2017-2019 KTM 250 SX / 250 XC / 300 XCMaintenance schedule

Cross-country - 250/300cc two-stroke

Scheduled against engine operating hours (some columns also keyed to races, motorsport use, or calendar months).

Verified

Every interval on this page was read directly from the OEM chart.

Intervals

Once after 1 operating hour
Once after 5 operating hours
Every 10 operating hours
Every 20 operating hours
Every 40 operating hours
Once after 10 operating hours / Every 10 operating hours
Once after 20 operating hours / Every 20 operating hours
Every 80 operating hours
Annually
Every 40 operating hours when used for motorsports

Full schedule (53 items)

2017-2019 KTM 250 SX / 250 XC / 300 XC scheduled maintenance items and intervals
Item	Action	Interval	Chart
Check all hoses (e.g. fuel, cooling, bleeder, drainage, etc.) and sleeves for cracking, leaks, and incorrect routing	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check idle	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check that the throttle cables are undamaged, routed without sharp bends, and set correctly	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the antifreeze and coolant level	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the brake discs	Inspect	Every 10 hrs	Required work
Check the brake lines for damage and leakage	Inspect	Every 10 hrs	Required work
Check the cables for damage and for routing without kinks	Inspect	Every 10 hrs	Required work
Check the chain tension	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the chain, rear sprocket, engine sprocket and chain guide	Inspect	Every 10 hrs	Required work
Check the frame	Inspect	Every 10 hrs	Required work
Check the free travel of the foot brake lever	Inspect	Every 10 hrs	Required work
Check the free travel of the hand brake lever	Inspect	Every 10 hrs	Required work
Check the front brake fluid level	Inspect	Every 10 hrs	Required work
Check the front brake linings	Inspect	Every 10 hrs	Required work
Check the heim joint for play	Inspect	Every 10 hrs	Required work
Check the play of the steering head bearing	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the rear brake fluid level	Inspect	Every 10 hrs	Required work
Check the rear brake linings	Inspect	Every 10 hrs	Required work
Check the rim run-out	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the screws and nuts for tightness	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the shock absorber linkage	Inspect	Every 10 hrs	Required work
Check the spoke tension	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the swingarm	Inspect	Every 10 hrs	Required work
Check the tire air pressure	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the tire condition	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Check the wheel bearing for play	Inspect	Every 10 hrs	Required work
Check the wheel hubs	Inspect	Every 10 hrs	Required work
Check/correct the fluid level of the hydraulic clutch	Inspect	Every 10 hrs	Required work
Clean the air filter and air filter box	Clean	Every 10 hrs	Required work
Final check: Check the vehicle for operating safety and take a test ride	Inspect	Every 10 hrs Also marked: Once after 1 operating hour; Once after 5 operating hours	Required work
Grease all moving parts (e.g., hand lever, chain, ...) and check for smooth operation	Lubricate	Every 10 hrs	Required work
Make the service entry in the KTM Dealer.net and in the Service and Warranty Booklet	Inspect	Every 10 hrs Also marked: Once after 1 operating hour; Once after 5 operating hours	Required work
Perform minor engine service. (Check the reed valve housing, reed valve, and intake flange. Check the clutch. Under difficult operating conditions: Change the piston and check the cylinder and Z dimension.) (All SX models)	Replace	Every 10 hrs	Recommended work
Change glass fiber yarn filling in the main silencer	Replace	Every 20 hrs	Required work
Change the gear oil	Replace	Every 20 hrs Also marked: Once after 5 operating hours	Required work
Change the spark plug and spark plug connector	Replace	Every 20 hrs	Required work
Check and charge the battery. (All XC models)	Inspect	Every 20 hrs	Required work
Check the reed valve housing, reed valve, and intake flange. (All XC models)	Inspect	Every 20 hrs	Recommended work
Check the swingarm bearing for backlash	Inspect	Every 20 hrs	Required work
Perform the intermediate engine service. (Change the piston and check the cylinder and Z dimension. Check the exhaust control for functioning and smooth operation.) (All SX models)	Replace	Every 20 hrs	Recommended work
Check the electric starter drive. (All XC models)	Inspect	Every 40 hrs	Recommended work
Check/set the carburetor components	Inspect	Every 40 hrs / 12 mo	Recommended work
Perform major engine service including removing and installing the engine. (Change the connecting rod, conrod bearing, and crank pin. Check the transmission and shift mechanism. Change all engine bearings.) (All SX models)	Replace	Every 40 hrs	Recommended work
Perform major engine service including removing and installing the engine. Change the piston and check the cylinder. Change the connecting rod, conrod bearing, and crank pin. Check the transmission and shift mechanism. Change all engine bearings.) (All XC models)	Replace	Every 40 hrs	Recommended work
Perform minor engine service. (Check the exhaust control for functioning and smooth operation. Check the clutch.) (All XC models)	Inspect	Every 40 hrs	Recommended work
Service the fork	Inspect	Every 40 hrs	Required work
Service the shock absorber	Inspect	Every 40 hrs	Required work
Change the front brake fluid	Replace	Every 12 mo	Recommended work
Change the hydraulic clutch fluid	Replace	Every 12 mo	Recommended work
Change the rear brake fluid	Replace	Every 12 mo	Recommended work
Grease the steering head bearing	Lubricate	Every 12 mo	Recommended work
Service the fork	Inspect	One time Also marked: Once after 10 operating hours / Every 10 operating hours	Recommended work
Service the shock absorber	Inspect	One time Also marked: Once after 20 operating hours / Every 20 operating hours	Recommended work

Every row above is factory schedule, straight from the chart. Intervals are shown in hrs.

Specs

From the 2018 manual's technical data section. Check yours before buying — these change between model years.

Displacement: 249 cm³ (15.19 cu in)
Idle speed: 1,400… 1,500 rpm
Spark plug: NGK BR 8 ECM
Plug gap: 0.60 mm (0.0236 in)
Gear oil: capacity: 0.80 l (0.85 qt.)
spec: 15W/50
Coolant: capacity: 1.2 l (1.3 qt.)
Fuel: tank: 7 l (1.8 US gal)
Tire pressure (cold): off-road front: 1.0 bar (15 psi)
off-road rear: 1.0 bar (15 psi)
Secondary ratio: 14:50
Drive chain: 5/8 x 1/4"

Legend

one-time — One-time interval - performed once when that figure is reached
periodic — Periodic interval - repeated every time that figure comes round

From the manual

Any further work resulting from the required or recommended work must be ordered and invoiced separately.
Different service intervals may apply in your country depending on local operating conditions.
Work in the service schedule must be carried out by an authorised KTM workshop and recorded, otherwise warranty claims are void.

Source: KTM Owner's Manual 2018 250 SX / 250 XC / 300 XC · Chart read from the 2018 manual. Intervals change between model years — confirm against yours.

Always confirm intervals, torque specs and part numbers against your own service manual. This site is a shopping aid, not a repair manual.

Open the hour meter tool