Triumph Speedmaster 790 2003 Maintenance Schedule
The 2003 Triumph Speedmaster 790 maintenance schedule below covers the manufacturer's recommended service intervals for oil, valve clearance, spark plugs, air filter, brake fluid, drive chain maintenance and general maintenance. Intervals are shown in kilometres by default and can be switched to miles.
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Sourced from Triumph 'Scheduled Maintenance Check Sheet (Service Schedule) (this document covers model years 2003–2004): triumphbonneville.org
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Engine oil & filter change | Every 10,000 km (first at 800 km) · Every 12 months | Easy | Replace engine oil and filter. |
| Valve clearance check & adjustment | Every 20,000 km · Every 24 months | Advanced | Inspect and adjust valve clearances. |
| Spark plug replacement | Every 20,000 km · Every 24 months · Replace every 20,000 km | Easy–Moderate | Replace spark plugs. |
| Air filter element replacement | Every 20,000 km · Every 24 months · Replace every 20,000 km | Easy | Replace air filter element. |
| Brake fluid replacement | Every 24 months · Replace every 24 months | Moderate | Flush dual-disc front and rear brake fluid. |
| Drive chain inspection, cleaning & lubrication | Every 1,000 km | Easy | Inspect and lubricate drive chain. |
| Carburetor balance inspection | Every 10,000 km | Easy–Moderate | Check carburetor balance. |
| General safety inspection | Every 10,000 km · Every 12 months | Easy–Moderate | Annual safety inspection. |
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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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