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Help! 05 YZ250F seal change

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I have the fork apart but I don't have that nifty Yamaha tool that is needed to get into the base valve assembly (not the cap removal tool - I'm ok there). Do I need to take this apart? I'm hoping that I don't since I need the bike tomorrow at 7:30 am for the start of the Quicksilver.

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You do not need to get into the base valve to change the oil seal. I have an 05 YZ450F with about 35 hours on it and the forks seal need to be replaced. I should have done it when I changed the oil but...

Anyway no, just take the tubes apart, put the new seal on, put the tubes back together and replace the oil in the outer chamber (stock is 260 cc). I used Maxima 7.5 @ 275cc and I weigh 180lbs.

Hope that helps.

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