I need a yellow to complete the set...or are there others?

I was given a Victa Tornado mower (blue one) earlier in the year from a bloke who still seems to find stuff by the roadside (Campelltown NSW area}. I used it back in May and it started first time and worked fine. I went to start it a week ago and nothing, then noticed fuel dripping out of the primer cover(not the bulb).

I pulled the cover and the black needle was reluctant to part company with it's seat. Anyway, cleaned it all up, dropped everything, cleaned it all up, put it back together again and after blowing out the filter and, just because I came across some, gave it a puff of Aerostart down the tube.
Went like a bought one. I suppose I can expect more trouble with that plastic needle? I have learnt that the black needles are probably hardest to find on the garage floor!

Danny