I just bought my new Suzuki Gixxer 155 four days back. I have hardly traveled 100 kms in it. I also maintain my speed well within 40-50 because the bike has not been serviced yet. But whenever I take my bike out for a small ride even, I noticed the engine getting heated up. When I tried to go near the engine, it somehow smelled like something is burning. But after keeping for 15-20 minutes, it again gets back to normal. I am not able to understand the reason behind this. Is my bike defective? Or is it because it is air cooled? Or is it because the first maintenance is not done yet?