Please follow these few tips to increase mileage of your bike. However you cannot get a mileage up to 80-85 km pl. Firstly you need to control your gear shifts. You need to choose correct gear level while driving the bike i.e you should change the gears correctly according to traffic, roads (highways, streets, etc). Don't drive at low gears unnecessarily and don't drive in high gears at the same time. Make sure that you fill the fuel tank in early mornings, because in mornings the temperature will be low and hence it doesn't effect the density of fuel. Another thing put off the engine while you are in traffic.
Don't drive fast in streets because, you need to change the gears frequently and you need to apply brakes suddenly which wastes the fuel. Don't change the gears suddenly from high level to low level, as this decreases fuel efficiency. And while accelerating don;t press clutch. Give your bike for servicing regularly. So please follow these tips in order to increase mileage of your bike.
Thanks & Regards