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  #1  
Old 25-06-2011
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Changing fork oil on CRF250X

Thinking of changing my fork oil today. Havn't done it for a few years now as I used to get the local mech to do my Yamaha WR250. Looks simple in the manual.
Is it? anything to look out for.
I was going to check how much oil drained out and put same amount back in. I weigh around 100kg with full riding gear on.
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2010 CRF250X, 1980 YZ125G , 1978 YZ250E
2005 WR250F sold
2002 KTM400exc sold
1998 XR400 sold
1996 TTR250 sold
1994 XT350 sold
1975 TS250 Savage sold
1974 TS125 Hustler sold


1975 Bultaco Matador 250 project bike
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Old 25-06-2011
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Quote:
Originally Posted by Valleyam View Post
Thinking of changing my fork oil today. Havn't done it for a few years now as I used to get the local mech to do my Yamaha WR250. Looks simple in the manual.
Is it? anything to look out for.
I was going to check how much oil drained out and put same amount back in. I weigh around 100kg with full riding gear on.
Saw these the other day, may be helpful.
http://www.youtube.com/watch?v=Y43k1qFVGW4
http://www.youtube.com/watch?v=C9ICr...feature=relmfu
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Old 26-06-2011
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Originally Posted by mollystaff View Post
will come back and have a good look at these during the week. didn't get time to look in detail. Got club day today
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2010 CRF250X, 1980 YZ125G , 1978 YZ250E
2005 WR250F sold
2002 KTM400exc sold
1998 XR400 sold
1996 TTR250 sold
1994 XT350 sold
1975 TS250 Savage sold
1974 TS125 Hustler sold


1975 Bultaco Matador 250 project bike
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Old 04-07-2011
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outer is easy, put 400ml back in. inner needs special tooling and technique to bleed
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Old 04-07-2011
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360ml for me with stock valving, i have 340 in with G2R valves now.....

your oil volume will depend on your weight, springs and riding...
at 100kg you could probably go closer to 400 as Geds suggested.
have you got heavier springs ?

read your manual, it has a step by step guide to doing it, and all the oil volume spec ranges listed.
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Old 04-07-2011
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haven't done anything to the suspension since the day I bought the bike except start on stock settings. Bike handled that well I didn't change anything. Was flicking through the manual and yes I see there is a very comprehensive section in the manual. I havn't bottomed the suspension at any time so I figured the springs were ok. But again reading the manual I now realise I should probably go for a stiffer spring. Not something I'm going to rush into without a bit more reading and research. thanks for you input guys
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2010 CRF250X, 1980 YZ125G , 1978 YZ250E
2005 WR250F sold
2002 KTM400exc sold
1998 XR400 sold
1996 TTR250 sold
1994 XT350 sold
1975 TS250 Savage sold
1974 TS125 Hustler sold


1975 Bultaco Matador 250 project bike
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Old 06-07-2011
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Originally Posted by Valleyam View Post
haven't done anything to the suspension since the day I bought the bike except start on stock settings. Bike handled that well I didn't change anything. Was flicking through the manual and yes I see there is a very comprehensive section in the manual. I havn't bottomed the suspension at any time so I figured the springs were ok. But again reading the manual I now realise I should probably go for a stiffer spring. Not something I'm going to rush into without a bit more reading and research. thanks for you input guys
at 100kg mate stiffer springs front and rear would make a huge difference for you.
the stock springs were OK for me to trail ride, but it wallows around like a pig if you try to push it.....and i am 85Kg
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Old 06-07-2011
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Originally Posted by nawill View Post
at 100kg mate stiffer springs front and rear would make a huge difference for you.
the stock springs were OK for me to trail ride, but it wallows around like a pig if you try to push it.....and i am 85Kg
Sounds like I need to look into this suspension science in some detail. I'am quite happy with the ride the bike gives so imagine the treat I'm in for if I get it properly sorted. Might go to Hoeys here in S.A. and get them to give me a quote. In the mean time I've got the 24Hr trial here to get through on the week end. I'll just have to put up with what I'm used to, so no major drama at this stage.
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2010 CRF250X, 1980 YZ125G , 1978 YZ250E
2005 WR250F sold
2002 KTM400exc sold
1998 XR400 sold
1996 TTR250 sold
1994 XT350 sold
1975 TS250 Savage sold
1974 TS125 Hustler sold


1975 Bultaco Matador 250 project bike
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  #9  
Old 06-07-2011
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Originally Posted by Valleyam View Post
Sounds like I need to look into this suspension science in some detail. I'am quite happy with the ride the bike gives so imagine the treat I'm in for if I get it properly sorted. Might go to Hoeys here in S.A. and get them to give me a quote.
I have heard good things about Hoey's....

Pro-Moto in singleton, Suspension matters and Shock treatment are also worth a call for a quote, and a chat about what suits you....
dont limit yourself to your local blokes, as it is easy to send your forks and shock away to any suspension tuner. For after sales set-up and advice they are all great.....but keep in mind that you can take your stuff back to your local bloke as many times as you need till it is perfect.

without a doubt, it will be the best money you will spend on your bike
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