KTM 450 SX-F 2021 Maintenance Schedule
The 2021 KTM 450 SX-F maintenance schedule below covers the manufacturer's recommended service intervals for general maintenance, battery, brake fluid, tires, drive chain maintenance, air filter, coolant, valve clearance and oil. Intervals are shown in kilometres by default and can be switched to miles.
450ccEngine size
52Maintenance items
Official manufacturer manual
Sourced from KTM Owner's Manual (official PDF content, mirrored via authorized KTM dealer ktmshop.se): ktmshop.se
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Read out the fault memory using the KTM diagnostics tool | Every 10 operating hours | Easy | Read out the fault memory using the KTM diagnostics tool |
| Check and charge the 12 V battery | Every 10 operating hours | Easy | Check and charge the 12 V battery |
| Check the front brake linings | Every 10 operating hours | Easy | Check the front brake linings |
| Check the brake linings of the rear brake | Every 10 operating hours | Easy | Check the brake linings of the rear brake |
| Check the brake discs | Every 10 operating hours | Easy | Check the brake discs |
| Check the brake lines for damage and leakage | Every 10 operating hours | Easy | Check the brake lines for damage and leakage |
| Check the rear brake fluid level | Every 10 operating hours | Moderate | Check the rear brake fluid level |
| Check the free travel of the foot brake lever | Every 10 operating hours | Easy | Check the free travel of the foot brake lever |
| Check the frame | Every 10 operating hours | Easy | Check the frame |
| Check the link fork | Every 10 operating hours | Easy | Check the link fork |
| Check the link fork bearing for play | Every 20 operating hours | Moderate | Check the link fork bearing for play |
| Check the shock absorber heim joint for play | Every 10 operating hours | Advanced | Check the shock absorber heim joint for play |
| Check the shock absorber linkage | Every 10 operating hours | Advanced | Check the shock absorber linkage |
| Check the wheel bearing for play | Every 10 operating hours | Advanced | Check the wheel bearing for play |
| Check the wheel hubs | Every 10 operating hours | Easy | Check the wheel hubs |
| Check the chain, rear sprocket, engine sprocket, and chain guide | Every 10 operating hours | Easy | Check the chain, rear sprocket, engine sprocket, and chain guide |
| Grease all moving parts (e.g., hand lever, chain, ...) and check for smooth operation | Every 10 operating hours | Easy | Grease all moving parts (e.g., hand lever, chain, ...) and check for smooth operation |
| Check/correct the fluid level of the hydraulic clutch | Every 10 operating hours | Easy | Check/correct the fluid level of the hydraulic clutch |
| Check the front brake fluid level | Every 10 operating hours | Moderate | Check the front brake fluid level |
| Check the free travel of the hand brake lever | Every 10 operating hours | Easy | Check the free travel of the hand brake lever |
| Check the clutch | Every 10 operating hours | Easy | Check the clutch |
| Check the cables for damage and for routing without kinks | Every 10 operating hours | Easy | Check the cables for damage and for routing without kinks |
| Clean the air filter and air filter box | Every 10 operating hours | Easy | Clean the air filter and air filter box |
| Change the glass fiber yarn filling of the main silencer | Every 20 operating hours | Easy | Change the glass fiber yarn filling of the main silencer |
| Check the fuel pressure | Every 10 operating hours | Easy | Check the fuel pressure |
| Change the front brake fluid | Every 12 months | Moderate | Change the front brake fluid |
| Change the rear brake fluid | Every 12 months | Moderate | Change the rear brake fluid |
| Change the hydraulic clutch fluid | Every 12 months | Moderate | Change the hydraulic clutch fluid |
| Lubricate the steering head bearing | Every 12 months | Easy | Lubricate the steering head bearing |
| Change the fuel filter | Every 100 operating hours | Easy | Change the fuel filter |
| Change the coolant | Every 48 months | Moderate | Change the coolant |
| Perform minor engine service, engine has been installed (change the spark plug and related top-end wear items) | Every 50 operating hours | Advanced | Perform minor engine service, engine has been installed (change the spark plug and related top-end wear items) |
| 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 radial shaft seal rings and bearing seals of the main bearing) | Every 100 operating hours | Expert | 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 radial shaft seal rings and bearing seals of the main bearing) |
| Check the tire condition | Every 10 operating hours | Easy | Check the tire condition |
| Check tire pressure | Every 10 operating hours | Easy | Check tire pressure |
| Check the rim run-out | Every 10 operating hours | Easy | Check the rim run-out |
| Check the spoke tension | Every 10 operating hours | Easy | Check the spoke tension |
| Check the chain tension | Every 10 operating hours | Easy | Check the chain tension |
| Check steering head bearing play | Every 10 operating hours | Advanced | Check steering head bearing play |
| Check the valve clearance | Every 30 operating hours | Advanced | Check the valve clearance |
| Change the engine oil and the oil filter, clean the oil screen | Every 10 operating hours | Easy | Change the engine oil and the oil filter, clean the oil screen |
| Check all hoses (e.g. fuel, cooling, bleeder, drainage, etc.) and sleeves for cracking, leaks, and incorrect routing | Every 10 operating hours | Easy | Check all hoses (e.g. fuel, cooling, bleeder, drainage, etc.) and sleeves for cracking, leaks, and incorrect routing |
| Check the antifreeze and coolant level | Every 10 operating hours | Easy | Check the antifreeze and coolant level |
| Check that the throttle cables are undamaged, routed without sharp bends, and set correctly | Every 10 operating hours | Easy | Check that the throttle cables are undamaged, routed without sharp bends, and set correctly |
| Service the fork | Every 40 operating hours | Advanced | Service the fork |
| Perform the shock absorber service | Every 40 operating hours | Advanced | Perform the shock absorber service |
| Check the tightness of the easily accessible, safety-relevant screws and nuts | Every 10 operating hours | Easy | Check the tightness of the easily accessible, safety-relevant screws and nuts |
| Change the fuel screen | Every 10 operating hours | Easy | Change the fuel screen |
| Check the idle speed | Every 10 operating hours | Easy | Check the idle speed |
| Final check: check the vehicle for operating safety and take a test ride | Every 10 operating hours | Easy | Final check: check the vehicle for operating safety and take a test ride |
| Read out the fault memory using the KTM diagnostics tool after a test ride | Every 10 operating hours | Easy | Read out the fault memory using the KTM diagnostics tool after a test ride |
| Make a service entry in the KTM Dealer.net | Every 10 operating hours | Easy | Make a service entry in the KTM Dealer.net |
No maintenance items match your search.
Easy: basic tools, straightforward Easy–Moderate: varies by task — somewhere between the two Moderate: some mechanical know-how helps Advanced: specialized tools/skill, still DIY-doable Expert: significant experience required Professional: dealer or shop recommended
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