Hi guys

I have a 191707-2135-01 8hp motor that needs both valve seat and valve guides replaced in inlet side. Apart from buying the valve guide replacement tool (too $$$) is there another way to drill and inset the new guide. To take the old guide out I think I could tap and insert a bolt and pull it out but Im stuck on how ensure I insert the new one correctly. Is there someone close to Lilydale vic..that has the 5/16 tool I can borrow?

Aussie280