KTM 85 SX 2008 Maintenance Schedule
The 2008 KTM 85 SX maintenance schedule below covers the manufacturer's recommended service intervals for oil, air filter, spark plugs, general maintenance, coolant and brake fluid. Intervals are shown in kilometres by default and can be switched to miles.
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Sourced from KTM Official Manuals (this document covers model years 2006–2025): azwecdnepstoragewebsiteuploads.azureedge.net
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Transmission oil change | Every 10 operating hours | Easy | Replace transmission gear oil (Motorex Top Speed 4T 15W/50, 0.5L). |
| Clean and oil air filter | Every 2 operating hours | Easy | Clean and oil foam filter element. |
| Spark plug replacement | Every 15 operating hours | Easy | Replace spark plug (NGK BR9ECMV / BR9ECM). |
| Piston replacement | Every 20 operating hours | Moderate | Replace piston assembly, ring, pin, and gudgeon pin bearing. |
| Exhaust control valve service | Every 20 operating hours | Moderate | Disassemble and clean exhaust power valve assembly. |
| Hydraulic clutch fluid flush | Every 24 months · Every 45 operating hours | Moderate | Flush hydraulic clutch fluid. |
| Coolant replacement | Every 24 months · Every 45 operating hours · Replace every 24 months | Moderate | Replace engine radiator coolant. |
| Brake fluid replacement | Every 24 months · Replace every 24 months | Moderate | Replace front and rear hydraulic brake fluid. |
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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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