I have assembled my frame but am now confused. Step 12: Hook up the chain states
Take the chain and loop it over the sprocket leaving the outside end dangling. Hook the inside end of the chain on the small nail. Take the stretchy cord and form a loop in each end using zip ties. Hook one end over the screw to the inside of the motor. Place the idler sprocket and S hook in the loop of the chain, then hook the other end of the stretchy cord to the S hook.
My kit did not come with stretchy cord, additional sprockets or S hooks. I got a Chain Tensioner Idler. I do not have any instruction that shows me how to use/attach it for I assume the same purpose. Can anyone please assist?