Good Neighbor?

I don't know how to approach this, so maybe someone could give me a suggestion or two. I just moved into a small house that has a little area in the back where I'd like to put in an herb garden. Since the houses are built so close together here, I'd also like to put up a 5 foot wooden fence so I could have a little privacy in my back yard during the summer.

However, the neighbor behind me has one of those revolving clothes line poles attached to a pole right on the property line. The clothes line extends over into my would be garden area. I'd like to ask him to move it back, but I know that this would involve some work on his part, sinking in a new pole to attach the clothes line to, etc. Should I make the request and offer him some money to buy whatever new equipment he might need for this project? I'd offer to help him move it, but I'm a girl and not all that strong or clever with construction projects (I'm going to get someone else to put up my fence).

I don't want to cause bad blood with the neighbor, but his clothes line does extend about 3 feet over onto my property, and I don't think its out of line to ask him to move it.

Any thoughts?