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KTM 790 Duke 2019 - User Manual

KTM 790 Duke 2019
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OWNER'S MANUAL 2019
790 Duke
Art. no. 3213925en

Table of Contents

Questions and Answers

  • D
    Dwayne HerreraAug 19, 2025
    Why KTM 790 Duke 2019 Motorcycle engine turns but does not start?
    • L
      Laurie TaylorAug 19, 2025
      If your KTM Motorcycle engine turns over but doesn't start, consider these possibilities. First, make sure you are following the correct start procedure. Check fuse 3 and replace it if it's blown. Ensure the plug-in connection of the fuel hose is securely connected. Finally, there may be an error in the electronic fuel injection, which requires reading the fault memory using the KTM diagnostics tool.
  • L
    Leslie RobersonAug 21, 2025
    Why KTM Motorcycle engine does not crank when the electric starter button is pressed?
    • V
      vmooreAug 21, 2025
      If your KTM Motorcycle engine doesn't crank when you press the electric starter, it could be due to several reasons. First, ensure you're following the correct start procedure. The 12V battery might be discharged, requiring a charge and a check of the open-circuit current. Also, check fuses 1, 2, or 3 and the main fuse for any burnout, replacing them if necessary. Finally, verify the ground connection is properly established.
  • T
    tbradleyAug 23, 2025
    What to do if my KTM 790 Duke 2019 engine overheats?
    • S
      Sarah SanfordAug 25, 2025
      If your KTM Motorcycle engine is overheating, there are several potential causes. Start by checking the coolant level and inspecting the cooling system for leaks. Clean any dirt from the radiator fins. Other possible issues include foam formation in the cooling system (in which case you should drain and refill/bleed the system), a buckled or damaged radiator hose (which would need replacement), a faulty thermostat (which needs to be checked), a blown fuse 4, or a defect in the radiator fan system (both of which need to be checked and fixed).
  • M
    michaelhensleyAug 26, 2025
    What does it mean if the ABS warning lamp lights up on my KTM Motorcycle?
    • B
      Brittany RileyAug 26, 2025
      If the ABS warning lamp lights up on your KTM Motorcycle, it could be due to a blown ABS fuse, which you should replace. Another cause might be 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. A malfunction in the ABS could also be the reason, requiring a diagnostic check using the KTM diagnostics tool.
  • M
    Matthew HughesAug 28, 2025
    How to fix a discharged 12V battery on KTM 790 Duke 2019 Motorcycle?
    • G
      Gary HallAug 28, 2025
      If the 12V battery on your KTM Motorcycle is discharged, 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 12V battery, which requires checking the charging voltage and the open-circuit current.
  • S
    Samantha WatkinsAug 30, 2025
    Why does my KTM 790 Duke 2019 engine have too little power?
    • D
      danieljohnsonAug 30, 2025
      If your KTM Motorcycle engine has too little power, it could be due to a very dirty air filter; remove and reinstall the air filter. Another potential cause is a very dirty fuel filter, requiring a check of the fuel pressure. Also, there may be an error in the electronic fuel injection, so read out the fault memory using the KTM diagnostics tool.
  • Z
    Zachary ThomasSep 1, 2025
    What causes high oil consumption in a KTM 790 Duke 2019 Motorcycle?
    • D
      Deanna MitchellSep 1, 2025
      If your KTM Motorcycle has high oil consumption, check the engine vent hose for bends and correct its routing or replace it if needed. Also, verify that the engine oil level isn't too high. If the engine oil is too thin (low viscosity), change the engine oil and oil filter and clean the oil screens.
  • T
    Troy GonzalezSep 3, 2025
    What to do if my KTM 790 Duke 2019 engine dies during the trip?
    • V
      vtateSep 3, 2025
      If your KTM Motorcycle engine dies during a trip, it could be due to a lack of fuel, so refuel. Another possible cause is a blown fuse 1, 2, or 3, in which case you should change the fuses.
  • B
    Brandy LarsonSep 5, 2025
    Why KTM 790 Duke 2019 engine turns only if the clutch lever is drawn?
    • M
      Manuel RomeroSep 5, 2025
      If your KTM Motorcycle engine only turns when the clutch lever is drawn, it's likely because the vehicle is in gear. Shift the transmission to neutral. The same applies if the side stand is folded out while the vehicle is in gear; shift to neutral.
  • R
    robinjonesSep 7, 2025
    What does it mean when the malfunction indicator lamp lights up on my KTM Motorcycle?
    • S
      stephen43Sep 7, 2025
      If the malfunction indicator lamp lights up or flashes on your KTM Motorcycle, it indicates an error in the electronic fuel injection. You will need to read out the fault memory using the KTM diagnostics tool.

Summary

Safety Advice

Intended Use and Misuse

Defines proper usage and warns against improper operation of the vehicle.

Risk and Symbol Definitions

Details severity levels (Danger, Warning, Note) and associated warning symbols.

Safe Operation

Provides critical instructions for safe riding, including rider fitness and hazards.

Important Notes

Manufacturer Warranty and Service

Details warranty coverage conditions and the requirement for authorized service.

Fuel, Auxiliary Substances, and Parts

Serial Numbers

Vehicle Identification Number

Locates and describes the VIN, essential for vehicle identification and registration.

Key Number and Engine Number

Controls

Handlebar Controls Overview

Identifies and describes primary controls on the left and right handlebars.

Ignition and Steering Lock

Preparing for Use

First Use Advice and Safety

Provides essential advice and warnings before the initial ride of the motorcycle.

Engine Break-in Procedure

Riding Instructions

Pre-Ride Checks

Lists essential checks and maintenance measures before operating the vehicle.

Vehicle Starting and Operation

Guides on how to safely start the engine and begin riding the motorcycle.

Shifting and Braking Techniques

Provides instructions on proper gear shifting and braking methods for safe riding.

Refueling Procedures

Service Schedule

Required Maintenance Work

Lists mandatory maintenance tasks and their recommended intervals for the vehicle.

Brake System

ABS System Overview and Function

Explains the Anti-lock Braking System and its operational principles.

Brake Disc and Lining Checks

Brake Fluid Level and Additives

Wheels and Tires

Tire Condition and Pressure Checks

Explains how to inspect tire condition, tread depth, and set correct pressure.

Tuning the Engine

Ride Mode Settings

Traction Control and Slip Adjustment

Details the Motorcycle Traction Control (MTC) system and slip adjustment features.

Service Work on the Engine

Engine Oil Level and Replacement

Guides on checking engine oil level and performing oil and filter changes.

Troubleshooting

Engine Starting and Performance Issues

Lists common engine starting and performance problems with possible causes and actions.

Warning Lamp and Indicator Problems

KTM 790 Duke 2019 Specifications

General IconGeneral
Displacement799 cc
Bore x Stroke88 mm x 65.7 mm
Compression Ratio12.7:1
Power105 hp (77 kW) @ 9, 000 rpm
Torque87 Nm @ 8, 000 rpm
Transmission6-speed
Fuel SystemElectronic Fuel Injection
Rear SuspensionWP monoshock
Front Tire120/70 ZR 17
Rear Tire180/55 ZR 17
Seat Height825 mm
Dry Weight169 kg
Engine Type2-cylinder, 4-stroke, parallel twin
FrameChromoly-steel trellis frame, powder coated
Front SuspensionWP upside-down fork, 43 mm
Front Brake2 x 300 mm disc, 4-piston radial fixed caliper
Rear Brake240 mm disc with single-piston caliper
Fuel Tank Capacity14 liters
ABSBosch 9.1 MP (incl. Cornering-ABS and Supermoto mode)

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