what size socket?

[blasterrider123]

hey i was wounder waht size soket to use to get out a spark plug on my 400ex? also my 400 wouldnt start today i no the battary needs to be changed but i was thinking of checking my spark plug to see if its fouled? i mean it tryed starting a few times like it was gonna run then died out so im thinking its maybe my plug. i had the battary chager on it. any suggestions

[Doibugu2]

It has to be a thin walled 18mm.

What does it do when you push the start button?

[blasterrider123]

sounds likes its gonna start but just sits there and keeps going and doesnt start then it trys to and dies out so imthinking the plug might be fouled

[ReconRider25]

try using the choke and check the gas.:rolleyes:

[blasterrider123]

the gas was full and on and i was using the choke well trying and it still did that