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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
87-yz250 ??
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[QUOTE="ron89, post: 1305254, member: 79669"] hi i have a 1987 yz250 i bought it acouple weeks ago it needed a piston and rings .. so honed out the cylinder, got a new wiseco piston and rings, and replaced the top end gaskets and all that but didnt do the power valve 1s yet .. umm i got her running good today.. but i think its runing lean i did let it idle for the break in and so on .. and i took it for a ride and just got on it a little bit and when i stoped the idle seemed to be a bit hight and it seemed to be a bit hot.. i have a little vid .. i was thinking of upping the main jet .. but i dont no what the stock main is for the 87 250. this way so i can order some bigger 1s. i have worked on 2strokes befor i have 2 blasters that i work on .. umm does any 1 have any pics of how the power valve gets hooked up?. so i can make sure i hoked mine up properly .. thanks Ron .. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
87-yz250 ??
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