2016-2022 KTM 450 SX-F / 450 XC-FMaintenance schedule

Motocross / cross-country - 450cc four-stroke

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

Verified

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

Intervals

Once after 1 operating hour
Every 10 operating hours/after every race
Every 20 operating hours
Every 30 operating hours
Once after 10 operating hours
Once after 20 operating hours
Every 40 operating hours
Every 50 operating hours
Every 100 operating hours
Annually

Full schedule (61 items)

2016-2022 KTM 450 SX-F / 450 XC-F scheduled maintenance items and intervals
Item	Action	Interval	Chart
Change fuel screen	Replace	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Change the engine oil and oil filter and clean the oil screens	Replace, Clean	Every 10 hrs Also marked: Once after 1 operating hour	Required work
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 and charge the battery	Inspect	Every 10 hrs	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 fluid level of the front brake	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 routing without sharp bends	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 clutch	Inspect	Every 10 hrs	Required work
Check the frame and swingarm	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 linings	Inspect	Every 10 hrs	Required work
Check the fuel pressure	Inspect	Every 10 hrs	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 steering head bearing play	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	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 safe operation and take a test ride	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	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	Required work
Read out the fault memory using the KTM diagnostics tool	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Read out the fault memory using the KTM diagnostics tool after a test ride	Inspect	Every 10 hrs Also marked: Once after 1 operating hour	Required work
Change the glass fiber yarn filling of the main silencer	Replace	Every 20 hrs	Required work
Check the swingarm bearing for play	Inspect	Every 20 hrs	Required work
Check the valve clearance	Inspect	Every 30 hrs Also marked: Once after 1 operating hour	Required work
Perform a fork service. (SX‑F US, XC‑F US)	Inspect	Every 40 hrs Also marked: Once after 10 operating hours	Recommended work
Service the fork. (SX‑F EU)	Inspect	Every 40 hrs Also marked: Once after 10 operating hours	Recommended work
Service the shock absorber	Inspect	Every 40 hrs Also marked: Once after 20 operating hours	Recommended work
Change the piston, check and measure the cylinder, and check the cylinder head	Replace	Every 50 hrs	Recommended work
Change the spark plug and spark plug connector	Replace	Every 50 hrs	Recommended work
Check the camshaft, rocker arm and rocker arm shafts	Inspect	Every 50 hrs	Recommended work
Check the timing assembly	Inspect	Every 50 hrs	Recommended work
Change all engine bearings	Replace	Every 100 hrs	Recommended work
Change the connecting rod, conrod bearing, and crank pin	Replace	Every 100 hrs	Recommended work
Change the fuel filter	Replace	Every 100 hrs	Recommended work
Change the shaft seal rings and bearing seals of the main bearing	Replace	Every 100 hrs	Recommended work
Change the suction pump	Replace	Every 100 hrs	Recommended work
Change the valves, valve springs, valve spring seats and valve spring retainers	Replace	Every 100 hrs	Recommended work
Check the oil pressure regulator valve	Inspect	Every 100 hrs	Recommended work
Check the pressure pump and lubrication system	Inspect	Every 100 hrs	Recommended work
Check the transmission and shift mechanism	Inspect	Every 100 hrs	Recommended work
Replace the timing chain	Replace	Every 100 hrs	Recommended 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

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

Specs

From the 2016 manual's technical data section. Check yours before buying — these change between model years.

Displacement: 449.9 cm3 (27.455 cu in)
Bore × stroke: 95 x 63.4 mm (3.74 x 2.496 in)
Compression ratio: 12.75:1
Idle speed: 2,250-2,350 rpm
Valve clearance (cold): intake: 0.10-0.15 mm (0.0039-0.0059 in) at 20 C
exhaust: 0.12-0.17 mm (0.0047-0.0067 in) at 20 C
Spark plug: NGK LMAR9AI
Plug gap: 0.8 mm (0.031 in)
Engine oil: capacity: 1.30 l (1.37 qt)
spec: SAE 10W/50
Coolant: capacity: 1.20 l (1.27 qt)
Fuel: tank: 7.5 l (1.98 US gal) SX-F; 8.5 l (2.25 US gal) XC-F US
spec: Super unleaded RON 95 / PON 91
Tire pressure (cold): off-road front: 1.0 bar (15 psi)
off-road rear: 1.0 bar (15 psi)
Secondary ratio: 13:48
Drive chain: 5/8 x 1/4"

Legend

one-time — One-time interval - performed once when that hour figure is reached
periodic — Periodic interval - repeated every time that hour/month 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 2016 450 SX-F / 450 XC-F (Art. no. 3213333en), section 9 Service Schedule · Chart read from the 2016 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