How do you remove a foot brake from 20 inch kids bicycle so that your child can just use the hand brakes?

To remove a coaster brake (foot brake) from a twenty inch kids' bike and make it a single-speed bike, you can do the following:

1) Remove the rear wheel from the bike to access the components of the coaster brake.

2) Locate the hub assembly of the coaster brake. It's the cylindrical part with the brake shoes, drive gear and bearings inside.

3) Remove the axle nut and washers that secure the hub assembly to the bike frame.

4) Pull out the hub assembly and remove it from the bike. You may need to tap the axle gently with a mallet or hammer to loosen it.

5) Remove the coaster brake shoes and springs that are attached to the hub.

6) Clean and regrease the bearings of the hub. It's also recommended to replace them if they are worn or rusty.

7) Place the hub assembly back into the bike frame. Make sure that the brake shoes are aligned with the rim.

8) Secure the hub assembly with the axle nut and washers. Tighten the axle nut firmly.

9) Reattach the rear wheel.

10) Check that the brakes work well and the wheel rotates smoothly.

By following these steps, you should be able to remove the foot brake from your child's bike and make it a single-speed bike. Remember, it's always a good idea to consult with a bike expert or a local bike shop if you're not comfortable performing these tasks on your own.