Time for a bigger bike

Will has outgrown his little bike so today we bought him a new bigger bike. Its new to us but second hand as I'm sure it will only let a couple of years before we need another one again. I spent a good couple of hours in the shed fiddling with the gears trying to get them working more smoothly. They are not bad but I'm sure they could still be improved. The photo is of the little bike that we shall now pass on to someone smaller.