Looks to me like a Villiers Junior carburetor which is the same as fitted to my MK2 villiers midget engine. Send george at villiersparts in the UK an email with a list of what you need. I just got a rebuild kit for mine which was about $28 and a throttle cable too just in case mine snaps which was about $20 (let him know how long you want the cable if getting one). Not sure if he will have everything you need but just ask him as alot of stuff isnt on the website.