SHORT/LONG CASE

How do I know if my 150cc GY6 is a long or short case? I want to change my belt and it has no indication on it?

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With a few exceptions, the 125/150 GY6 has two belt sizes: 743 for the short case, and 842 for the long. If you have a 10 inch rim on the rear with a tire that is 3.50 wide or less, it’s a short case. The belt cover will also measure 16 inches from end to end. If you have a 10″ rim with a 4.00 wide, or a 12 or 13″ rim, you have a long case. The belt cover will measure 17 1/8″ long. Another easy way to tell is simply to count the number of retaining bolts for the belt cover, the short case has 8, the long one has 10.

When in doubt, ask the experts at tech@scrappydogscooters.com We know this stuff like no other.

MO!