Spark plug socket size?

[koozy]

Hey guys, for those that have actually taken out their spark plugs what's the plug socket size? I've tried 9/16", 5/8" and 16mm. The 16mm feels the best, but it doesn't feel quite right and I don't want to yank on it until I'm sure what the correct plug socket size I should be using. TIA. According to the manual the ST uses SP532 and the drive socket head listed is 9/16", but the socket I have doesn't seem to slip on the plug.

 

[JPGC]

I used the 5/8" spark plug remover socket. Worked like a champ! Here is a picture for reference of a 5/8" socket on the stock plug.

 

[koozy]

Thanks for the response and picture. I tried several 5/8" spark plug specific sockets and none would slip on, but none were deep sockets either. Perhaps I need a deep socket?, which the one in the picture appears to be. I don't have a 5/8" deep plug socket, so I'll need to pick one up if that's what it takes.

 

[JPGC]

You might want to pick up a 5/8" deep spark plug socket. It has a rubber isolator inside of it that prevents you from breaking the plug and it keeps the plug in the socket when you pull it up.

 

[koozy]

Whelp mystery solved. It turns out that the wall of all of the 5/8" spark plugs sockets I had were slightly too thick. I picked up a regular length, but thinner walled 5/8" spark plug socket, it fit and I was able to take out a plug. Thanks for the info again.

 

[JPGC]

Glad it worked out

 

[Oscar Sanchez]

Mind sharing which brand? My craftsman wont fit

 

[koozy]

Mind sharing which brand? My craftsman wont fit

I picked it up at Autozone, their private label brand. If it didn't work I could easily return it. Turned out that it worked.

 

[Oscar Sanchez]

I picked it up at Autozone, their private label brand. If it didn't work I could easily return it. Turned out that it worked.

Thanks a lot for the reply I'll get one of those then.