[johnny88]

I will attempt to upload some photos of the entire process of replacing the 'shear pin'. I might call those pins the ' drive sprocket output shaft engagement pin'. The very first photo shows dirt piled up around the drive sprocket. You drive in conditions like this you will either snap the shear pin or break one of your tracks. I have done both.............the 4200XL is well made but you need to drive it with care. I will now try to upload a series of photos. (I have never posted on a forum)