KTM SX‑F 350 2021 Owner's Manual

KTM SX‑F 350 2021 Motorcycle manual cover
Pages 160
Year 2021
Language(s)
English en

KTM SX‑F 350 2021 Motorcycle Specification

The KTM SX‑F 350 2021 represents a perfect blend of power and agility, making it a formidable contender in the motocross segment. Engineered with a 349.7 cc single-cylinder, 4-stroke engine, this motorcycle delivers a dynamic performance that bridges the gap between the 250 cc and 450 cc classes. The engine features a cutting-edge Keihin Engine Management System with a 44 mm throttle body, ensuring precise fuel injection and optimal power delivery across all RPM ranges. Its DOHC (Double Overhead Camshaft) configuration, along with lightweight titanium valves and a CP forged box-in-box piston, maximizes efficiency and durability.

The chassis is constructed from a central double-cradle-type 25CrMo4 steel frame, offering an ideal balance of rigidity and flex for superior handling and stability. The bike is equipped with WP XACT suspension components, including a 48 mm front fork and a rear shock with linkage, both providing exceptional damping characteristics and adjustability to cope with various track conditions. The braking system comprises high-performance Brembo components, with a 260 mm front disc and a 220 mm rear disc, ensuring reliable stopping power.

Weighing in at just 99.5 kg, the KTM SX‑F 350 2021 boasts a lightweight design that enhances maneuverability and rider control. The ergonomics are fine-tuned for competitive racing, featuring a flat seat profile and a high-grip seat cover for optimal rider movement and comfort. The bodywork integrates seamlessly with the bike’s overall design, offering minimal drag and maximum rider interface.

Advanced electronics, including a launch control system and a handlebar-mounted map select switch, provide riders with the ability to tailor the bike’s performance to their preference and track conditions. The KTM SX‑F 350 2021 is not just a motorcycle; it’s a high-performance machine crafted for serious competitors demanding excellence in every ride.

KTM SX‑F 350 2021 Motorcycle F.A.Q.

How do I properly break in my KTM SX-F 350 2021 engine?

To break in the engine, ride the motorcycle at varying RPMs and avoid full throttle for the first 1-2 hours of operation. Gradually increase the load and avoid prolonged high-speed runs. After the break-in period, change the oil and check for any loose bolts or fasteners.

What is the recommended oil type and change interval for the KTM SX-F 350 2021?

Use a high-quality, fully synthetic 10W-50 4-stroke motorcycle oil. Change the oil and oil filter every 10 hours of operation or after every race for optimal performance and engine longevity.

How can I adjust the suspension settings for different terrains on the KTM SX-F 350 2021?

Adjust the suspension by tuning the fork and shock settings. For softer terrain, decrease compression damping; for hard terrain, increase it. Rebound damping should be set to allow the suspension to return quickly enough to handle successive bumps but not so fast that it causes instability.

What are the common troubleshooting steps if the KTM SX-F 350 2021 won't start?

First, check the fuel level and ensure the fuel is fresh. Verify that the battery is charged and the terminals are clean and tight. Inspect the spark plug for fouling or damage, and ensure the kill switch is in the 'run' position.

How do I maintain the air filter on the KTM SX-F 350 2021?

Remove the air filter after every ride, especially in dusty conditions. Clean it with a non-flammable solvent, let it dry, and apply a thin layer of air filter oil. Ensure it is properly seated when reinstalling to prevent dirt ingress.

What should I check if the KTM SX-F 350 2021 engine is overheating?

Check the coolant level and top it up if necessary. Inspect the radiator for blockages or damage. Ensure the water pump is functioning correctly and that the fan (if equipped) is operational.

How do I adjust the chain tension on my KTM SX-F 350 2021?

Place the bike on a stand and adjust the chain tension so there is about 55-70mm of slack measured at the midpoint of the chain. Loosen the axle nut, adjust the tensioners evenly on both sides, and then tighten the axle nut to the specified torque.

What are the steps for changing the spark plug on the KTM SX-F 350 2021?

Remove the seat and fuel tank to access the engine. Disconnect the spark plug cap and use a spark plug wrench to remove the old plug. Install the new plug, ensuring it is properly gapped, and torque it to the manufacturer's specifications.

How do I troubleshoot electrical issues on the KTM SX-F 350 2021?

Start by checking all fuses and connections for corrosion or damage. Test the battery voltage and ensure it is charged. Inspect wiring for any signs of wear or damage, and verify that switches and sensors are functioning correctly.

What are the routine maintenance tasks I should perform on my KTM SX-F 350 2021?

Regular maintenance includes checking and adjusting valve clearances, lubricating cables and pivots, inspecting brake pads and fluid, tightening bolts, and checking tire pressure and condition. Clean and lubricate the chain after every ride.