What's the size of the oil drain bolt?

[Juggler]

Anybody know for sure? I forgot to measure it when I was changing the oil.

Thanks in advance!

 

[flynjay]

M14 would be the thread size....it looked about that size to me, remembering the last oil change I did.

17mm for the hex head is correct.

Jay

 

[Johnnycheese]

14mmx1.25 thread size(same as sparkplugs, 17mm head size

 

[TexBusa]

Is the oil drain bolt supposed to have a locking washer on ? I just changed out my oil and when replacing the bolt, I noticed that it didn't seem to be locking in place very well and I have a slight drip of fresh oil. If there is supposed to be one, what size would it be?...maybe I just need to make sure it will fit the 14mmx1.25 as listed above?

 

[Juggler]

You need to have a crush washer.