

Covers the ODO display for total distance and the Fuel Range menu.

TRIP 1 Display Features

Details the TRIP 1 display for distances since last reset and its time display.

TRIP 1 Average Speed Calculation

Explains how to view and reset the average speed calculation for TRIP 1.

TRIP 1 Average Fuel Consumption

Covers viewing and resetting average fuel consumption for TRIP 1.

TRIP 2 Display Features

Details the TRIP 2 display for distances since last reset and its time display.

TRIP 2 Average Speed Calculation

Explains how to view and reset the average speed calculation for TRIP 2.

TRIP 2 Average Fuel Consumption

Covers viewing and resetting average fuel consumption for TRIP 2.

Setting Measurement Units

Guides on setting measurement units (km/miles, volume) according to country.

Clock Setting Procedure

Provides instructions for setting the motorcycle's clock display.

Adjusting Shift Speed RPM1

Explains how to adjust the RPM threshold for the shift warning light flashing.

Adjusting Shift Speed RPM2

Explains how to adjust the RPM threshold for the shift warning light illuminating.

Preparing for First Use

Initial Use Advice and Safety

Offers critical advice on preparing the motorcycle and rider for the first use, including safety.

Engine Break-in Procedure

Details the proper procedure for running in the engine to ensure longevity.

Vehicle Loading Guidelines

Provides guidelines on how to load the vehicle safely, considering weight distribution.

Pre-Ride Checks and Maintenance

Lists essential checks and maintenance tasks before riding the motorcycle.

Riding Instructions and Safety

Starting the Motorcycle Engine

Guides on the correct procedure for starting the motorcycle's engine.

Safely Starting Off from Standstill

Explains the steps for safely setting off, including clutch and throttle control.

Shifting and Riding Techniques

Offers advice on proper shifting and riding techniques to maintain control and safety.

Applying Brakes Correctly

Details how to apply the brakes effectively and safely, including warnings.

Stopping and Parking Procedures

Provides instructions on how to safely stop and park the motorcycle.

Motorcycle Transport Guidelines

Offers advice and precautions for safely transporting the motorcycle.

Refueling Process and Safety Warnings

Explains the refueling process, fuel types, and critical safety warnings.

Service Schedule and Maintenance

Additional Service Information

Notes on service intervals, dealer information, and potential changes.

Required Maintenance Tasks Schedule

Lists essential maintenance tasks to be performed at specified intervals.

Recommended Maintenance Work

Outlines recommended additional maintenance tasks for optimal vehicle condition.

Chassis Tuning and Adjustments

Adjusting Shock Absorber Preload

Guides on adjusting the spring preload of the rear shock absorber for optimal suspension.

Chassis Service Work Procedures

Raising Motorcycle with Rear Lifting Gear

Details the procedure for lifting the motorcycle using rear lifting gear.

Removing Rear from Lifting Gear

Explains how to safely remove the motorcycle's rear from lifting gear.

Lifting Motorcycle with Front Lifting Gear

Guides on lifting the motorcycle using front lifting gear, including preparatory steps.

Taking Motorcycle Off Front Lifting Gear

Details the procedure for safely removing the motorcycle from front lifting gear.

Cleaning Fork Dust Boots

Provides instructions on cleaning the dust boots of the motorcycle's fork legs.

Removing the Front Rider's Seat

Guides on how to remove the front rider's seat for access to components.

Mounting the Front Rider's Seat

Details the procedure for correctly mounting the front rider's seat.

Removing the Passenger Seat

Explains how to remove the passenger seat, noting preparatory steps.

Mounting the Passenger Seat

Guides on correctly mounting the passenger seat, including securing it.

Checking Chain Dirt Accumulation

Describes how to check the motorcycle chain for dirt accumulation.

Cleaning the Motorcycle Chain

Provides instructions on cleaning the motorcycle chain and related safety warnings.

Checking Chain Tension

Explains how to check and set the correct chain tension for optimal performance and safety.

Adjusting Chain Tension

Details the procedure for adjusting the chain tension according to specifications.

Checking Chain and Sprocket Wear

Guides on inspecting the chain, rear sprocket, and engine sprocket for wear.

Removing the Battery Cover

Provides instructions on how to remove the battery cover for access.

Mounting the Battery Cover

Details the procedure for correctly mounting the battery cover.

Removing the Front Spoiler

Guides on how to remove the motorcycle's front spoiler.

Fitting the Front Spoiler

Details the procedure for correctly fitting the motorcycle's front spoiler.

Removing the Left Side Cover

Guides on how to remove the motorcycle's left side cover.

Installing the Left Side Cover

Details the procedure for correctly installing the motorcycle's left side cover.

Removing the Right Side Cover

Guides on how to remove the motorcycle's right side cover.

Installing the Right Side Cover

Details the procedure for correctly installing the motorcycle's right side cover.

Brake System Maintenance and Checks

Anti-lock Braking System (ABS) Explained

Explains the ABS system, its components, and safety warnings related to its function.

Checking Brake Disc Condition

Guides on checking the thickness and condition of the front and rear brake discs.

Checking Front Brake Fluid Level

Details how to check the front brake fluid level and potential issues.

Adding Front Brake Fluid

Provides instructions on adding front brake fluid, including safety and fluid type recommendations.

Checking Front Brake Lining Wear

Guides on checking the wear and minimum thickness of the front brake linings.

Checking Rear Brake Fluid Level

Details how to check the rear brake fluid level and potential issues.

Adding Rear Brake Fluid

Provides instructions on adding rear brake fluid, including safety and fluid type recommendations.

Checking Rear Brake Lining Wear

Guides on checking the wear and minimum thickness of the rear brake linings.

Checking Foot Brake Lever Free Travel

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

Adjusting Foot Brake Lever Free Travel

Details the procedure for adjusting the foot brake lever's free travel.

Wheels and Tires Maintenance

Removing the Front Wheel

Guides on the safe removal of the motorcycle's front wheel.

Installing the Front Wheel

Details the procedure for correctly installing the motorcycle's front wheel.

Removing the Rear Wheel

Guides on the safe removal of the motorcycle's rear wheel.

Installing the Rear Wheel

Details the procedure for correctly installing the motorcycle's rear wheel.

Checking Rear Hub Damping Rubber Pieces

Explains how to check the rear hub damping rubber pieces for wear and damage.

Checking Tire Condition

Guides on inspecting tires for wear, damage, tread depth, and age.

Checking Tire Pressure

Provides instructions on checking and setting the correct tire pressure for solo and passenger loads.

Electrical System Maintenance

Removing the 12-V Battery Safely

Details the safe procedure for removing the 12-V battery, including warnings.

Installing the 12-V Battery Correctly

Guides on the correct procedure for installing the 12-V battery.

Charging the 12-V Battery

Explains the importance of proper battery charging and methods to prolong battery life.

Changing ABS Fuses

Guides on locating and changing the fuses related to the Anti-lock Braking System.

Changing Fuses for Power Consumers

Details how to change fuses for various electrical components and power consumers.

Changing the Low Beam Bulb

Provides instructions on how to replace the low beam headlight bulb.

Changing the High Beam Bulb

Details how to replace the high beam headlight bulb.

Checking Low Beam Headlight Adjustment

Guides on checking the correct aim and adjustment of the low beam headlight.

Checking High Beam Headlight Adjustment

Guides on checking the correct aim and adjustment of the high beam headlight.

Adjusting Low Beam Headlight Range

Explains how to adjust the range of the low beam headlight.

Adjusting High Beam Headlight Range

Explains how to adjust the range of the high beam headlight.

Diagnostics Connector Location

Indicates the location of the diagnostics connector under the front rider's seat.

Front ACC1 and ACC2 Installation

Describes the installation location for front ACC1 and ACC2 power supplies.

Cooling System Maintenance

Cooling System Overview

Explains the basic operation of the cooling system, including water pump and coolant circulation.

Checking Coolant Level in Compensating Tank

Guides on checking the coolant level in the compensating tank and related safety warnings.

Checking Antifreeze and Coolant Level

Details how to check the antifreeze concentration and overall coolant level.

Correcting Coolant Level in Compensating Tank

Provides instructions for correcting the coolant level in the compensating tank.

Draining the Coolant Safely

Explains the procedure for safely draining the motorcycle's coolant.

Filling and Bleeding the Cooling System

Guides on filling the cooling system with coolant and bleeding air from the system.

Changing the Coolant

Details the process for changing the motorcycle's coolant.

Engine Tuning and Adjustments

Checking Clutch Lever Play

Explains how to check the free play in the clutch lever for proper operation.

Adjusting Clutch Lever Play

Provides instructions on how to adjust the clutch lever play to the specified tolerance.

Engine Service Work Procedures

Checking Engine Oil Level

Guides on how to check the engine oil level correctly while the engine is at operating temperature.

Changing Engine Oil and Oil Filter

Details the procedure for changing the engine oil and oil filter, including cleaning oil screens.

Adding Engine Oil

Provides instructions on how to add engine oil, including oil type and quantity recommendations.

Cleaning and Care Procedures

Motorcycle Cleaning Guidelines

Offers guidelines and warnings for cleaning the motorcycle, especially with pressure washers.

Post-Cleaning Procedures

Details steps after cleaning, like lubricating parts and treating surfaces.

Winter Operation Checks and Maintenance

Lists checks and maintenance steps specifically for preparing the motorcycle for winter operation.

Winter Operation Precautions

Provides advice for operating the motorcycle in winter conditions, focusing on road salt.

Vehicle Storage Guidelines

Motorcycle Storage Procedure

Outlines the steps for preparing and storing the motorcycle for extended periods.

Preparing for Use After Storage

Details the steps required to prepare the motorcycle for use after it has been in storage.

Troubleshooting Common Issues

Fault Diagnosis and Solutions

Addresses common faults like engine start issues, low power, or overheating, and their solutions.

Technical Data and Specifications

Engine Specifications

Lists detailed specifications for the motorcycle's engine, including dimensions and performance data.

Engine Tightening Torques

Provides a table of specific tightening torques for various engine components.

Capacities and Fluid Specifications

Lists the capacities for engine oil, coolant, and fuel, and their specifications.

Chassis and Suspension Specifications

Details specifications related to the motorcycle's chassis, frame, fork, and suspension.

Electrical System Specifications

Lists specifications for the motorcycle's electrical system, including battery and fuses.

Tire Specifications

Provides details on recommended tire sizes, types, and pressure.

Fork and Shock Absorber Details

Lists specifications and article numbers for the front fork and rear shock absorber.

Chassis Tightening Torques

Provides specific tightening torques for various chassis components.

Substance Recommendations

Brake Fluid Recommendations

Specifies the recommended types and standards for brake fluid.

Coolant Specifications

Details the recommended type, properties, and antifreeze protection for coolant.

Engine Oil Specifications

Lists the recommended engine oil type, standard, and supplier.

Fork Oil Specifications

Specifies the recommended type and standards for fork oil.

Fuel Grade Recommendations

Recommends fuel grades and warns against certain fuel types like methanol or high ethanol content.

Auxiliary Substances and Products

Chain Cleaner Product Recommendation

Recommends a specific chain cleaner product for maintenance.

Fuel Stabilizer Product Recommendation

Recommends a specific fuel additive or stabilizer for storage.

Long-Life Grease Product Recommendation

Recommends a specific long-life grease for lubrication points.

Motorcycle Cleaner Product Recommendation

Recommends a specific motorcycle cleaner for washing the vehicle.

Paint Care Product Recommendations

Recommends products for polishing and protecting painted surfaces.

Standards and Classifications

JASO T903 MA2 Standard Explained

Explains the JASO T903 MA2 standard for motorcycle engine oils.

SAE Viscosity Classification

Describes the SAE classification system for engine oil viscosity.

Index of Special Terms

ABS Definition

Defines ABS as an anti-lock braking system that prevents wheel lock-up.

OBD Definition

Defines OBD as an on-board diagnosis system monitoring vehicle electronics.

List of Symbols

Yellow and Orange Warning Symbols

Explains symbols indicating error conditions requiring prompt intervention or active driving aids.

Green and Blue Information Symbols

Explains symbols that reflect informational states, like turn signals or neutral gear.

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