i actually have the OPPOSITE problem. when i take Kash for walks, he RUNS the whole time because he's so excited. sometimes i can't keep up with him, and sometimes i feel i might be hurting him when i hold him back (then he just runs in place...) i'm like, "just WALK..." it's called a "walk" for a reason...LOL.
i didn't do anything special in order to make him like going on walks... so, i don't know how to make your puppy like it... i did read something similar to what another YTer posted (about letting your puppy drag the leash around the house). it might work.