Welcome to Scooter Doc Forum! If you haven't already registered please do so by clicking right here. It's one of the few totally free things left in this world. If you have already registered thank you and let us give you a short tour around the Doc.
If you're here to ask a tech question just scroll down the main page to the Library and see if that resource can answer your question. You will also find valuable tech resources in Memorable Posts that may answer your questions. If not, scroll to the Clinic boards, find your cc class and open the board. Click "create thread" and post your problem. Please give us the following information so that we may help you more efficiently:
Your bike's exact cc rating and manufacturer if you know it.
Tell us the engine number on the left front lower case of the engine. Here are two views of it: #1 and #2.
Briefly, but adequately, describe what the problem is and how did it start.
Does something make it worse, does something make it better?
What have you done to try and fix it and with what parts?
Were there any performance mods to this scooter?
You will need to post pictures to help us diagnose your problem. Learn how to do that right here.
Don't forget to visit the Doc's Lounge at the top of the site and join in the fun discussions on all of the boards there. Post some Pics and Vids or just peruse the old posts!
Don't forget PJ's corner and check out the vendor section for supplies. Our tile ads at the top of the site are supporters and most of them sell parts.