Reducing idle speed is a good way to save fuel, but if you turn off the engine as soon as you loosen the throttle, you won't save fuel. You should know that you need to step on the gas at the moment when the car starts. You should set it to the state of releasing the throttle and not turning off the engine. Frequent electric ignition has a great influence on the service life of starter.
The optimum speed of motorcycle is 45.
Ensure tire pressure
Don't use oil (it seems economical, but it is actually more expensive to use)
Do regular maintenance (oil change, filter element blowing and carburetor cleaning), and use less brakes (predictive braking to avoid sudden braking).