1 There are several types of fuel-saving devices for scooters, and the fuel-saving gear is changed in the variable-speed gearbox. & lt You can increase the sliding amount like a bicycle to improve fuel economy > Pay attention to control the car and brake well. I don't recommend cars that run mostly in urban areas. Some motorcycle manufacturers have adopted this fuel saver.
2. The economizer that changes the speed of the driving pulley, the ball on the front plate and the spring that increases or decreases the elasticity of the rear pulley all play a role in saving fuel. I don't recommend using heavy vehicles.
3. The oil economizer connected to the gasoline pipeline plays a catalytic role.
Carburetors should be purchased in a safe place. Generally, the price will be higher if it is guaranteed for half a year or one year, 80- 180. I suggest you change it to 100 or so.
5 Oil economizer in 70-100
I hope you can use it.