Below are some of the questions we receive on a daily basis regarding the 150cc GY6 engine, and 150cc buggies in general.

- I can’t remove the clutch (or variator) nut, is it reverse thread?

- How do I remove the odd nut that holds on the starter clutch?

- Something in the rear of my buggy makes a loud “BANG” when I’m accelerating fast or climbing hills, is that the sound of my gears skipping teeth in the transmission?

- My buggy idles great but when I step on the gas it dies before moving, what might this be?

- When I try to start the engine I hear a grinding noise but the engine doesn't start, is my starter bad?

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Q. I can’t remove the clutch (or variator) nut, is it reverse thread?
A. No, they are both standard thread. An impact wrench is best used to take these off.

Q. How do I remove the odd nut that holds on the starter clutch?
A. That is a “spanner” nut. To get it off properly you will need the correct spanner wrench. However, we use a punch and hammer here to remove the nut and replace it with a new one afterward. Remember it’s a reverse thread so turn right to remove.

Q. Something in the rear of my buggy makes a loud “BANG” when I’m accelerating fast or climbing hills, is that the sound of my gears skipping teeth in the transmission?
A. If the gears in your transmission "popped" out of place even once, there would be some pretty impressive internal damage. That loud bang you’re hearing is the chain skipping a tooth on the driver sprocket and slamming back down on the next tooth. First, check the tension on your chain. If tension seems fine then the skipping chain is most likely caused by a flex of the tensioning components when under load. Checklist: Fatigued stock chain tensioner, worn motor mount bushings, stretched chain.

Q. My buggy idles great but when I step on the gas it dies before moving, what might this be?
A. Most likely an intake leak. Check your vacuum lines and intake manifold for cracks or other leaks. Most specifically the vacuum line that connects from side of the carb to the intake manifold.

Q. When I try to start the engine I hear a grinding noise but the engine doesn't start, is my starter bad?
A. Most likely your starter and the internal starting gear are just fine. The usual culprit behind this grinding noise is the starter clutch on its way out.


Q. M?
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More Q&A's will be added as soon as you ask them!