Hi Ty, You can tell that the sprockets are worn out when the teeth become "pointy", as in Biglenny's machine...putting on new drive chains would be a waste of time and money because the worn sprockets would ruin the new chains in no time.
For Biglenny....can you please post some photos of the chain-case side of the mower so as we can see the entire chain set-up. Also from the original pics, I can see that you are missing the front roller height adjuster mechanism; the replacement parts are still available.
