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Yamaha MX & Off-Road Dirt Bikes
Yamaha PW50 questions
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[QUOTE="Jasle, post: 946798, member: 26675"] the bolts should be 5mm. the spec is 9.8 foot/lbs or 144 inch/lbs if I remember correctly. could be off a bit but definetly close. done several in the field without a torque wrench and they were fine. the arrow should always point to the exhaust port. Look at the piston. if you put it in backwards the ring opening will face the larger exhaust port and the rings will hang up in the exhaust port causing serious damage. just do one or two heat cycles and your fine. its really important to clean the mud off the bottom of the cylilnder regularly to keep the area around the exhaust port fried. they overheat there since they are air cooled and collect mud there. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Yamaha PW50 questions
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