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Author Topic: Re: YZ 250 L powervalve mods  (Read 1899 times)

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Offline Ekka

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Re: YZ 250 L powervalve mods
« on: June 10, 2015, 09:07:34 pm »
Just put a power valve push rod that I had repaired and it appears to been modified in a way that it opens the valve slightly. Now the part that was repaired has nothing too do with this affect . Now was this some sort of a mod back in the day
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Offline alexbrown64

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Re: YZ 250 L powervalve mods
« Reply #1 on: June 11, 2015, 10:44:11 am »
I just had a look at the Tech Report for the 250L and there is no mention of a mod.  "Another tip which you may remember from the 80s - the YZ250 power-valve retaining clip (shaped a bit like a Y) is prone to snapping. Replace it with an old 520 chain link plate, the figure of 8 which will fit perfectly, has the correct size hole for the screw and will never snap".. http://forums.mxtrax.co.uk/showthread.php/343559-1984-Yamaha-YZ250L-Restoration-begins-!/page3
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Offline Ekka

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Re: YZ 250 L powervalve mods
« Reply #2 on: June 15, 2015, 08:26:50 pm »
Rode the yz on Saturday with that mod f@#k me it's like a light switch
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