Before setting out on a long ride, it is necessary to be prepared to carry out some essential repairs on your bike by yourself, in case you are stranded at a deserted area, with no help nearby. If you are prepared, you'll save the time waiting for help, and you can reach your destination faster.
In case your throttle cable snaps, you'll need to replace it. Here's a video on how to change your bike's throttle cable. This should give you a fair idea of what's involved.
Make sure that you carry all the necessary spares with you when you are embarking on a long tour. Also, make it a point to head to the service centre and learn more about changing the throttle cable on your bike first hand.
(Video credits: PartsBandit @ YouTube.com)