Ninja 250R cold start

Hey guys
I took 09 ninja (900km odo) for a test ride today, before I got to the test ride stage, the cold start was rather bad; it took a number of attempts (even with choke) to kick over. I let it idle for 5 minutes once started, turned it off, re-started; kick over issue returned. Repeated the process, let it warm for 5 minutes took it for a 10 minute ride, turned it off & it started okay.
The bike appeared to have not been riden in a while as it was rather dusty sitting in the garage and there was less than 1/4 tank of fuel left.
Do you think its the battery, fuel gone bad or is cold start a known issue with these bikes?
Other than this & a loose chain; we couldnt find any other fault with the bike. It is due for its 1k service shortly.
Cheers
I took 09 ninja (900km odo) for a test ride today, before I got to the test ride stage, the cold start was rather bad; it took a number of attempts (even with choke) to kick over. I let it idle for 5 minutes once started, turned it off, re-started; kick over issue returned. Repeated the process, let it warm for 5 minutes took it for a 10 minute ride, turned it off & it started okay.
The bike appeared to have not been riden in a while as it was rather dusty sitting in the garage and there was less than 1/4 tank of fuel left.
Do you think its the battery, fuel gone bad or is cold start a known issue with these bikes?
Other than this & a loose chain; we couldnt find any other fault with the bike. It is due for its 1k service shortly.
Cheers