The vehicle is an early automobile (car) called a "horseless carriage". Early cars had spokes on their tires as motorcycles do today.
To start it up, press the blue circle near the rear of the car. It will drive across the scene from left to right and stop under the tree. This will allow you to reach the roof of Edison's house (where the Aztec sun piece is, for 1519 AD).
In Time Tangled island, go to Pendulum's Lab. Inside he will tell you what to do. To turn on the machine, go to the bottom of the lab and push the plug.
the giant power switch to turn on the time machine is simply on the floor below it.
Return it to Thomas Edison on the second floor inside the house at 1877 AD.
Go to the first civilization. Go to the first building and talk to the 2 gaurds. Tell them you have the vase.
As you return each item to its proper time, that part of the Time Device will turn green. When they are all green, select the Lab (12 o'clock) and go back to Pendulum's Lab, where you can use the Future machine to go to the restored future and get your Island Medallion.
u go down on the bottom and push the plug and it will turn on :)
As each time recovers their missing item, the dial position for that location will turn GREEN on the time device. When they are ALL GREEN, you have returned all the items. Go to the Lab (12 o'clock) and go back to the (restored) future. Use the air tube and the monorails to get to your home at Sky Towers. Meet your future self and get the Island Medallion. (see related question)
To remove bike pedals, turn them counterclockwise.
To unscrew bike pedals, turn them counterclockwise.
Battery has enough to turn the engine but not enough to provide spark at the same time. Confirm by jump starting.
In 3rd part of junkyard island.. brake down a wall to a cave..the bike is in there.. good luck :)
in mauville city your choices are a mach bike (very fast but hard to turn) acro bike (a bike that is not very fast but easy to turn and you can do stunts with it)