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Dirt Bike Brands - Other
What is the window in piston for?
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[QUOTE="Micahdawg, post: 742206, member: 21668"] My 97 RM250 has a nickle size hole in the intake side of the piston....the window. Is this the cranks only source to pull in fuel? Or does fuel draw in from under the skirt as well? Just curious, because I ran my piston backwards and am wondering just how little premix was getting to the crank. Micah [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
What is the window in piston for?
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