Motocross · Four stroke
KTM 400 SX
Sold in Australia from 1999 to 2002, 4 model years. Below: the service intervals the MWMX Digital Garage runs on a 400 SX, the parts assigned to fit it, and the used ones for sale on the Marketplace right now.
Servicing a 400 SX
Engine hours between jobs, the schedule the Digital Garage tracks for you. Ride hard, in sand or mud, and halve the engine ones.
| Job | Every |
|---|---|
| Air filter clean and re-oil | 3h |
| Chain clean, lube and adjust | 3h |
| Engine oil change | 8h |
| Oil filter replace | 8h |
| Spoke tension check | 8h |
| Fastener torque check | 8h |
| Valve clearance check | 15h |
| Cables and throttle lube | 15h |
| Air boot and intake seal check | 20h |
| Spark plug replace | 25h |
| Rear brake pads | 25h |
| Silencer repack | 30h |
| Linkage bearings grease | 30h |
| Tyres inspect / replace | 30h |
| Tubes and rim locks | 30h |
| Top end inspect (piston, rings, cylinder) | 40h |
| Clutch plates inspect | 40h |
| Chain slider, guide and roller | 40h |
| Fork service (oil and seals) | 40h |
| Front brake pads | 40h |
| Grips inspect / replace | 40h |
| Fuel filter / in-tank screen | 45h |
| Chain and sprockets replace | 60h |
| Shock service | 60h |
| Swingarm bearings grease | 60h |
| Steering head bearings grease | 60h |
| Wheel bearings inspect | 60h |
| Radiator, hoses and clamps | 60h |
| Cam chain and tensioner inspect | 80h |
| Carburettor / throttle body clean | 80h |
| Brake discs inspect | 80h |
| Wiring and connectors | 80h |
| Bottom end inspect / rebuild | 100h |
| Water pump seal and impeller | 100h |
Parts that fit a 400 SX
Motorex Cross Power 4T 10W60 - 1L$47.50 · members $40.38
Motorex Formula 4 Stroke 10W40 4L$99.95 · members $84.96
Motorex 4 Stroke 20W50 4L$79.95 · members $67.96
Motorex Racing Pro Cross 10W40 4L$154.95 · members $131.71
Used KTM 400 SXs for sale
None listed right now. Selling one? List it free →
Other KTM models
- 50 Junior Adventure
- 50 Mini Adventure
- 50 Senior Adventure
- 50 SX
- 50 SX Factory Edition
- 50 SX Mini
- 60 SX
- 65 SX
- 85 SX
- 105 SX
- 125 EXC
- 125 SX
- 125 XC
- 125 XC-W
- 144 SX
- 150 EXC
- 150 SX
- 150 XC
- 150 XC-W
- 200 EXC
- 200 MXC
- 200 XC
- 200 XC-W
- 250 EXC
- 250 EXC-F
- 250 EXC-F Six Days
- 250 MXC
- 250 SX
- 250 SX-F
- 250 SX-F Factory Edition
- 250 XC
- 250 XC-F
- 250 XC-W
- 250 XCF-W
- 300 EXC
- 300 EXC Six Days
- 300 MXC
- 300 SX
- 300 XC
- 300 XC-W
- 350 EXC-F
- 350 EXC-F Six Days
- 350 SX-F
- 350 XC-F
- 350 XCF-W
- 360 SX
- 380 EXC
- 380 SX
- 400 EXC
- 400 LC4
- 400 MXC
- 400 XC-W
- 450 EXC
- 450 EXC-F
- 450 MXC
- 450 SX
- 450 SX-F
- 450 SX-F Factory Edition
- 450 XC
- 450 XC-F
- 450 XCF-W
- 500 EXC
- 500 EXC-F
- 500 EXC-F Six Days
- 500 XCF-W
- 505 SX-F
- 505 XC-F
- 520 EXC
- 520 SX
- 525 EXC
- 525 MXC
- 525 SX
- 525 XC
- 530 EXC
- 530 XC-W
- 620 LC4
- 640 LC4 Enduro
- 690 Enduro R
- 690 SMC R
- Freeride 250F
- Freeride 250R
- Freeride 350
- Freeride E-SX
- Freeride E-XC
- SX-E 3
- SX-E 5
- All makes →