My bike's front wheel was getting jammed. On inspection it was revealed that mud which carried pieces of stones and had hardened with time(after drying) was blocking its way inside front fender. It may also be because of I was having a bigger tyre(3.00-18) installed. So opened the front wheel and did get it cleared. Changez opening the wheel with ring spanner which I carried with me in tank bag. Thats why offroad bikes come with front raised fenders.