Engine Sound in my new bike.
Hi guys... Finally I got my Yamaha XSR155 black Variant 2 days back. It's soo lightweight and very easy to handle. This is my first bike so I don't have any idea on engine performance in new bikes. I'm seeing that when I try to push my bike to 40-45Km/h I'm hearing some noise kind of thing in front region. I feels like engine is struggling and I heard a sound which is similar to some paper / plastic got stuck in the wheel but it's not. When I shift my gear to 4 and then drive in 45-50 it's good. but after sometime I feel like the engine is struggling based on the sound but engine is able to push. Is there any issue with the engine. Till now I'm driving in the range of 3000-4500 RPM's. I don't know about this guys ? Can anyone give some of your thoughts or ideas ?