Hi Ruth. Get the ride-on blocked up off the ground, Remove the C clip that holds the wheel on, Wheel will then slide off axle towards you. Put the wheel on a hard surface and tread the tyre off the rim(wear hard shoes) both sides. Cut off the existing valve with side cutters or a sharp knife, Get a new inner tube, cover this in lots of talc powder to help slip it in the tyre. Get the valve in place first & gently slip the rest of the tube in through the gap keeping hold of the valve. Now inflate to about 10PSI & you have cured your flat for £15 - the cost of an inner tube! Sweet
Simon, June 2011
