I just purchased a used 2006 Trek 4300 (non dics). I am a newbie. I do not know much about bike.
The bike seems like it is just dirty. Rear gear shift perfectly. Front gear has issue going from second to first gear. I will have it tune up. Everything else is looking good. It has not been riden for 2 years shown as how dusty it is. Now, here is the question. Do I need to be overhauled? I heard later bike has sealed BB & hubs. Is this true with Trek 4300? Please help. your advise will be appreciated.