On Sat, 23 Jan 2010 11:42:00 -0800 (PST), mark
wrote:

What side does a belt tensioner go on if the power pulley is on the
bottom and driven pulley is above it and they are rotating
counterclockwise. Also should it be closer to the power, driven or in
the middle? Thanks

The tensioner goes on the slack side; on the right in your case.

--
Ned Simmons