KTM 790 Duke 2019 User Manual (English)

Questions and Answers:

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Dwayne HerreraAug 19, 2025
Why KTM 790 Duke 2019 Motorcycle engine turns but does not start?
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  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.
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Leslie RobersonAug 21, 2025
Why KTM Motorcycle engine does not crank when the electric starter button is pressed?
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  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.
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tbradleyAug 23, 2025
What to do if my KTM 790 Duke 2019 engine overheats?
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  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).
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michaelhensleyAug 26, 2025
What does it mean if the ABS warning lamp lights up on my KTM Motorcycle?
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  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.
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Matthew HughesAug 28, 2025
How to fix a discharged 12V battery on KTM 790 Duke 2019 Motorcycle?
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  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.
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Samantha WatkinsAug 30, 2025
Why does my KTM 790 Duke 2019 engine have too little power?
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  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.
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Zachary ThomasSep 1, 2025
What causes high oil consumption in a KTM 790 Duke 2019 Motorcycle?
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  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.
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Troy GonzalezSep 3, 2025
What to do if my KTM 790 Duke 2019 engine dies during the trip?
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  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.
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Brandy LarsonSep 5, 2025
Why KTM 790 Duke 2019 engine turns only if the clutch lever is drawn?
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  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.
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robinjonesSep 7, 2025
What does it mean when the malfunction indicator lamp lights up on my KTM Motorcycle?
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  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.

KTM 790 Duke 2019 Specifications

General

Displacement	799 cc
Bore x Stroke	88 mm x 65.7 mm
Compression Ratio	12.7:1
Power	105 hp (77 kW) @ 9, 000 rpm
Torque	87 Nm @ 8, 000 rpm
Transmission	6-speed
Fuel System	Electronic Fuel Injection
Rear Suspension	WP monoshock
Front Tire	120/70 ZR 17
Rear Tire	180/55 ZR 17
Seat Height	825 mm
Dry Weight	169 kg
Engine Type	2-cylinder, 4-stroke, parallel twin
Frame	Chromoly-steel trellis frame, powder coated
Front Suspension	WP upside-down fork, 43 mm
Front Brake	2 x 300 mm disc, 4-piston radial fixed caliper
Rear Brake	240 mm disc with single-piston caliper
Fuel Tank Capacity	14 liters
ABS	Bosch 9.1 MP (incl. Cornering-ABS and Supermoto mode)