Q. The mileage of my Royal Enfield Bullet 350 has gone down to 15kmpl in around 3 months, service is done last month but there is no difference in the mileage so please tell me why is this happening?

Not possible. Pl full the tank personally and check again. Pl inspect brake & Chain 1.The chain should be very dry it should be cleaned & lubricated. (ever 300 km it should be done) 2. Brake drum should be checked & cleaned. 3. If clutch problem may be their. Contact RE service

Your bullet 350 is carburettor version or FI version ? Check with your mechanic in RE service centre, in case of FI you may need to replace injector and in case of carburettor you need to change the whole unit of carburettor. Also check with the fuel and air mixture.

Check for your carb setting if its running rich. Get the card adjusted , Check if the fuel is leaking , check the brakes if they are free. Check the clucth adjustment, If everything above is good get the valves adjusted.