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Everything Dirt Bike
Make / Model Specific
Yamaha
1988 power valve NLA
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<blockquote data-quote="SRAD97750" data-source="post: 179621" data-attributes="member: 425"><p>I am posting this for comparison, as the 89 models are still available and used stuff is on ebay. Not sure if it will work for you though. Everything looks very similar.</p><p>1988</p><p>[ATTACH=full]24080[/ATTACH]</p><p></p><p></p><p>1989</p><p>[ATTACH=full]24081[/ATTACH]</p><p></p><p>[ATTACH=full]24082[/ATTACH]</p><p></p><p>[ATTACH=full]24083[/ATTACH]</p><p>[ATTACH=full]24084[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]24085[/ATTACH]</p><p></p><p>After evaluating the differences I have found they are identical except for the power valve governor arm attach style and the LH side on the 1989 has a set of stops in the cap.</p><p>The 1988 is a stud with a nut, where the 1989 is a bolt holding the arm to the valve itself.</p><p>I think you could figure out a way to mod the valve and governor arm from a 1989. Parts are available but not necessarily cheaper than oem.</p><p></p><p>Good luck and let us know what happens!</p><p>-BIG DAN <img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 179621, member: 425"] I am posting this for comparison, as the 89 models are still available and used stuff is on ebay. Not sure if it will work for you though. Everything looks very similar. 1988 [ATTACH=full]24080[/ATTACH] 1989 [ATTACH=full]24081[/ATTACH] [ATTACH=full]24082[/ATTACH] [ATTACH=full]24083[/ATTACH] [ATTACH=full]24084[/ATTACH] [ATTACH=full]24085[/ATTACH] After evaluating the differences I have found they are identical except for the power valve governor arm attach style and the LH side on the 1989 has a set of stops in the cap. The 1988 is a stud with a nut, where the 1989 is a bolt holding the arm to the valve itself. I think you could figure out a way to mod the valve and governor arm from a 1989. Parts are available but not necessarily cheaper than oem. Good luck and let us know what happens! -BIG DAN :thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
1988 power valve NLA
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