KTM 390 Duke Maintenance Service Schedule (Interval)

every 48 months
every 24 months
every 12 months
every 20,000 km (12,400 mi)
every 10,000 km (6,200 mi)
after 1,000 km (620 mi)
Read out the fault memory using the KTM diagnostics tool.	○	●	●	●	●	●
Program the shift shaft sensor.	○	●	●
Check that the electrical system is functioning properly.	○	●	●	●	●	●
Check that the brake linings of the front brake are secured. ( p. 79)	○	●	●	●	●	●
Check that the brake linings of the rear brake are secured. ( p. 81)	○	●	●	●	●	●
Check the brake discs. ( p. 76)	○	●	●	●	●	●
Check the brake lines for damage and tightness.	○	●	●	●	●	●
Check the front brake fluid level. ( p. 77)	○	●	●	●
Change the front brake fluid.					●	●
Check the rear brake fluid level. ( p. 79)	○	●	●	●
Change the rear brake fluid.					●	●
Change the engine oil and the oil filter, clean the oil screens. ( p. 107)	○	●	●	●	●	●
Check all hoses (e.g. fuel, cooling, bleeder, drainage hoses, etc.) and sleeves for cracking, tightness, and correct routing.	○	●	●	●	●	●
Empty the drainage hoses.	○	●	●	●	●	●
Check the cables for damage and that there are no kinks in the routing.	○	●	●	●	●	●
Check the frame.			●
Check the link fork.			●
Checking the fork bearing for play.		●	●
Checking the steering head bearing for play.	○	●	●
Check the wheel bearing for play.		●	●
Check the shock absorber and fork for leaks.	○	●	●	●	●	●
Check the tire condition. ( p. 87)	○	●	●	●	●	●
Check tire pressure. ( p. 88)	○	●	●	●	●	●
Check the chain, rear sprocket, and engine sprocket. ( p. 72)		●	●	●	●	●
Check the chain tension. ( p. 70)	○	●	●	●	●	●
Grease all moving parts (e.g. side stand, hand lever, chain, etc.) and check for smooth operation.	○	●	●	●	●	●
Check that the throttle cables are undamaged, routed without kinks, and set cor- rectly.	○	●	●	●	●	●
Check the valve clearance, change the spark plug.			●
Change the air filter, clean the air filter box.		●	●
Check the headlight setting. ( p. 96)	○	●	●
Check the tightness of the safety-relevant screws and nuts which are easily accessi- ble.	○	●	●	●	●	●
Clean the dust boots of the fork legs. ( p. 67)		●	●
Check that the radiator fan is functioning properly.	○	●	●	●	●	●
Check the coolant level. ( p. 100)	○	●	●	●	●
Checking the antifreeze.		●	●		●
Change the coolant. ( p. 104)						●
Final check: Check the vehicle is roadworthy and take a test ride.	○	●	●	●	●	●
Read out the fault memory after the test ride using the KTM diagnostics tool.	○	●	●	●	●	●
Set the service interval display.	○	●	●	●	●	●
Enter electronic proof of service.	○	●	●	●	●	●

How to Check Front Brake Linings on Your KTM

Regularly checking the front brake linings is essential for maintaining your motorcycle’s braking performance. Worn or damaged brake linings can significantly reduce braking efficiency, increasing the risk of accidents.

Steps to Check Brake Linings:

1. Inspect Lining Thickness:
   Ensure the brake lining thickness is at least 1 mm (0.04 in). If it’s below this minimum, replace the linings immediately.

2. Look for Damage or Cracks:
   Examine the linings for any signs of damage or cracking. If found, replace the linings.

3. Ensure Linings Are Secure:
   Confirm that the linings are properly secured. If not, secure them or replace them with new parts.

Keeping your brake linings in good condition is crucial for safe riding. Regular inspections and timely replacements can help prevent brake failure and costly damage to the brake discs.

Checking Brake Disc Thickness

1. Measure Thickness:
   Check the thickness of the front and rear brake discs at multiple points (dimension A).

   Note: Wear occurs primarily at contact surface 1, where the brake linings meet the disc.

2. Brake Disc Wear Limits:

   • Front: Minimum thickness 4.5 mm (0.177 in)
   • Rear: Minimum thickness 4.5 mm (0.177 in)

   If the brake disc thickness is less than the specified value:

   • Replace the front brake disc.
   • Replace the rear brake disc.

3. Inspect for Damage: Check the front and rear brake discs for any signs of damage, cracking, or deformation.

   If the brake disc shows any of these issues:

   • Replace the front brake disc.
   • Replace the rear brake disc.

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This structure makes it easier to understand the steps and actions required during the brake disc inspection process.

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