Clinician
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Post by paulz1265 on Mar 25, 2018 23:23:29 GMT -6
I made a complete tutorial about tuning the 4 stroke QMB139 50cc engine. In this video, I explain how to find the right main jet and pilot jet, how to adjust idle and needle height, and explain how the carburetor works. Check it out and share it! Thanks and have a wonderful day!
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Clinician
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Posts: 4
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Joined: Feb 28, 2018 0:35:27 GMT -6
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Post by paulz1265 on Feb 28, 2018 1:09:46 GMT -6
Hey everyone! I make scooter repair videos as a hobby! Some of them may be useful if you're trying to fix your scooter! I have 50 and 125cc Chinese scooters and I have 14 videos so far. Here's my channel link: www.youtube.com/mechanicexpress And here are a few videos: |
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Clinician
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Post by paulz1265 on Feb 28, 2018 0:59:53 GMT -6
A new carburetor is usually the best solution in this case. They have tiny passages inside them so cleaning doesn't always help. Before you install that carburetor, look at the jets and write down the jet size. There's a good chance you will need to tune your carburetor and change the jets.
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Clinician
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Posts: 4
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Joined: Feb 28, 2018 0:35:27 GMT -6
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Post by paulz1265 on Feb 28, 2018 0:45:51 GMT -6
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