Step 1: Items...
lighter(refillable is better)
Ball inflater pump adapter
Step 2: Putting it together
get the lighter and the inflater adapter and carefully insert the adapter inside the small tube. sometimes the adapter may be to thick to get inside the lighters tube, if so just file it down to make it thinner.
Step 3: Inserting the rubber tube
Step 4: Fitting it...
basically you can see the servo arm moves as you pull the trigger on the control. you have to put the lighter on it so that when it moves it will push lighters arms and release the gas. Once you have done so you have to secure it down. make sure its not near anything that will get hot(eg the engine) otherwise you may have an unexpected explosion, lol.
just look at the pictures, should explain what i mean.