KTM 400 EXC EU 2010 User Manual (English)

Questions and Answers:

A
adamsnyderJul 31, 2025
What to do if my KTM 400 EXC EU 2010 Motorcycle engine turns but does not start?
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  luis42Jul 31, 2025
  If your KTM Motorcycle engine turns but doesn't start, several factors could be at play. It might be an operating error, so review the starting procedure. If the motorcycle sat unused for a while, old fuel in the float chamber could be the issue; in this case, empty the carburetor float chamber. A flooded engine or a spark plug that's oily or wet can also prevent starting; clean and dry the spark plug, replacing it if needed. Finally, check the spark plug electrode gap and adjust it to the recommended 0.9 mm (0.035 in) if it's too wide.
N
Nancy MitchellAug 10, 2025
Why my KTM 400 EXC EU 2010 Motorcycle engine cannot be cranked?
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  Jonathan WhiteAug 10, 2025
  If the engine of your KTM Motorcycle cannot be cranked using the electric starter, several issues could be the cause. You may be experiencing an operating error, so go through the starting procedure steps. Alternatively, the battery may be discharged, requiring you to recharge it. Lastly, a blown fuse could be the problem; in that case, remove and install the fuse.
T
thomasamberAug 19, 2025
How to fix KTM Motorcycle engine that has no idle?
- O
  oelliottAug 20, 2025
  If your KTM Motorcycle engine has no idle, it could be due to several reasons. The idling jet might be blocked; check and adjust the carburetor components. Also, the adjusting screws on the carburetor might be distorted; in that case, adjust the idle speed. A defective spark plug could also be the culprit; change the spark plug.

KTM 400 EXC EU 2010 Specifications

General

Engine Type	Single cylinder, 4-stroke
Torque	35 Nm
Ignition	Kokusan digital
Transmission	6-speed
Front Suspension	WP USD 48 mm
Rear Suspension	WP PDS shock absorber
Front Brake	260 mm disc
Front Tire	90/90-21
Rear Tire	140/80-18
Starter	Electric
Compression Ratio	11.8:1
Bore x Stroke	89 mm x 64 mm
Cooling	Liquid
Fuel Capacity	8.5 liters
Fuel System	Keihin FCR-MX 39
Wheelbase	1, 475 mm