CBR 1000F "Hurricane" 1987-1996 CBR 1000F

Fork oil level - Is the manual spec per fork?

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Old 03-16-2009, 11:31 AM
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Default Fork oil level - Is the manual spec per fork?

I got a spec of 14.1 oz (418cc), but it doesn't specify if that is total combined or for each fork separately.

Can somebody clarify please? Thanks in advance!
 
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Old 03-16-2009, 12:18 PM
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If I remember correctly that is for each fork , then you need to pump the fork at least 1/2 dozen times carefully and measure the oil level form the top of the forks. At least that was the procedure for my '91.
 
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Old 03-16-2009, 01:37 PM
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Per Haynes, 14.1 US fl. oz. per leg for 93 and later bikes.
 
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Old 03-16-2009, 05:20 PM
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Ok, I just added some more fluid to the shock setup, still dives a little so I'm going to add a little more eventually. I didn't mention, but, I only added 7 oz to each shock when I did springs this last weekend
 
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Old 03-16-2009, 06:31 PM
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Will try to find my manual and get back to you , as according to the Haynes manual you should also measure oil level from the top of the forks .

Can't remember off hand what the measurement is , but as you don't know how much oil you have in there now this may be the best way forward without draining the oil and starting again .

Also if you didn't pump the fork pistons there may be air in there.
 
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Old 03-16-2009, 06:45 PM
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Originally Posted by hawkwind
Will try to find my manual and get back to you , as according to the Haynes manual you should also measure oil level from the top of the forks .

Can't remember off hand what the measurement is , but as you don't know how much oil you have in there now this may be the best way forward without draining the oil and starting again .

Also if you didn't pump the fork pistons there may be air in there.
Cant remember the distance off the top of my head either - but I suggest you get hold of a syringe and some rubber tube - mark the tube at the exact distance (once someone can be bothered looking it up lol) and dip it into the fork until the mark is level with the fork top.

if you over fill a little you can then use the syringe to draw fluid out - when it suck air you have the right amount.

You dont actually have to have the EXACT amount - you can play around a bit to give yourself a firmer ride etc - but using the syringe method will give you a consistant amount over both forks - with is what you are really after
 
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Old 03-17-2009, 08:37 AM
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Fork oil levels measured from top of tube with fork spring removed and leg fully compressed .

  • 600 models..........................120mm(4.7in)
  • 1000h/j models.....................148mm(5.8in)
  • 1000K models onward.............172mm(6.8in)
This is measured with the fork vertical.

May just be easier to add oil a little at a time by trial and error untill you get the 'feel' you want from the front end otherwise you may as well whip 'em off and start the oil filling process from scratch.

Let us know how you get on.
 
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Old 03-17-2009, 09:44 AM
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I used a little bottle I saved from some 2-stroker oil, it has graduations on it for ounces (up to 7 oz). I know I have 14.0 +/- 0.1 oz in each fork based on that bottle. I pumped it quite a few times when I refilled them yesterday...on the center stand with a big strap on the handle bars to a cross beam rocking her back and forth On the cruise to work on the freeway this morning, the front felt great over the nasty michigan bumps but the rear is almost knocking me off the seat (although I was cruising 75-80 mph, 125kph). Will have to start tuning the rear....
 
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Old 03-17-2009, 10:17 AM
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The rear is adjustable from the right-hand side I think . Glad to hear you got it sorted
 
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