97 and 98 1100 ZXI
 

I have 2 1100 ZXI i bought last year. Both ran great all summer. Took them out this summer for the second time and 1 is cold start and bogs when you accelerate for the first time, after that it runs great. The other starts fine but also bogs at times then runs great after warmed up.
Would adding new plugs help this, i put new plugs in May 08 or will it be the accelerator pumps. Can you clean the pumps?

clean the carbs if the bikes have been sitting up.

Not sure how to do this. Can you spray cleaner while still attached to Jet Ski or will i need to take apart and clean each part? Is there a manual out there on how to do this? OR is there a good mechanic out in the North Fort Worth area that anyone knows of?