Hello I am looking for a manual for model # C8MPT075F14B1. The furnace is a Kenmore and was installed in 2006. The issue I have is when the furnace kicks in it sounds like a freight train. I have been told that it might be the blower fan which exhaust the gas up the flue. If so can I replace this myself ? Any direction to a manual would be fantastic. Thank You

Installed on 2006,, it should be still under warranty,, call an kenmore dealer have them to tell you about warranty over the phone before coming for a service call

Thanks for your response. I should have mentioned that it was bought from sears, I have tried calling the hot line but they have told me that I need the original receipt. ( just bought the house in december). I will try kenmore. I did not know that they had a warranty as well. Thank You.