What is the steer tube dimension for the 2004 jekyll 400?

Width 60 cm
Height 85 cm
Depth 55 cm

https://www.google.com/search?q=Zanussi+Aqua+cycle+400+dimensions

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$400? wow. When things get "whacky" with the guages, replace your ignition switch. NOT the switch your key goes into, it's located on the bottom of the steering column. Need to remove the plastic skirt that coveres the steering wheel column.

What year of jekyll is it? What's wrong with your old shock?

According to this site:
Vintage Cannondale Information and Help
Looks like it could be a 2002.

Disconnect steering column down by brake pedals and turn wheel with steering disconnected.....if squeak is still there its in the upper steering column bearings...squirt silicon spray down the top tube [below the steering wheel] until it runs out thru the tube lower bearing.
P.S dont forget to reconnect the steering!!!

I have a set of SKS X3's for my Jekyll with a Lefty. The front has a special large insert for the headshock-sized opening at the bottom of the steerer tube. Maybe check with a Cannondale-shop to find one.

Here's another solution at the bottom...

http://www.bikeforums.net/archive/index.php/t-277507.html

Jekyll

So you have done all this so far?

1. Disconnect and isolate battery negative cable from battery post.
   
2. Siphon power steering fluid from pump reservoir.
   
3. Remove air cleaner housing and inlet tube to throttle body.
   
4. Remove serpentine drive belt.
   
5. Remove hose clamp, then supply hose from pump.
   
6. Unthread tube nut, then remove pressure hose from pump.
   
7. Remove three pump mounting bolts through access holes in pulley.
   
8. Remove pump from engine bracket.
   
9. If pulley needs removal
   

I'm getting hydralic fluid in my engine oil. I was told that it's coming from my power steering unit. It's a JD 400 tractor/backhoe. Would this be correct?

From the Dell specifications page for Dimension 4600:
Memory
Architecture
Dual Channel DDR SDRAM
Memory connectors
Four
Memory capacities
128-, 256-, 512-MB or 1-GB
Minimum memory
128-MB DDR SDRAM
NOTE: Between 32 and 64 MB of system memory may be allocated to support graphics, depending on system memory size and other factors.
Maximum memory
4 GB
Memory type
PC2700 (333-MHz) or PC3200 (400-MHz) DDR SDRAM
(non-ECC)