KTM 390 Adventure (2020+) Maintenance Schedule

This is the maintenance schedule and service intervals for the KTM 390 Adventure, KTM’s smallest bike in their adventure line in most markets (there’s also a KTM 250 Adventure in some).

It uses the same engine block as in the KTM RC 390 and KTM 390 Duke, so the maintenance schedule has a lot in common. The 390 Adventure is powered by a single-cylinder liquid-cooled fuel-injected engine that makes peak power of 32 kW (43 hp) at 9000 rpm, with 37 Nm (27 ft-lb) of peak torque, with 80% of that available across most of the rev range. Final drive is via a chain.

The 390 Adventure was built to compete in the compact adventure sports market, alongside other bikes like the Versys-X 300.

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KTM 390 Adventure Service Intervals

The KTM 390 Adventure has a 4650 mile / 7500 km or annual minor service interval, and a 9300 mile / 15000 km major service interval.

At the minor service, change the oil and air filter, and run over the list of checks for leaks, wear, and degraded materials (e.g. rubber hoses).

At the major service, change the spark plug and check the valve clearances. You only need to do this major service at the distance interval.

Make sure to keep the coolant and brake fluid fresh per the rest of the schedule. An easy way to do this is every two minor services.

What you need to service your KTM 390 Adventure

Servicing your 390 Adventure is fairly easy, as it’s a single-cylinder engine with exposed parts. So when the valve service comes up every 15000 km / 9300 mi it’s not an overwhelming task.

Aside from basic motorcycle maintenance tools, here’s what you need to service your 390 Adventure.

PartKTM 390 Adventure spec
Engine oilThe manual requires SAE 15W-50 oil that meets JASO T903 MA2 spec, and recommends Motorex oils, e.g. Motorex Top Speed 15W-50, a full synthetic.
Oil filterUse a Hiflofiltro HF155 as a high-quality drop-in replacement.
Spark plugStandard spark plug is a Bosch VR6NEU, which is quite hard to find other than from KTM dealers.
Fork oilUse SAE 4 fork oil, e.g. Motorex 4W Fork Oil which KTM recommends.
Air filterUse a K&N KT-1217 air filter.
Brake fluidUse a DOT 4 fluid e.g. Castrol DOT 4 full synthetic.
CoolantThe manual calls for Motorex Coolant M3.0, which is an OAT coolant based on ethylene glycol that’s silicate, nitrite, amine, borate, and phosphate free. (Most coolants contain at least phosphates or silicates… be wary)
Clutch cable lubeUse either engine oil or Protect all cable life, an affordable and quality lubricant.
Chain maintenanceUse Motul chain paste, a low-mess, high-quality chain lube. The manual recommends the more expensive Motorex chain lube.
GreaseThe manual recommends Motorex Bike Grease 2000 although you can use any lithium soap-based grease.
KTM 390 Adventure parts for service

Maintenance schedule for the KTM 390 Adventure

The schedule below comes straight from the manual, though it has been formatted slightly for legibility.

The maintenance schedule for the KTM 390 Adventure comes in two parts: required work and recommended work.

KTM recommends most of the work be done by mechanics, and users only do the following:

  • Check brakes (maybe replace if necessary)
  • Check/adjust tyre pressures
  • Check/adjust chain tension
  • Check coolant and brake fluid levels

And very little else. Of course, servicing the 390 Adventure isn’t hard as a single-cylinder mostly-naked bike, so it’s up to you.

Required work

The required service has a break-in service, a 7500km (4650 mi) service, and a 15000 km (9300 mi) service. The last two services are repeated every 7500 and 15000 km respectively.


  • Some items are every 1-2 years (e.g. fluids that degenerate). Attend to each item whenever the sooner of the distance or time interval has arrived.
  • Items marked [Dealer] require specialist tools.
000 miles0.624.659.3
000 km17.515Every
[Dealer] Read out the fault memory using the KTM diagnostics toolYear
[Dealer] Program the shift shaft sensor
Check that the electrical system is functioning properly.Year
Change the engine oil and the oil filter, clean the oil screens (Motorex Top Speed 15W-50, HF155)Year
Check the brake discsYear
Check the front brake liningsYear
Check the rear brake liningsYear
Check the brake lines for damage and leakageYear
Check the front brake fluid level (Castrol DOT 4)Year
Check the rear brake fluid levelYear
Check the tire conditionYear
Check tire pressureYear
Check the shock absorber and fork for leaksYear
Clean the dust boots of the fork legs
Check the chain, rear sprocket, and engine sprocketYear
Check the chain tension
(See below)
Check the coolant level (Motorex Coolant M3.0)Year
Check that the radiator fan is functioning properly.Year
Change the air filter, clean the air filter box
Chek that the throttle cables are undamaged, routed without sharp bends, and set correctlyYear
Check the cables for damage and routing without sharp bendsYear
Change the spark plug
Check the valve clearance
Change the front brake fluid (DOT 4)2 years
Change the rear brake fluid (DOT 4)2 years
Check the steering head playYear
Check the headlight setting
Final check: Check the vehicle for safe operationa nd take a test rideYear
[Dealer] Set the service interval displayYear
[Dealer] Read out the error memory after the test ride using the KTM diagnostics toolYear
[Dealer] Make a service entry in KTMDealer.netYear
KTM 390 Adventure maintenance – required work

Recommended work

Recommended service has different intervals to the above required service. It’s every 7500 km (4650 mi) or 30000 km (18600 mi), or every 1 or 4 years. Attend to each item whenever the sooner of the distance or time interval has arrived.

000 km17.530
000 miles0.624.6518.6Every
Check the frame
Check the link fork
Check the fork bearing for play
Check the wheel bearing for play
Check the antifreezeYear
Change the coolant (Motorex Coolant M3.0)4 years
Empty the drainage hosesYear
Check all hoses (fuel, coolant, drainage etc.) and sleeves for cracking, leaks, and incorrect routingYear
Grease all moving parts (e.g. side stand, hand lever, chain) and check for smooth operation (Motorex 2000)Year
Check the tightness of the safety-relevant screws and nuts which are easily accessible.Year
KTM 390 Adventure maintenance – recommended work

KTM 390 Chain Tension Adjustment

KTM 390 adventure chain tension diagram
KTM 390 adventure chain tension diagram

To check / adjust the chain tension, you need:

  • A paddock stand (unless you have a centre stand fitted)
  • Large torque wrench, and a socket set or wrenches
  • A cloth rag
  • Nitrile gloves or mechanic gloves (things get messy and chain lubricant is heavy)

Follow this proceture

  1. Raise the motorcycle using a paddock stand.
  2. Put the transmission into neutral
  3. Move the tyre until you find the tightest part of the chain (it may all be uniform).
  4. In the area right after the sliding guard, press the chain up towards the link fork.
  5. Measure the distance between the link and the chain.
  6. Repeat the measurement across a few positions.

The target distance should be 5-7 mm (0.2-0.28 inches).

If you needs to adjust chain tension:

  1. Loosen the axel nuts.
  2. Loosen the chain tension retaining nuts.
  3. Turn the tension adjusting screws. Turn them the same amount so that the adjustor positions are in the same position on both sides. This keeps the wheel in alignment.
  4. Check chain tension, and keep repeating until it’s right.
  5. Tighten nuts other than the axle nut.
  6. Make sure that the chain adjusters are correctly fitted on the screws (i.e. that it’s not out of the operating range).
  7. Tighten the axle nut (use a big torque wrench — 74 ft-lb or 100 Nm of torque).

KTM 390 Adventure Tire sizes and pressures

The 390 Adventure ships with the following tire sizes and pressures.

WheelTyre sizeTyre pressure
Front100/90-19 M/C 57T M+S TL2 bar/29 psi
Rear130/80-17 M/C 65T M+S TL2 bar/29 psi
2.2 bar/32 psi with passenger
KTM 390 Adventure tyre sizes and pressures

The KTM 390 Adventure ships with competent Continental TKC 70 on/off-road tires. They do a pretty good job off-road, too.

About the KTM 390 Adventure

KTM 390 Adventure 2020 parked outside with rider static web

The KTM 390 Adventure is a compact adventure bike that’s based on the same 390 platform that powers a couple of other bikes in KTM’s stable. At the far “road” end of the road-dirt spectrum you’ll find the KTM RC 390 street sport bike.

The KTM 390 Adventure is the kind of bike that you can ride in all kinds of conditions ranging from urban commutes through highways to light adventure off-roading.

Most riders would agree that the 390 Adventure isn’t a dirt bike. It doesn’t have long-travel suspension and is considerably heavier than something like a Honda CRF300L, or one of KTM’s many dirt-ready bikes. But still, the 390 Adventure is very capable, and much more so than its modest appearance would imply.

The KTM 390 Adventure is powered by exactly the same 373 cc single-cylinder engine that you’ll find in the KTM RC 390, after all. So is this a sport bike? Sure, why not!

It’s a very modern engine, with liquid-cooling, four valves, and a nice flat torque band all the way from down low through its engine cut-off at 10000 rpm. So you can make the engine sing if you want to.

KTM 390 engine 2017-2020 copy
The engine in the KTM 390 series motorcycles

Power and torque are also of the same spec as its stablemates. The KTM 390 Adventure makes peak torque of 27 ft-lb (37 Nm) at 7000 rpm (but it makes most of that from down low), and peak power of 43 bhp / 32 kW at 9000 rpm. The happy spot for the engine is between about 5-9000 rpm.

Riding the 390 Adventure is easy. It has a comfortable upright riding position and commanding view — despite the compact motor, this is a bike on which you feel you own the road.

It has ABS brakes, and even has an IMU for cornering input into ABS. Braking is via a single 320mm disc and a Bybre (“almost Brembo”) 4-piston radially mounted caliper. You can shut off the ABS if you want to.

That’s not all the tech that the KTM 390 Adventure has. It also comes with a TFT display, full LED lighting, and Bluetooth connectivity. It’s a lot of value for money.

To show that the KTM 390 Adventure can do off-road duty, it comes with a 19-inch front wheel (not quite 21, but pretty good!) and Continental TKC 70 dual sport tires. These give a good blend of on- and off-road performance.

Suspension travel is similar, neither too little nor too much, with 6.7 / 6.9 inches front and rear. That makes it somewhat similar to a Suzuki V-Strom 650, but in a much lighter package.

What’s interesting is that even in this modestly priced compact adventure motorcycle, you get suspension adjustability on the front and rear WP Apex units. On the front inverted fork, you can adjust rebound and compression damping. And on the rear, you can adjust spring preload and rebound damping.

Manual for the KTM 390 Adventure

The above maintenance schedule came from the manual for the KTM 390 Adventure.

ktm 390 adventure maintenance schedule from manual
KTM 390 Adventure maintenance schedule from manual

You can download the manual directly from KTM here.

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