im not sure the belt nearly fell off when we removed the cover it was that loose. and yeah it says to go all the way tight, the let the tention of slowly untill it reaches the center mark. (not sure they did that). live in a town with just under 2,000 people and youll understand """""professional mechanic"""". im a small engine mechanic, utv atv golf carts go carts weedeaters chain saws dirt bikes and mowers, so im aware of how things work, i could maybe understand 1 bolt, MAYBE! but 2!?!?!?! NO!! but anyways i drilled the 2 holes on the tentioner bigger to fit a bigger bolt, and i tapped the block to take the bigger bolt and the A LOT of LOCK TIGHT!!!! ive got just a little over 6k on it since i have done that, so its getting about time for me to check and make sure everything is nice and tight.

guess im just lucky that the belt didsnt come off, one of the bolts was rubbing the belt, slowly shredding the belt, and it was so bad that litterly half of the bolt head was gone!
dont trust anyone but yourself, its sad that thats what the world has gone to.