I am trying to replace the spark plug on my 2005 CRF 450 R ....it has been sitting for about 1 yr without running and I am sure it needs to be replaced....Is there an easy way to do it or do I need to pull it all apart or is here an easier way?

Hi jjb
To give you all you need to do change the plug, and swervide the bike, you can download a service manual for free from here. If the the bike has been sitting for a year, to look after the engine BEFORE you start it, you should do a few other things also. A quick list 

1. The engine oil will need to be changed, 
2. clean and check your air filter
3. Drain any stale fuel from the tank and carb, refresh it, prime the carb
   
4. Remove the plug, and put a dribble of 2 stroke oil into the chamber
5. Crank the engine over a few times with the plug out.
6. Fit the new plug
7. Start it up, it may smoke a little initially, but this is ok.