KTM 990 Supermoto T User Manual (English)

Questions and Answers:

A
anthonybaldwinAug 18, 2025
Why is my KTM 990 Supermoto T Motorcycle engine overheating?
- S
  Stephanie Hernandez MDAug 18, 2025
  If the engine of your KTM Motorcycle overheats, it could be due to several reasons. You might have too little coolant in the cooling system, in which case you should check for leaks and verify the antifreeze and coolant level. Dirty radiator fins can also cause overheating, so ensure they are clean. Other potential causes include foam formation or air in the cooling system, a buckled or damaged radiator hose (which should be replaced), a blown FAN fuse (replace it), a defective thermostat (check it), or a defect in the radiator fan system (check it).
W
Wendy HoffmanAug 21, 2025
What to do if my KTM Motorcycle engine won't turn over?
- M
  Mary PetersenAug 21, 2025
  If the engine of your KTM Motorcycle doesn't turn when you press the starter button, it could be due to several reasons. You may need to follow the correct start procedure. The battery might be discharged, so recharge it. A fuse (IGNITION, FUEL PUMP, or POWER RELAY) could be blown, so replace it. The main fuse might also be burned out, so replace that as well. Other potential issues include a defective ignition/steering lock or emergency OFF switch (check them), a defect in the safety start system (check it), an unactivated immobilizer control unit (activate it), a malfunction in CAN bus communication (check it), a defective combination instrument (check it), or a defective control unit for the electric start lock (check it).
B
Bradley RamirezAug 23, 2025
What to do if my KTM 990 Supermoto T engine dies while riding?
- A
  Alexander HolmesAug 23, 2025
  If your KTM Motorcycle engine dies during a trip, it could be due to a lack of fuel, so refuel. Alternatively, the IGNITION, FUEL PUMP, or POWER RELAY fuse may have blown, so replace the fuse.
H
hjacksonAug 26, 2025
Why does my KTM 990 Supermoto T have low power?
- J
  Jennifer CrawfordAug 26, 2025
  If your KTM Motorcycle has too little power, the air filter may be very dirty, so change it. There could also be a defect in the fuel injection system; use the KTM diagnostics tool to read out the fault memory. Another possibility is that the ignition curve for low octane fuel is activated, so refuel with fuel with an octane rating of 95 or higher and connect the plug-in connector.
S
Scott BeckAug 27, 2025
What does it mean when the FI (MIL) warning lamp lights up on my KTM 990 Supermoto T Motorcycle?
- C
  crystal62Aug 28, 2025
  If the warning lamp FI (MIL) lights up or flashes on your KTM Motorcycle, it indicates a defect in the fuel injection system. You should read out the fault memory using the KTM diagnostics tool.
K
katherinecannonAug 30, 2025
Why is my KTM Motorcycle using so much oil?
- E
  Erika StanleyAug 30, 2025
  A high oil consumption in your KTM Motorcycle could mean that the engine oil level is too high, so check it. It could also mean that the engine oil is too thin (low viscosity), in that case change the engine oil and filter, and clean the oil screens.
A
Alexis ScottSep 1, 2025
Why does my KTM 990 Supermoto T only start when I pull the clutch?
- T
  Thomas WalkerSep 1, 2025
  If the engine of your KTM Motorcycle turns only when the clutch lever is drawn, it could be because the vehicle is in gear, so shift the transmission to neutral. It could also be due to a defect in the safety start system, so check the safety start system.
J
James WyattSep 4, 2025
Why aren't the headlight and parking light working on my KTM 990 Supermoto T?
- W
  Wendy SimonSep 4, 2025
  If the headlight and parking light are not functioning on your KTM Motorcycle, it is possible that the Fuse H/L BEAM, POSITION is blown, so replace the fuse.
A
Angela VasquezSep 6, 2025
Why aren't the turn signals, brake light and horn working on my KTM 990 Supermoto T?
- T
  Theodore BradySep 6, 2025
  If the turn signal, hazard warning flasher, brake light, and horn are not functional on your KTM Motorcycle, the Fuse HORN, BRAKE LIGHT, SPEEDO may be blown, so replace the fuse.
K
kenneth84Sep 8, 2025
Why is the combination instrument display blank on my KTM 990 Supermoto T?
- M
  Mallory ParkerSep 8, 2025
  If the combination instrument on your KTM Motorcycle shows nothing in the display, the Fuse ACC1, CLOCK may be blown, so replace the fuse.

KTM 990 Supermoto T Specifications

General

Brand	KTM
Model	990 Supermoto T
Category	Motorcycle
Language	English

Summary

Welcome and Vehicle Identification

Vehicle Identification Numbers

Fields for entering chassis, engine, and key numbers for vehicle identification.

Understanding Manual Symbols and Formats

Manual Symbol Guide

Explains the meaning of symbols used throughout the owner's manual.

Manual Format Conventions

Describes typographical formats like proprietary and protected names.

Important Information for Motorcycle Owners

Motorcycle Usage Guidelines

Defines intended use of KTM sport motorcycles for road operation, not off-road or racing.

Maintenance and Warranty Information

Stresses importance of maintenance for fault-free operation and warranty validity.

Recommended Fluids and Accessories

Advises using specified fuels, lubricants, and KTM-approved spare parts.

Workshop Guidelines and Transport Safety

Covers special tools, part replacement, and safe transport procedures.

Environmental Responsibility

Encourages responsible and legal use of the motorcycle with environmental consciousness.

Identifying Vehicle Components

Vehicle Components - Front Left View

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

Vehicle Components - Rear Right View

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

Locating Serial Numbers and Keys

Chassis and Type Label Locations

Details the locations of the chassis number and type labels on the vehicle.

Key Number and Security

Explains how to find the key number and the importance of the key code card.

Motorcycle Controls and Instrumentation

Motorcycle Handlebar Controls

Describes the function and operation of all controls located on the handlebars.

Digital Instrument Cluster Operations

Explains the features, displays, settings, and indicators of the instrument panel.

Other Motorcycle Controls and Features

Covers filler cap, seat lock, handrails, footrests, tool storage, and side stand.

Tips for Initial Motorcycle Operation

Initial Operation Safety Precautions

Provides safety advice for the first ride, including rider condition and protective gear.

Engine Break-In and Vehicle Loading

Guides on engine break-in procedures and safe vehicle loading practices.

Riding Instructions and Safety

Pre-Ride Inspection Checklist

Lists essential checks before operating the motorcycle for safety.

Motorcycle Starting and Riding Techniques

Covers safe starting procedures and basic riding techniques like shifting and braking.

Braking and Parking Guidelines

Details safe braking practices and instructions for stopping and parking the vehicle.

Fueling and Fuel Safety

Provides instructions and safety warnings for refueling the motorcycle.

Service Schedule and Intervals

Motorcycle Service Schedule

Outlines required maintenance tasks at specific mileage or time intervals.

Maintenance Work on Frame and Engine

Chassis and Suspension Servicing

Covers lifting the motorcycle, work stand use, and suspension adjustments.

Drivetrain and Brake System Servicing

Details chain, sprocket, brake disc, fluid, and lining maintenance.

Wheel, Tire, and Electrical System Service

Procedures for wheel/tire service and maintenance of battery, fuses, and bulbs.

Cooling, Fuel, and Engine Oil System Maintenance

Covers coolant system service, fuel tank, and engine oil changes.

Ignition and Other Engine Maintenance

Details ignition curve adjustment and other engine-related maintenance tasks.

Technical Data - Engine

Engine Technical Specifications

Provides detailed specifications for the engine design, dimensions, and control systems.

Engine Oil and Coolant Capacities

Lists the required capacities for engine oil and coolant.

Technical Data - Engine Tightening Torques

Engine Fastener Tightening Torques

Specifies torque values for various engine screws and nuts during assembly.

Technical Data - Chassis

Chassis Component Specifications

Details frame, suspension, brake system, and tire specifications.

Lighting Equipment and Fuse Ratings

Lists specifications for lights and fuse ratings used in the vehicle.

Tire and Fuel Tank Specifications

Provides tire details and fuel tank capacity and reserve information.

Technical Data - Fork

Supermoto R Fork Adjustment Details

Specific settings for compression, rebound, and spring preload for the Supermoto R fork.

Supermoto T Fork Adjustment Details

Specific settings for compression, rebound, and spring preload for the Supermoto T fork.

Technical Data - Shock Absorber

Supermoto R Shock Absorber Adjustment

Detailed settings for compression, rebound, and spring preload for the Supermoto R shock absorber.

Supermoto T Shock Absorber Adjustment

Detailed settings for compression, rebound, and spring preload for the Supermoto T shock absorber.

Technical Data - Chassis Tightening Torques

Chassis Component Torque Specifications

Specifies torque values for various chassis screws and nuts during assembly.

Recommended Substances and Fluids

Recommended Brake Fluid and Coolant

Lists recommended brake fluid types and coolant mixture ratios.

Engine Oil and Hydraulic Fluid Specifications

Recommends specific engine oils and hydraulic fluids for the vehicle.

Fork Oil and Shock Absorber Fluid Types

Specifies the types of oils for the fork and shock absorber.

Auxiliary Substances for Maintenance

Recommended Cleaning and Lubrication Products

Lists recommended products for chain cleaning, lubrication, and metal care.

Technical Standards Explained

JASO T903 MA Standard Explained

Explains the JASO T903 MA standard for motorcycle engine oils.

SAE Viscosity Classification Explained

Describes the SAE standard for classifying oil viscosity.

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