18mm. But it has to be a thin wall socket. The stock tool that came with it is best if you can find one.
The most common reason for a Honda 400EX not to fire is the need for a new spark plug. Try replacing the spark plug to see if that fixes the problem.
You need an 18 mm spark plug socket.
you need a special 18mm socket wth very thin walls. i got mine from pitposse.com, it cost $20.
They don't have spark plugs, therefore, no need for a wrench
bottom of the motor. if you have a custom skid plate you may need to take it off and cut a hole in it.
What wrench size is need for a 2007 Honda Civic oil plug?
On a 400ex the engine and transmission share the same oil. So when you change the oil in the engine you are changing the transmission oil as well. That is why you need an ATV or motorcycle oil designed for wet clutches.
use the spark plug wrench and use used mirror to find the rear spark plug, you need to two person to do this, then fell the spark plug rear with your hands then apply the spark wrench to remove the old spark plug.
5/8 inch spark plug socket.
i dont know exact size wrench but if you are having trouble making wrench fit, u need to use metric wrench
It means that you need to change your oil.
any oil filter wrench - it warps around the filter and you can adjust it - the wrench looks like a giant ring