On the two tiller clamps under the handlebars and tiller head there is a thumb screw on each clamp. Try adjusting the tiller clamp screw a tiny bit at a time and keep closing tiller clamp to see if the tension is right and it should stop falling down. If this is not helping, check there is a washer situated behind the clamp and it is still intact. If not, you can either come into see us, courier the scooter to us or we can come out on a call out to repair. Alternatively, you can order the part from us and take it somewhere local to you to repair. Give us a call to discuss any further issues or pricing on 0800 012 4258.