How do you re-spool a gas rc car, specifically a Master Vh-X5 model?

i need to know how to re-spool the pull cord and i have no idea how

Take the back plate of the block.It's exactly like a lawn mower except small.There's a recoil spring in it.Be careful when you remove the spring,WATCH YOUR EYES cause if it un coils,man and hits your eye,you're screwed.The spring may be broke,i done this procedure several times.Rewind the spring,wrap the string and before installation,be sure you wound it right,other wise you wasted your time.I have to be honest,i got so fed up with this extremely ridicules procedure,i bought a starter box.No more pulling and bloody fingers.I also picked up a tiger drive and a cordless drill.If you go with Tiger Drive be sure it's compatible . Feel free to mail me with any questions.