2019-2022 KTM 350 SX-F / 350 XC-FMaintenance schedule

Motocross / cross-country - 350cc four-stroke

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

Verified

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

Intervals

After 1 operating hour
Every 10 operating hours
Every 20 operating hours
Every 30 operating hours
Every 40 operating hours
every 12 months
After 10 operating hours
After 20 operating hours
Every 50 operating hours
Every 100 operating hours

Full schedule (54 items)

2019-2022 KTM 350 SX-F / 350 XC-F scheduled maintenance items and intervals
Item	Action	Interval	Chart
Change the engine oil and oil filter, clean the oil screen	Replace, Clean	Every 10 hrs Also marked: After 1 operating hour	Required work
Change the fuel screen	Replace	Every 10 hrs Also marked: After 1 operating hour	Required work
Check all hoses (e.g. fuel, cooling, bleeder, drainage hoses, etc.) and sleeves for cracking, tightness, and correct routing	Inspect	Every 10 hrs Also marked: After 1 operating hour	Required work
Check and charge the 12-V battery	Inspect	Every 10 hrs	Required work
Check steering head bearing play	Inspect	Every 10 hrs Also marked: 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: After 1 operating hour	Required work
Check the antifreeze and coolant level	Inspect	Every 10 hrs Also marked: 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 brake linings of the rear brake	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: 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 fuel pressure	Inspect	Every 10 hrs	Required work
Check the heim joint for play	Inspect	Every 10 hrs	Required work
Check the idle speed	Inspect	Every 10 hrs Also marked: After 1 operating hour	Required work
Check the link fork	Inspect	Every 10 hrs	Required work
Check the rear brake fluid level	Inspect	Every 10 hrs	Required work
Check the rim run-out	Inspect	Every 10 hrs Also marked: 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: After 1 operating hour	Required work
Check the tightness of the easily accessible, safety-relevant screws and nuts	Inspect	Every 10 hrs Also marked: After 1 operating hour	Required work
Check the tire condition	Inspect	Every 10 hrs Also marked: 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 tire pressure	Inspect	Every 10 hrs Also marked: After 1 operating hour	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: 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 a service entry in the KTM Dealer.net	Inspect	Every 10 hrs Also marked: After 1 operating hour	Required work
Read out the fault memory using the KTM diagnostics tool	Inspect	Every 10 hrs Also marked: 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: After 1 operating hour	Required work
Change the glass fiber yarn filling of the main silencer	Replace	Every 20 hrs	Required work
Check the clutch	Inspect	Every 20 hrs	Required work
Check the fork bearing for play	Inspect	Every 20 hrs	Required work
Change the cover seal and shaft seal rings of the water pump	Replace	Every 30 hrs	Required work
Check the valve clearance	Inspect	Every 30 hrs Also marked: After 1 operating hour	Required work
Perform the shock absorber service	Inspect	Every 40 hrs	Required work
Service the fork	Inspect	Every 40 hrs	Required work
Perform minor engine service including removing and installing engine. (Change spark plug and spark plug connector. Change piston, check and measure cylinder; check cylinder head. Check camshaft and cam lever. Check timing assembly. Change intake flange.)	Replace	Every 50 hrs	Recommended work
Change the fuel filter	Replace	Every 100 hrs	Recommended work
Perform major engine service including removing and installing the engine. (Change valves, valve springs, valve spring seats, and valve spring retainers. Change the connecting rod, conrod bearing and crank pin. Check the transmission and shift mechanism. Check the oil pressure control valve. Change the suction pump. Check the force pump and lubrication system. Change the timing chain. Change all engine bearings. Change the freewheel.)	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
Lubricate the steering head bearing	Lubricate	Every 12 mo	Recommended work
Perform the shock absorber service	Inspect	One time Also marked: After 20 operating hours	Recommended work
Service the fork	Inspect	One time Also marked: After 10 operating hours	Recommended work

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

Specs

From the 2020 manual's technical data section. Check yours before buying — these change between model years.

Displacement: 349.7 cm³ (21.34 cu in)
Compression ratio: 14.2:1
Idle speed: 2,250 … 2,350 rpm
Valve clearance (cold): intake: 0.08 … 0.15 mm (0.0031 … 0.0059 in)
exhaust: 0.12 … 0.19 mm (0.0047 … 0.0075 in)
Spark plug: NGK LMAR9AI-8
Plug gap: 0.8 mm (0.031 in)
Engine oil: capacity: 1.0 l (1.1 qt.)
spec: SAE 10W/50
Coolant: capacity: 0.95 l (1 qt.)
Tire pressure (cold): off-road front: 1.0 bar (15 psi)
off-road rear: 1.0 bar (15 psi)
Secondary ratio: 14:51
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

Chart notes

1. In this printing the recommended-work table puts 'every 12 months' in the leftmost column, ahead of the hour columns - unusual for KTM, and confirmed against the printed page.

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 2020 350 SX-F / 350 XC-F · Chart read from the 2020 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