1) According to the Indian Motor Vehicle (IMV) Act 50, the transferor has to intimate the Regional Transport Offices (RTO) within 14 days of the transfer of ownership. Similarly the Act also instructs the transferee to inform the RTO about the change in vehicle ownership and produce all the required documents within 30 days of the transfer.
2) The transferor is required to fill Form 29 while the transferee is required to fill in the Form 30,
3) you have not mentioned how was payment received by you ? by cash or cheque?
4) send a letter to RTO that you had sold bike in 209 . enclose copy of letter received from delaer acknowledging receipt of the bike .
5) send letter by Regd Post AD
6) if the motorcycle was involved in some major accident or stolen and used for some anti-social activities police will file complaint against you as your name is reflected in the RC book