V-Belt tension seems too much

I have a Super Tomahawk Grinder from approx. 1983. ( Mine was made by W-W Grinder Co. but is like the Troybilt) I have everything up and running but when I took off old 5L350 V-belt and put on a new 5L350 the tightness put a great deal of tension on the clutch pulley and of course made pulling the starter rope very difficult. I temporarily put old belt on. Does any know what would be the problem. The adjustable tension bolts for belt tightening were backed off to the point of no pressure being applied. Thanks in advance. PS There is no idler pulley setup on this years model.

Here's a link to the operator's manual. It contains instructions for adjusting belt tension, and performing maintenance on the clutch.
http://www.brentchalmers.com/Manuals/1983WWGrinderSuperTomahawk-TomahawkManualWM.pdf

Replace the belt. All belts stretch with time, lose flexibility, crack and become rigid. Belts develop a "glaze" so to say where they contact the pulley's, and can start to slip requiring tightening to maintain non slipping contact, which stretches belts even further, and it's a compounding problem. Belts are expendable items that should be replaced every so often. A new soft flexible belt can make a world of difference.

there is a product called "Belt slip", that has the same effect as putting a sticky substance on the belt, obviously to prevent slipping.
It sometimes helps.