My front fork of my XT660X started leaking. I asked my local dealer/service how much it would cost to change the seals and they said around €350.
Say what?!

I could change the seals and install �hlins springs for way less than that, assuming I could do the work my self.

Have any of you done it? Is it difficult?
I see that there are a lot of "how to" videos and guides online.

How long do you think would it take for someone who is inexperienced but can follow instructions?

I changed the fork seals on my XT660R last fall, and it can definitely be a bit tricky, especially if you don't have the right tools (I would also consider myself a bit of a newbie when it comes to working on bikes). You will almost definitely need either an impact driver or the special Yamaha tool (damper rod holder) to get the fork apart and back together again. I would recommend a fork seal driver as well, as that will help you out a lot when putting the seals into the fork. I had to resort to the "tape around the inner tube" trick when getting the bushings in, as my fork seal driver was not long enough to drive down the bushings, only the seals (worth checking if you consider buying one of those tools). I also had to create my own damper rod holder using a tapered wooden broom handle, when I accidentally screwed up while assembling one of the fork legs Eventually after a few nights out in the shed, I managed to get everything back together!

its not really that hard to do, changed on my xt660z Saturday which took less than 2 hours to remove wheel, forks etc and refit. big help if you have access to a windy gun to remove bolts in the bottom for the damper rods, if you don't have windy gun you can slide piece of wood down inside the tube turn fork upside down and push down on it while you remove bolt. take bits out carefully and lay out in order to help when putting back in. I purchased new clips as well which were after market but are to small so old clips went back in.

__________________
XT660z 2010 Blue few good bits added. Yamaha RD350 YPVS 1984. Yamaha RD350 YPVS 1989. Yamaha FZ750 1989. Beta 250 REV3 2001.

i never pull the forks apart to change the seals
but you do need a compresser...

remove them from the bike , remove the springs , empty the oil..
Take the dust cover off remove the circlip that holds the seal.
pump the forks up with air the seals will pop out..
I have a big tappered rubber plug with a 5mm hole down the centre
push it into the top of the fork put the air gun in the hole push like hell
usaly around 80 to 100 psi they start to move...


,,,

__________________
Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...