Suzuki GSX-R125 2021 Maintenance Schedule
The 2021 Suzuki GSX-R125 maintenance schedule below covers the manufacturer's recommended service intervals for oil, coolant, air filter, general maintenance, valve clearance, spark plugs, drive chain maintenance, brake fluid and tires. Intervals are shown in kilometres by default and can be switched to miles.
Sourced from Suzuki (Owners Manual) (this document covers model years 2017–2025): web.archive.org
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Engine oil & filter change | Every 4,000 km (first at 1,000 km) · Every 12 months | Easy | Replace engine oil every 4000 km or 12 months; replace engine oil filter. |
| Coolant replacement | Every 8,000 km · Every 24 months · Replace every 24 months | Moderate | Replace engine coolant every 2 years (8000 km) for standard "Suzuki Long Life Coolant" (green) or equivalent, or every 4 years (16000 km) if using factory-fill "Suzuki Super Long Life Coolant" (blue). |
| Air cleaner replacement | Every 4,000 km · Replace every 12,000 km | Easy | Inspect air cleaner every 4000 km; replace every 12000 km. |
| Exhaust pipe bolt and muffler bolt -- tighten | See notes | Easy | Tighten exhaust pipe bolt and muffler bolt. |
| Valve clearance inspection | Every 8,000 km | Advanced | Inspect valve clearance every 8000 km. |
| Spark plug inspection and replacement | Every 4,000 km · Replace every 8,000 km | Easy–Moderate | Inspect spark plug every 4000 km and replace every 8000 km. |
| Fuel hose inspection | Every 4,000 km · Replace every 48 months | Moderate | Inspect fuel hose for cracks or damage; replace every 4 years regardless of mileage. |
| Evaporative emission control system check | Every 8,000 km | Moderate | Inspect evaporative emission control system (if equipped). |
| Throttle cable play inspection | Every 4,000 km (first at 1,000 km) | Easy | Inspect throttle cable play. |
| PAIR (air) supply system check | Every 4,000 km | Easy | Inspect PAIR (air) supply system. |
| Radiator hose inspection | Every 4,000 km | Moderate | Inspect radiator hose for cracks or leaks. |
| Clutch cable play inspection | Every 4,000 km (first at 1,000 km) | Easy | Inspect clutch cable play. |
| Drive chain inspection & lubrication | Every 1,000 km | Easy | Inspect drive chain slack and lubricate chain. |
| Brakes inspection | Every 4,000 km (first at 1,000 km) | Easy–Moderate | Inspect brake operation, pad/shoe wear, and lever/pedal play. |
| Brake hose inspection | Every 4,000 km · Replace every 48 months | Moderate | Inspect brake hose for cracks or leaks; replace every 4 years regardless of mileage. |
| Brake fluid inspection and replacement | Every 4,000 km · Replace every 24 months | Moderate | Inspect brake fluid level; replace every 2 years. |
| Tires inspection | Every 4,000 km | Moderate | Inspect tire tread depth, damage, and air pressure. |
| Steering inspection | See notes | Moderate | Inspect steering head bearing play and smoothness. |
| Front forks inspection | Every 8,000 km | Moderate | Inspect front fork operation and check for oil leaks. |
| Rear suspension inspection | Every 8,000 km | Moderate | Inspect rear suspension/shock operation and check for oil leaks. |
| Chassis bolts and nuts -- tighten | Every 4,000 km (first at 1,000 km) | Easy | Tighten chassis bolts and nuts. |
| General lubrication (pivot points) | Every 1,000 km | Easy | Lubricate clutch lever pivot, side stand pivot, gearshift lever pivot, drive chain, brake lever/pedal pivots. |
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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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