One of my spark plugs has worn away the thread were you screw it in would it be easier to get a new part were the spark plug goes or to get it re bored also what is the part called were the spark plug goes thank you for any help with this sorry for my novicenuss on this I don't know much about the mechanics of motorcycles what would be the price for getting it recoiled thanks

Edited September 24, 20213 yr by Yam am ya Haas Nicolas
More info

I think I have found the problem it needs to be re helicoid to the cylinder head does that sound right?

 

Yes" or a time sert,, but may need to take head off,  as  swarf  may drop into the cylinder ,

you can do it in situ, use plenty of grease to catch the swarf and vacuum out the cyl.