Here's why:
* Accurate Reading: When the engine is cold, the oil is thicker and more viscous. After the engine warms up, the oil thins out and settles back down to the bottom of the crankcase, giving you a more accurate reading of the oil level.
* Potential for Overfilling: If you check the oil when it's cold, you might think it's low and add too much. Overfilling the crankcase can lead to problems with the engine.
Here's what you should do:
1. Warm up the engine: Start the engine and let it idle for 5-10 minutes.
2. Park on a level surface: Make sure the bike is parked on a level surface so the oil level is accurate.
3. Use the dipstick: Locate the dipstick and wipe it clean. Insert it all the way into the dipstick tube and then remove it.
4. Check the level: The oil level should be between the "Full" and "Low" marks on the dipstick. If it's below the "Low" mark, add oil until it reaches the "Full" mark.
Important: Always use the correct type and viscosity of oil for your Yamaha Roadstar. Refer to your owner's manual for the specific recommendations.
