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Everything Dirt Bike
Make / Model Specific
Yamaha
Yzx500 Cali plated
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<blockquote data-quote="ossagp" data-source="post: 199663" data-attributes="member: 1650"><p>usually when the frame is suspended from the steering head, it hangs pretty straight. once you have it up there i like to make sure that the swingarm pivot is really at a right angle to the line the plumb bob is going to create. so you put a level on that pivot and set the frame completely perpendicular to it. those small torpedo levels work pretty nice, but you can actually do a little bit better with a piece of hose about 20 inches long with some fluid in it. clear with some of that pink rv antifreeze is my choice (it shows up good and wont kill the cat). a half inch piece of clear and that is set about 3/4 full of the fluid works fine. hold one end of the tube with the meniscus just in level eye sight with the up side of the pivot at the countershaft side. hold the other end of the hose to the other side of the pivot and see where the meniscus is in relationship to the top of the pivot. use a cord wire etc from a bench etc to hold the frame in place until it the pivot is level. put the axle in and do the same thing. this time tape the hose in place once you adjust the axle until it is level. full forward or full back may achieve a perfect level, but seldom has when i was doing it. now you can mark the pivot by putting the wheel on and hanging the plumb bob and now you are probably straighter than it's been since before it was ridden. if you want to do it by putting the engine in place and marking the axle you can do that too. in the later you can get about as close by simply making sure the pivot is level and therefore at a right angle with the plumb line</p></blockquote><p></p>
[QUOTE="ossagp, post: 199663, member: 1650"] usually when the frame is suspended from the steering head, it hangs pretty straight. once you have it up there i like to make sure that the swingarm pivot is really at a right angle to the line the plumb bob is going to create. so you put a level on that pivot and set the frame completely perpendicular to it. those small torpedo levels work pretty nice, but you can actually do a little bit better with a piece of hose about 20 inches long with some fluid in it. clear with some of that pink rv antifreeze is my choice (it shows up good and wont kill the cat). a half inch piece of clear and that is set about 3/4 full of the fluid works fine. hold one end of the tube with the meniscus just in level eye sight with the up side of the pivot at the countershaft side. hold the other end of the hose to the other side of the pivot and see where the meniscus is in relationship to the top of the pivot. use a cord wire etc from a bench etc to hold the frame in place until it the pivot is level. put the axle in and do the same thing. this time tape the hose in place once you adjust the axle until it is level. full forward or full back may achieve a perfect level, but seldom has when i was doing it. now you can mark the pivot by putting the wheel on and hanging the plumb bob and now you are probably straighter than it's been since before it was ridden. if you want to do it by putting the engine in place and marking the axle you can do that too. in the later you can get about as close by simply making sure the pivot is level and therefore at a right angle with the plumb line [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
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