Brass tubing runs thru the nose and holds it down, a small piece of foam seals it off. On the rear mount, Two O rings thru the cowl and a slot in the back set against the rear brass tubing and holds it, fuel tubing keep's it from slipping.
To remove cowl, you slide off two pieces of fuel tubing and one side of the O ring, lift the cowl to a 45 angle and slide forward and its off, simple and lite,