Electronic fuel injection has made its way on to most modern small motorcycles and scooters, and while it makes motorcycles and scooters run better and our lives easier, it doesn't necessarily make everything easier. Say you're deep into a road trip, no signs of a petrol station, and you run out of fuel, yet your buddy has plenty to loan. Without the simple disconnection of a fuel like, how do you get the much needed liquid in his fuel to yours?
A siphon. You could carry a generic clear plastic hose and do it the old-fashioned way, but there are a few products on the market that have zero possibility of you drinking gasoline and inhaling noxious fumes. Most of the specialized siphoning fuel tools have a one-way valve that you repeatedly dunk to suck up fuel until there is enough in the tube to start flowing on its own, some even have little hand pumps to assist you. No matter which tubing you chose, make sure you have some sort of receptacle for the fuel – a crushed plastic water bottle works fine.
If you think that running out of fuel will not happen to you, remember you could always make new friends by carrying a small rubber hose and a siphon tool.