1972 Evinrude 4hp lightwin outboard engine twin cylinder cold start

I just purchased this engine from a gentleman at work. He hasn't used it in a few years at least. He used it on a square back canoe. I put some fresh fuel in her, and only took about 4 pulls to get her going. I didn't realize it at first, but the throttle was working it's way back down while I was starting it. Seems to be running very well. It may end up on the water this weekend on my buddies sail boat, I had it on my boat last weekend as a backup kicker engine but never needed it. This is not the sailboat model but the standard canoe/jon boat model. It also came with a 6 gallon gas tank which would probably last all weekend at full throttle. This could be considered a few year cold start. If they only made stuff this nice today.....