I just inherited a Husqvarna TC-238TX ride-on mower with the house we bought. I just finished mowing the lawn for the first time and everything seemed fine, it cut and collected the grass nicely but post-mow I found this rubber belt (or gasket) on the lawn. It had some dried grass on it so it could have been there before I started but I'm not 100% sure of this.
It's got an external diameter of 100mm, internal diameter is 90mm, and width of the belt is 5mm.
I've looked through the operators guide and the only belt I can see on the mower is the long drive belt that loops around the various components.
Does anyone recognize this belt as something that could have come off the mower or engine?