View Full Version : zxr250a fork oil - how much?
mister.koz
6th April 2008, 15:36
Greetings,
I can't find anywhere in the service manual how much fluid to put into the front forks, all they say is put the special kawa tool in and when it sucks out oil, you have too much.
A mate of mine and i changed the fork seals and using an eyecrometer we figured that the fluid level was about right, we ended up putting about 320ml in both sides, they feel perfectly even, same weight etc. I have them back on the bike and it feels very good under braking etc...
Anyone know how much the really should have?
The Pastor
6th April 2008, 15:51
Why didnt you measure it before you tipped it out?
Mikkel
6th April 2008, 20:28
Measuring the volume is a bitch to get right.
The best way to do it is to know what level (in mm below the edge of the fully compressed fork) is correct, then just drain both forks, top them up and then siphon out oil until both sides are at the correct level.
However, if it feels right it's probably not too bad ;)
mister.koz
6th April 2008, 20:40
we replaced the seals because they had perished and were leaking so i couldn't measure how much to put in :(
The manual talked about a level point about 85mm from the top of the shaft with the spring out, i am guessing the 85mm is for displacement when you put the spring back in and its compressed.
Ah well i guess the speed tech guys will be able to give me a fair idea of how much is good and bad.
Mikkel
6th April 2008, 20:45
we replaced the seals because they had perished and were leaking so i couldn't measure how much to put in :(
The manual talked about a level point about 85mm from the top of the shaft with the spring out, i am guessing the 85mm is for displacement when you put the spring back in and its compressed.
Ah well i guess the speed tech guys will be able to give me a fair idea of how much is good and bad.
Well, if the manual (and I don't know where you found one in english for the zxr250a!) says 85 mm from the top with the spring out - then it's quite simply 85 mm from the top (fully collapsed fork). You can suck it out with a syringe and a piece of plastic hosing...
mister.koz
6th April 2008, 20:53
yeah, but then i am not 100% sure i have the zxr250a manual :s it doesn't mention in the manual anywhere about 250(a) or the year this manual works for and there are some inconsistencies. The site i downloaded the manual from said zxr250a but it also had allot of advertising on the page so you never know...
I think that its right (how different can the shocks be between a & c??) but i am known to be particularly over-paranoid about anything to do with shocks and brakes :)
Vacarious
12th April 2008, 18:45
i have a ZXR250a model also and i was wondering where you got the manual from
thanks
mister.koz
12th April 2008, 20:33
Hey mate,
Its the wrong manual, its for a c model, found it on the net but i could provide a download for you if you need it.
Although its for the wrong model, its got some good info in it for general stuff.
its 60mb.
cheerz
Vacarious
14th April 2008, 09:11
yeah a download would be good
thanks
mister.koz
14th April 2008, 09:21
cool as, its on my web server so i wont post it publicly
skidMark
14th April 2008, 09:29
cool as, its on my web server so i wont post it publicly
Could i please grab it too? :niceone:
Cheers!
mister.koz
14th April 2008, 09:31
Sweet as, will pm the address
mister.koz
14th April 2008, 09:32
If people want it, i will pm the address to them, but i can't have it on there too long :)
Vacarious
14th April 2008, 19:30
thanks for the link :)
westie
14th April 2008, 20:10
Make sure you pump the fork(5 times) and then the internals(10 times) once filled but before you take the measurement.
mister.koz
14th April 2008, 20:33
Thanks man, yeah i got that much from the manual :) swapped the oil out and its all good :) took it to the speed-tech guys here in hamilton and they told me the forks were good from the outside, tested braking etc.
All good :)
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