Harley-Davidson Road King 2003 Maintenance Schedule
The 2003 Harley-Davidson Road King maintenance schedule below covers the manufacturer's recommended service intervals for oil, drive chain maintenance, brake fluid, air filter, tires, battery, general maintenance and spark plugs. Intervals are shown in kilometres by default and can be switched to miles.
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Sourced from Harley-Davidson 2011 Road King Classic (Touring) Owner's Manual — "Regular Service Intervals: 2011 Touring Models" table (this document covers model years 2000–2013): scf99fe700a0cb239.jimcontent.com
Full schedule
| Task | Interval | Difficulty | Notes |
|---|---|---|---|
| Transmission lubricant change | Every 32,000 km (first at 1,600 km) · Every 24 months | Easy | Replace transmission lubricant. |
| Engine oil & filter change | Every 8,000 km (first at 1,600 km) · Every 12 months · Replace every 8,000 km · Replace every 12 months | Easy | Replace engine oil and oil filter. |
| Primary chaincase lubricant change | Every 16,000 km (first at 1,600 km) | Easy | Replace primary chaincase lubricant. |
| Secondary drive belt inspection & tension | Every 8,000 km (first at 1,600 km) | Easy | Inspect secondary drive belt condition and check tension. |
| Primary chain tension check & adjustment | Every 8,000 km (first at 1,600 km) | Moderate | Check primary chain tension and adjust as needed. |
| Brake fluid replacement | Every 24 months · Replace every 24 months | Moderate | Flush and replace front and rear brake fluid. |
| Air filter element inspection & replacement | Every 8,000 km (first at 1,600 km) | Easy | Inspect air filter element every 8,000 km (5,000 mi); clean or replace as required. |
| Tire pressure & tread inspection | Every 8,000 km (first at 1,600 km) | Easy | Inspect tire tread depth and check inflation pressures. |
| Battery & terminal inspection | Every 8,000 km (first at 1,600 km) · Every 12 months | Easy | Clean battery terminals and test battery state of charge. |
| Steering head bearings lubrication & check | Every 16,000 km (first at 1,600 km) | Moderate | Lubricate steering head bearings and check adjustment. |
| General chassis & fastener check | Every 8,000 km (first at 1,600 km) · Every 12 months | Easy | Inspect controls, brake pads, fuel lines, exhaust, and lights. |
| Spark plug replacement | Every 32,000 km | Easy | Replace spark plugs (2 plugs total). |
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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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