Removed the mower deck for repairs after the I removed the deck the mower would not run. The belts were loose and I could not figure out how tighten. There are three belts altogether.
It is a Troy built 17hp mower 42 inch deck.
If anyone can tell me get it moving I would appreciated it.
My opinion is that the drive belt will go from pulley to pulley and it will always be tight. Engine to transmission
Another belt would engage the blades, it will have an idler pulley that will swing against it and make it tight and start the blades turning
The third belt would be on the deck and connect the blades, with 3 belts on your mower, I would say it would always be tight too. It would be that way before you install the deck under the mower and the engaging belt would have to be routed during that procedure.
You must find a manual with the belt diagrams.
I forgot this could be a manual transmission. You could have a clutch or handle that swings a pulley over to tighten the belt for drive. Your drive belt is missing that pulley. IMO
See the new thread "Model 4658x92 manual". It sounds like a similar problem to yours with a found solution.