Question about 2003 Yamaha YZ 250 F
Hi, Peterwiscomb for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Part 32 Motocross Fork rebuild part 1 Removing the seals YZ250F
Havocware com How To Accurately fill your motorcycle fork tubes with oil
YAMAHA YZ250F Owner Service Manual
OEM parts for Yamaha
Posted on Aug 01, 2016
a 6ya expert can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
hi lilsilence, thank you for using fixya. below is a line from dirtrider.com, answered the same question for a 2003 which is the intro for speed sensitive suspension.
Several ways to go here. Remove half of the fluid in each fork and addback a 10wt. This will approximate a 7.5wt. Going to a 10wt. willreduce bottoming but will give you some harshness. Depending on yourweight and riding style it is difficult to give you proper advice, justgeneralities.
I use ATF fluid. I'm valved for wood and light MX, stock springs, and Iweigh 155 lbs. ATF is cheap and is something simular to 7.5wt. I'm noexpert and my explanation might not hold water but it works for me.
Mobil1 Synthetic ATF is a very popular fluid that will probably be the weight you want.
Seems to me that I can make much more difference in the action bychanging the fluid levels. If you mix up riding between track andtrail, you may want to consider sub-tanks.
Draw out half of the fluid with a piece of tubing attached to a saryngeand put back an equal amount of 10wt. Adjust the level from there tosuit your comfort.
Sub-tanks give a greater amount of adjustability and plushness. Pricey but do the trick when properly set up.
I have use close to the same method on my rm250 and have worked for me, i sure hope it will help you out in another way.
if you have other question, please let us know.
Posted on Apr 17, 2009
SOURCE: Fork Oil Capacity
Use Yamaha suspension oil #01. Amount is 19 ounces. Oil level from top surface w/o cap nut is 3.15" to 5.51". I am sending you a link to a site where you can download a free shop repair manual. It is actually a bit complicated as you will see in the manual.
Top rating due on this one! Thanks!
Posted on Apr 24, 2009
xjbike.com. They have all the details you need to know and where replacement parts too. You may have to do some of the things but it could just be an worn out o-ring.
It a great bike. Way ahead of its time.
Posted on Jul 07, 2009
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