Bad move. WD-40 will dissolve the lube there already, and then evaporate - providing no lubrication to your chain. WD stands for water-displacement. It's good for cleaning thinks like chain-lubes. I suggest you leave the factory lube along, just wipe off the excess on the outside. And ask us what the best chain-lube is. Get a bucket of popcorn, and watch the imminent fight.

http://bicycletutor.com/no-wd40-bike-chain/

Sarah Palin is about as sexy as the lunch-monitor I had in grade-school.