See also:

How to use the back button
Push the BACK button to return to the previous screen. ...

Wheels and tires
If you have a flat tire, see “Flat tire” in the “In case of emergency” section of this manual. ...

Battery
● Keep the battery surface clean and dry. Clean the battery with a solution of baking soda and water. ● Make certain the terminal connections are clean and securely tightened. ● ...