2018 Yamaha YZ250F Starting Issues

Hi all, I recently purchased a 2018 Yamaha YZ250F.

Struggling to start it (kickstart only)

Is there a certain knack to starting these beasts? No throttle I presume seeing as it’s an EFI as well as TDC kicks.

Considering valve clearances… starts fine bumping it though. I always personally thought valve clearances only give trouble once hot? After bumping it and once up to temperature it will kick over first time?

First thing I done is replaced the spark plug with an NGK plug, strange thing is I’ve only taken it out twice to a track treating it gently as I was getting to grips with a new bike as you do but it was starting fine. It wasn’t until I washed it and put it in storage (dry) for 2 weeks or so and it’s been hesitant since. I’m wondering whether the tick over isn’t quite right or something silly?

Any suggestions would be much appreciated, thanks in advance.