Question edited for clarity.
Question moved from Honda to Jonway.
Buy parts for the scooter you have. Trying to guess parts from other models and makes it fraught with danger and disappointment.
https://www.google.com/search?q=Jonway+Master+2+Parts
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I put in your scooter on google and added how to rebuild came across a manuel see if that helps .There are some sites you can ask on as well that have worked on the same bike .