2000 Fazer 600 not starting

[jonr1x]

Hi all, I've got a 2000 Fazer 600 that won't start. I bought the bike about 3 or 4 weeks ago and on two occasions it wouldn't start without being bumped. Every other time it starts first push of the button. Now it will start first time but then cut out and won't start again. I've checked the battery and that seems fine. Are there any common things that a non mechanical person can check relatively easily? Thanks.