Harley-Davidson Road King Classic 2006 Owner's Manual
![Harley-Davidson Road King Classic 2006 Motorcycle manual cover](/images/oRIfDABLyNBEzzLqKEgjwljl/thumbs/thumb175x175.webp)
The recommended tire pressure for the 2006 Harley-Davidson Road King Classic is 36 PSI for the front tire and 40 PSI for the rear tire.
It is recommended to change the oil every 2,500 to 3,000 miles or at least once a year if you don't reach that mileage.
Harley-Davidson recommends using SAE 20W50 synthetic motorcycle oil for the 2006 Road King Classic.
Check the battery connections, ensure the battery is charged, inspect the starter relay, and verify the kill switch is in the correct position.
The correct spark plug gap for the 2006 Road King Classic is 0.040 inches (1.02 mm).
Clean the saddlebags with a damp cloth and mild soap, then apply a leather conditioner to keep the leather supple and protected.
Check for coolant leaks, ensure the radiator fins are clean, verify the thermostat is functioning, and ensure the coolant level is adequate.
Maintain proper tire pressure, ensure the air filter is clean, use high-quality fuel, and avoid rapid acceleration and excessive idling.
Regular maintenance should include oil changes every 2,500 to 3,000 miles, tire pressure checks monthly, and a full inspection every 5,000 miles.
Use the preload adjuster located on the rear shocks to set the suspension based on your weight and riding preference. Refer to the owner's manual for specific adjustment instructions.