In the last 2 weeks I have rebuilt the clutch pack on a green field mower among other things the manual I copied showed some thing but lacked most information an thanks to grumpy an friends here I have learnt a lot but this [Censored] thing locked in drive an also reverse I have pulled it a part again to see what went wrong but cant find anything that causes it . It mite be the adjustment or on the top idler pulley.my question how do you tension the idler pulley on the drive belts