KTM 790 DUKE 2018 User Manual (English)

Other manuals for KTM 790 DUKE 2018

Questions and Answers:

K
Kathryn YoderAug 21, 2025
Why KTM Motorcycle engine does not crank when the electric starter button is pressed?
- C
  clewisAug 21, 2025
  If the KTM Motorcycle engine doesn't crank when you press the electric starter, it could be due to several reasons. You might not be following the correct start procedure. The battery could be discharged, requiring a recharge or a check of the open-circuit current. A fuse (1, 2, or 3) might be blown, necessitating a fuse replacement. The main fuse could also be burned out, requiring replacement. Finally, there might be no ground connection, which needs to be checked.
S
shawntaylorAug 23, 2025
What to do if ABS indicator lamp lights up on my KTM 790 DUKE 2018?
- V
  Victoria PerezAug 23, 2025
  If the ABS indicator lamp lights up on your KTM Motorcycle, it could be due to a blown ABS fuse, which requires replacement. It may also indicate 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. Alternatively, there could be a malfunction in the ABS, which would require reading out the ABS fault memory using the KTM diagnostics tool.
J
Jeffrey HartAug 26, 2025
What to do if my KTM Motorcycle engine dies during the trip?
- L
  Lindsey MarksAug 26, 2025
  If your KTM Motorcycle engine dies during a trip, it could be due to a lack of fuel, so you should refuel. Another cause could be a blown fuse (1, 2, or 3), in which case you should change the fuses.
P
pauldavisAug 27, 2025
Why my KTM 790 DUKE 2018 engine overheats?
- B
  Brian SmithAug 27, 2025
  Your KTM Motorcycle engine may overheat for several reasons. There might be too little coolant in the cooling system, so check for leaks and the coolant level in the compensating tank. Very dirty radiator fins can also cause overheating, so clean them. Other potential issues include foam formation in the cooling system (drain and refill/bleed the system), a buckled or damaged radiator hose (replace the hose), a faulty thermostat (check the thermostat), a blown fuse 4 (replace the fuse), or a defect in the radiator fan system (check the system).
L
Leslie StarkAug 29, 2025
Why is my KTM 790 DUKE 2018 battery discharged?
- S
  Scott NashAug 30, 2025
  Your KTM Motorcycle battery might be discharged if the ignition was not switched off when the vehicle was parked; in this case, recharge the battery. Another reason could be that the battery is not being charged by the alternator; check the charging voltage and the open-circuit current.
J
jacob31Sep 1, 2025
What does it mean if malfunction indicator lamp lights up or flashes on my KTM 790 DUKE 2018?
- Y
  ybrewerSep 1, 2025
  If the malfunction indicator lamp lights up or flashes on your KTM Motorcycle, it indicates a defect in the fuel injection system. To address this, read out the fault memory using the KTM diagnostics tool.
J
Jennifer ShermanSep 3, 2025
How to fix high oil consumption in KTM 790 DUKE 2018?
- E
  ericjensenSep 3, 2025
  If your KTM Motorcycle has high oil consumption, check the following: * Ensure the engine vent hose is not bent; straighten it or replace it if necessary. * Verify that the engine oil level is not too high. * Consider that the engine oil might be too thin (low viscosity); change the engine oil and oil filter, and clean the oil screens.
S
smithkennethSep 5, 2025
What to do if headlight and position light are not functioning on KTM 790 DUKE 2018 Motorcycle?
- A
  Angela RussoSep 5, 2025
  If the headlight and position light are not working on your KTM Motorcycle, the fuse 6 may be blown. Replace the fuse.
M
Matthew TorresSep 7, 2025
What to do if turn signal, brake light, and horn are not functional on my KTM Motorcycle?
- D
  David HowellSep 7, 2025
  If the turn signal, brake light, and horn are not functional on your KTM Motorcycle, it is possible that fuse 5 is blown. Replace the fuse.
M
Malik SullivanSep 9, 2025
Why KTM Motorcycle engine turns only if the clutch lever is drawn?
- A
  Alexis SmithSep 9, 2025
  If the KTM Motorcycle engine only turns when the clutch lever is drawn, it's likely because the vehicle is in gear. Shift the gear to neutral.

KTM 790 DUKE 2018 Specifications

General

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