Depends on what's wrong with it, need more info to help. If you have no experience with carburetors, then your best bet is to buy a new one. They're more difficult than people think.
i have toyota cressida 95 model , if i fix small jet , it gives black smoke , now i fix big jet the petrol consumption goes high carburetor is expensive i cant buy new1
Try to find a used one, or a parts car that somebody is selling and get one of there. I'm not too big on the carburetors, so I cannot shed to much light on the subject.
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