KTM 450 SMR 2021 User Manual (English)

Other manuals for KTM 450 SMR 2021

Questions and Answers:

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Kristi WeaverAug 2, 2025
What to do if KTM 450 SMR 2021 Motorcycle engine turns over but won't start?
- J
  Jeffrey BellAug 2, 2025
  If your KTM Motorcycle engine turns but does not start, several factors could be the cause. Ensure the quick release coupling is joined. If the fuel screen in the quick release coupling is clogged, change it. Adjust the idle speed if it is not set correctly. If the spark plug is oily or wet, clean and dry it, or replace it if necessary. Also, ensure the plug gap of the spark plug is correctly adjusted to 0.8 mm (0.031 in). Check the wiring harness for frayed short-circuit cables and the stop button for faults. Finally, if there's a malfunction in the electronic fuel injection, read out the fault memory using the KTM diagnostics tool.
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Ryan ShafferAug 6, 2025
What to do if malfunction indicator lamp lights up on KTM 450 SMR 2021 Motorcycle?
- L
  Laura Todd DDSAug 6, 2025
  If the malfunction indicator lamp lights up or flashes on your KTM Motorcycle, stop the motorcycle and identify the faulty component using the blink code. Check the wiring for damage and the electrical plug-in connections for corrosion and damage. Also, read out the fault memory using the KTM diagnostics tool to diagnose any errors in the electronic fuel injection.
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Daniel JonesAug 10, 2025
How to fix KTM 450 SMR 2021 Motorcycle if engine does not turn?
- A
  Amy MitchellAug 10, 2025
  If your KTM Motorcycle engine does not turn when you press the start button, it could be due to several reasons. You may need to carry out the start procedure. The 12 V battery might be discharged, requiring you to charge it, check the charging voltage, the open-circuit current, and the stator winding of the alternator. It's also possible that the main fuse is blown, which means you should change the main fuse. The starter relay or the starter motor could also be defective, so you should check those as well.
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Francisco WilliamsAug 15, 2025
Why does my KTM 450 SMR 2021 engine overheat?
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  Diana BrownAug 15, 2025
  If your KTM Motorcycle engine overheats, it could be due to several reasons. First, check the coolant level and look for any leakage in the cooling system. If the coolant level is low, add more coolant. Ensure there is sufficient air stream; switch off the engine when standing. Clean the radiator fins if they are very dirty. If there's foam formation in the cooling system, drain and refill the coolant. Finally, check the radiator hose and change it if it's bent.
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Kathryn HancockAug 19, 2025
Why does my KTM 450 SMR 2021 Motorcycle have no power?
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  Shaun ClarkAug 19, 2025
  If your KTM Motorcycle engine has too little power, start by cleaning the air filter and air filter box. If the fuel filter is very dirty, change it. If there is a malfunction in the electronic fuel injection, read out the fault memory using the KTM diagnostics tool. Check the exhaust system for damage; change the glass fiber yarn filling of the main silencer if needed. Lastly, adjust the valve clearance if it's too little.
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pdavisAug 23, 2025
Why is my KTM 450 SMR 2021 consuming so much oil?
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  Dawn TapiaAug 23, 2025
  High oil consumption in your KTM Motorcycle can be attributed to several causes. Ensure the engine vent hose is routed without bends, or replace it if necessary. Check the engine oil level; if it's too high, adjust it. If the engine oil is too thin, change the engine oil and the oil filter, and clean the oil screens. Lastly, worn piston or cylinder can also cause high oil consumption, so measure the piston/cylinder mounting clearance.
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Maureen ThomasAug 27, 2025
Why is my KTM 450 SMR 2021 battery draining?
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  Brian StewartAug 28, 2025
  If the 12 V battery is discharged on your KTM Motorcycle, it could be due to a couple of reasons. The 12 V battery may not be charging, so check the charging voltage and the stator winding of the alternator. Another possibility is an unwanted power consumer, in which case you should check the open-circuit current.

KTM 450 SMR 2021 Specifications

General

Displacement	449.9 cc
Bore x Stroke	95 mm x 63.4 mm
Compression Ratio	12.75:1
Power	63 hp
Transmission	5-speed
Starter	Electric starter
Cooling	Liquid cooling
Rear Suspension	WP XACT Monoshock
Ground Clearance	370 mm
Engine Type	Single-cylinder, four-stroke
Fuel System	Electronic fuel injection
Frame	Chromium-molybdenum steel
Front Suspension	WP XACT 48 mm
Front Brake	310 mm Disc
Rear Brake	220 mm Disc
Tank Capacity	7.5 liters
Fuel Tank Capacity	7.5 liters