2007-2012 KTM 450 SX-FMaintenance schedule

Motocross - 450cc four-stroke

Scheduled against engine service hours, each also expressed as a fuel volume; plus a per-race trigger and an annual item.

Verified

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

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Intervals

Once after 1 operating hour
Every 10 operating hours/after every race
Every 20 operating hours
Every 30 operating hours
Once after 20 operating hours
Every 40 operating hours
Every 80 operating hours
Annually

Full schedule (58 items)

2007-2012 KTM 450 SX-F scheduled maintenance items and intervals
Item	Action	Interval	Chart
Change the engine oil and oil filter, clean the oil screen	Replace, Clean	Every 9 hrs	Service schedule
Check all hoses x(e.g. fuel, cooling, bleeder, drainage, etc.) and sleeves for cracking, correct routing	Inspect	Every 9 hrs	Service schedule
Check idle	Inspect	Every 9 hrs	Service schedule
Check that the cables are undamaged, routed without sharp bends and set correctly	Inspect	Every 9 hrs	Service schedule
Check the anti-freeze and coolant level	Inspect	Every 9 hrs	Service schedule
Check the chain tension	Inspect	Every 9 hrs	Service schedule
Check the rim run-out	Inspect	Every 9 hrs	Service schedule
Check the screws and nuts for tightness	Inspect	Every 9 hrs	Service schedule
Check the spoke tension	Inspect	Every 9 hrs	Service schedule
Check the steering head bearing play	Inspect	Every 9 hrs	Service schedule
Check the tire air pressure	Inspect	Every 9 hrs	Service schedule
Check the tire condition	Inspect	Every 9 hrs	Service schedule
Final check: Check the vehicle for safe operation and take a test ride	Inspect	Every 9 hrs	Service schedule
Make the service entry in KTM DEALER.NET and in the service record	Inspect	Every 9 hrs	Service schedule
Change the glass fiber yarn filling of the main silencer	Replace	Every 10 hrs	Service schedule
Check and charge the battery	Inspect	Every 10 hrs	Service schedule
Check the brake discs	Inspect	Every 10 hrs	Service schedule
Check the brake fluid level of the front brake	Inspect	Every 10 hrs	Service schedule
Check the brake lines for damage and leakage	Inspect	Every 10 hrs	Service schedule
Check the cables for damage and routing without sharp bends	Inspect	Every 10 hrs	Service schedule
Check the chain, rear sprocket, engine sprocket and chain guide	Inspect	Every 10 hrs	Service schedule
Check the fluid level of the hydraulic clutch	Inspect	Every 10 hrs	Service schedule
Check the frame and swingarm	Inspect	Every 10 hrs	Service schedule
Check the free travel of the foot brake lever	Inspect	Every 10 hrs	Service schedule
Check the free travel on the hand brake lever	Inspect	Every 10 hrs	Service schedule
Check the front brake linings	Inspect	Every 10 hrs	Service schedule
Check the rear brake fluid level	Inspect	Every 10 hrs	Service schedule
Check the rear brake linings	Inspect	Every 10 hrs	Service schedule
Check the shock absorber linkage	Inspect	Every 10 hrs	Service schedule
Check the wheel bearing for play	Inspect	Every 10 hrs	Service schedule
Check the wheel hubs	Inspect	Every 10 hrs	Service schedule
Clean the air filter and air filter box	Clean	Every 10 hrs	Service schedule
Conduct a minor fork service	Inspect	Every 10 hrs	Service schedule
Lubricate all moving parts (e.g., hand lever, chain, ...) and check for smooth operation	Lubricate	Every 10 hrs	Service schedule
Check the valve clearance	Inspect	Every 19 hrs	Service schedule
Change the piston. (in difficult operating conditions)	Replace	Every 20 hrs	Service work (as additional order)
Check the clutch	Inspect	Every 20 hrs	Service schedule
Check the swingarm bearing	Inspect	Every 20 hrs	Service schedule
Service the shock absorber	Inspect	Every 20 hrs	Service work (as additional order)
Conduct a major fork service	Inspect	Every 30 hrs	Service schedule
Change the connecting rod, conrod bearing and crank pin	Replace	Every 40 hrs	Service work (as additional order)
Change the crankshaft bearing	Replace	Every 40 hrs	Service work (as additional order)
Change the piston	Replace	Every 40 hrs	Service work (as additional order)
Change the spark plug and spark plug connector	Replace	Every 40 hrs	Service work (as additional order)
Change the valves, valve springs and valve spring seats	Replace	Every 40 hrs	Service work (as additional order)
Check the camshaft and cam lever	Inspect	Every 40 hrs	Service work (as additional order)
Check the cylinder head	Inspect	Every 40 hrs	Service work (as additional order)
Check the oil pressure regulator valve	Inspect	Every 40 hrs	Service work (as additional order)
Check the oil pumps and lubrication system	Inspect	Every 40 hrs	Service work (as additional order)
Check the timing assembly	Inspect	Every 40 hrs	Service work (as additional order)
Check the transmission and shift mechanism	Inspect	Every 40 hrs	Service work (as additional order)
Check/measure the cylinder	Inspect	Every 40 hrs	Service work (as additional order)
Check/set the carburetor components	Inspect	Every 40 hrs / 12 mo	Service work (as additional order)
Change all engine bearings	Replace	Every 80 hrs	Service work (as additional order)
Change the front brake fluid	Replace	Every 12 mo	Service work (as additional order)
Change the hydraulic clutch fluid	Replace	Every 12 mo	Service work (as additional order)
Change the rear brake fluid	Replace	Every 12 mo	Service work (as additional order)
Grease the steering head bearing	Lubricate	Every 12 mo	Service work (as additional order)

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

Specs

From the 2012 manual's technical data section. Check yours before buying — these change between model years.

Displacement: 449.3 cm³ (27.418 cu in)
Compression ratio: 12.5:1
Idle speed: 1,550… 1,650 rpm
Spark plug: NGK CR 9 EKB
Plug gap: 0.7 mm (0.028 in)
Engine oil: capacity: 1.35 l (1.43 qt.)
spec: SAE 10W/50
Coolant: capacity: 1.2 l (1.3 qt.)
Fuel: tank: 7.5 l (1.98 US gal)
Tire pressure (cold): off-road front: 1.0 bar (15 psi)
off-road rear: 1.0 bar (15 psi)
Drive chain: 5/8 x 1/4"

Legend

periodic — Item is marked in this interval column

Chart notes

1. KTM expresses each hour figure as an equivalent fuel volume, on the reasoning that riders track fuel more reliably than hours. Both are in the interval labels.

From the manual

Any further work resulting from the required or recommended work must be ordered and invoiced separately.
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 2012 450 SX-F EU / 450 SX-F USA (Art. no. 3211717en), section 8 Service Schedule · Chart read from the 2012 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.

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