What brand scooter is it? The best thing to do is to remove the assembly properly and then replace the scooter with a push button ignition switch. That is what we did for our fleet of scooters after too many of our customers were losing keys when they rented scooters. Make sure you get a switch that is properly rated for your electrical system. Is yours a gas powered or electric?

Here is a link for some free online manuals. I have bought a few things from Rabbit and they are reptuable to deal with.

http://www.rabbitscooters.com/manuals.htm