The importance of this element is often underestimated, thus making a big mistake! Poorly lubricated wheels can make the battery exert more effort, leading to premature wear. The wheel maintenance requires little time. First of all you will have to check often that blades of grass or other material are not stuck and then you will have to proceed with cleaning, using a brush and a damp cloth. If you notice any incrustations that are difficult to remove, dispense a little of WD-40 Multifunction, let it act, pass the brush again and finally wipe off the excessive amount of liquid with a dry cloth. This product, in addition to having detergent properties, is an excellent lubricant, capable of eliminating any type of friction.