Is there any way to get a repair manual for the Ariens Sno Thro 10m. I down loaded the owners manual, this only gives a little about the machine.I have no reverse and want to see how to fix this,I would like to know if there is adjustment I could make. This machine has 2 foward speeds,turn lever right for slow,turn the lever left fast. The same lever straight up in the middle is netural,pull lever back towards the operator for reverse.When i pull the lever the machine moves half inch. thats it ?