Hi Guys,

finally got the 1wg run up the road but the front forks are real soft. I guess a change of oil and maybe some spacers on the springs will do the trick, but i can't find which oil to put in or what air gap there should be?

anyone any idea or can point me to some good resources for this??

cheers

Depends on what model you have, here are some of the front suspension specs from a previous post.
I used 15w oil instead of 10w, made a big differance on my 3TJ.
The FZR400A and FZR400SCA were what the yank model were called but I can't remember which Jap models they were.


FZR400RR 3TJ
43mm Fork Tubes
Fork Spring Free Length - 346mm
Minimum - 341mm
Spring Rate - 6.5N/mm (0.65Kg/mm)
Fork Travel - 120mm
Oil Capacity - 509cm3 (17.9Imp Oz)
80mm From the top of inner tube, fully compressed without spring.
10w Oil

FZR400SP 3TJ
43mm Fork Tubes
Fork Spring Free Length - 359mm
Minimum - 354mm
Spring Rate - 6.5N/mm (0.65Kg/mm)
Fork Travel - 120mm
Oil Capacity - 433cm3 (15.2Imp Oz)
106mm From the top of inner tube, fully compressed without spring.
10w Oil

FZR400A
Fork Spring Free Length - 412mm
Minimum - 408mm
Spring Rate - 4.4N/mm (0.5Kg/mm)
Fork Travel - 130mm
Oil Capacity - 440cm3 (15.5Imp Oz)
92mm From the top of inner tube, fully compressed without spring.
10w Oil


FZR400SAC
Fork Spring Free Length - 412mm
Minimum - 408mm
Spring Rate - 6.6N/mm (0.7Kg/mm)
Fork Travel - 130mm
Oil Capacity - 440cm3 (15.5Imp Oz)
92mm From the top of inner tube, fully compressed without spring.
10w Oil

It just dawned on me that you probably have a Genesis, which I think was the FZR400RU.

Did a quick search and came up with this...

http://www.fzrarchives.com/ipb/index.ph ... opic=48830

You will need to register to view the manual. I have forgotten my login details as I haven't used this site in ages so I couldn't access it.

Genesis /FZR400U/FZR400W (the non-EXUP bikes) 444ml /92mm Gap.
There are downloadable manuals (& parts lists) around for this to confirm.
Think the 'U' is Japanese & 'W' is US