MC 19 threaded spark plug

[Geebus]

Hi all,

my first post lol

So here it is I have just bought a 1990 MC19 CBR250R and one of the spark plugs had been threaded in when the previous owner was doing a service.

My question is can somebody please tell me what size tap and helicoil i need to repair this?

any help would be much appreciated

[gammaguy]

take a new plug into your engineering supplies store as a sample.it should be a 10mm thread,but they will want to check what the pitch of the thread is,so you get the right kit.

good luck!