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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Broken Kickstart shaft
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[QUOTE="DualSportr, post: 94823, member: 19592"] The reason we'd look for damage on the kicker was to see how hard a rider was kicking the thing at the end of the stroke. The rubber bumper will add life to the kicker, but may not protect the shaft very much. Basically, you should be through with your kick before it hits the peg. If you're still pushing with enough force to leave marks (from the peg), then it may be too much for the shaft and the internal gears. Just think about what happens when the kicker hits the peg -- imagine it in slow motion. All the force that was rotating around the center point (shaft), is now transferred to a pivot point (the footpeg), leverage pushes the shaft up, and can bend or crack it sooner or later. Of course, Yamaha should take some of the blame for this, as they installed a little 125 kicker on the thing. It makes you want to kick it hard and fast. Look at the kickers on the XR400, or the mile-long thing on the XR600. These took a long time to complete a kick, and so your power was gone by the time you came to the end of the stroke. These rarely broke kicker shafts. Of course, they don't see an MX track either! [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Broken Kickstart shaft
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