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<blockquote data-quote="SRAD97750" data-source="post: 153682" data-attributes="member: 425">93 WR500Cleaned the chain and air filter. General wipe down.89 YZ250Ordered a new flywheel, woodruff key, and spark plug wire.Apparently the flywheel was dropped at some point, which tweaked the rivets. Over time, the rivets wore down due to fretting corrosion, and finally shook the flywheel retaining nut loose enough to kill the ignition and shear the woodruff key. <img src="https://www.dirtbikeaddicts.com/static/images/smilies/picard.png"&nbsp; class="smilie" loading="lazy" alt=":picard:" title="Picard&nbsp; &nbsp; :picard:" data-shortname=":picard:" />81 IT175Resealed the intake boot with aircraft grade fuel tank sealant. (PR1422 B1/2) I will re-install today.Dropped the needle clip one notch (richer)Retarded the timing to help avoid pinging at +75% throttle/+75%RPM86 KDXJust looked at the parts in a box... Still waiting to get paid and get my brother the piston kit for his birthday...-BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif"&nbsp; class="smilie" loading="lazy" alt=":thumb:" title="Thumb&nbsp; &nbsp; :thumb:" data-shortname=":thumb:" /></blockquote>

[QUOTE="SRAD97750, post: 153682, member: 425"] 93 WR500 Cleaned the chain and air filter. General wipe down. 89 YZ250 Ordered a new flywheel, woodruff key, and spark plug wire. Apparently the flywheel was dropped at some point, which tweaked the rivets. Over time, the rivets wore down due to fretting corrosion, and finally shook the flywheel retaining nut loose enough to kill the ignition and shear the woodruff key. :picard: 81 IT175 Resealed the intake boot with aircraft grade fuel tank sealant. (PR1422 B1/2) I will re-install today. Dropped the needle clip one notch (richer) Retarded the timing to help avoid pinging at +75% throttle/+75%RPM 86 KDX Just looked at the parts in a box... Still waiting to get paid and get my brother the piston kit for his birthday... -BIG DAN:thumb: [/QUOTE]

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