KTM 125 SX 2016 Maintenance Schedule
The 2016 KTM 125 SX maintenance schedule below covers the manufacturer's recommended service intervals for oil, general maintenance, brake fluid, air filter and spark plugs. 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 2016–2022): azwecdnepstoragewebsiteuploads.azureedge.net
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Transmission oil change | Every 10 operating hours | Easy | Replace transmission oil (Motorex Top Speed 4T 15W/50, 0.8L capacity). |
| Fork outer tube air venting | Every 5 operating hours | Easy | Bleed air pre-charge pressure from WP AER 48 fork legs. |
| Brake fluid replacement | Every 24 months · Replace every 24 months | Moderate | Replace front and rear hydraulic brake fluid. |
| 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). |
| Piston replacement | Every 20 operating hours | Moderate | Replace piston, piston ring, and small end needle bearing. |
| Exhaust control valve cleaning | 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 Brembo hydraulic clutch system. |
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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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