There are many, many ways to sign this concept. It all depends on what
you mean.
In general you mime the act of pulling whatever is being "pulled."
The generic sign for pull uses "S"-handshapes and looks as if you are
holding onto a rope (extending out in front of you) with both hands. This
version could be used to mean "pull something towards me" or "pull on a
rope."
PULL:


If you mean "pull" as in "Pull a tooth" then use an "S"-handshape
near the mouth (as if holding a pair of pliers) and mime the act of
pulling a tooth.
PULL-a-tooth:


"
Notes:
Occasionally you may see the "pull on a rope" sign above used to
mean "pull" a person or group to your way of thinking, (as in, "We
will trip to pull him into our camp"). This is a somewhat
metaphorical use of the sign and is not "wrong" however you should
also make sure that
if you mean "pull" as in "influence" then you know
and can use the sign for "influence."
Example, "He influenced their decision." See:
INFLUENCE
Also see: "PUSH"
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American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars