86 gs550ef fork seal replacement

[adam kinmond]

I need to change the fork seals on my gs as all the fluid has leaked out. i dont have a manual for this specific year and was wondering on the weight of the fork oil to be used and how much to put in. i am hesitaint to use the specs from the 1983 manual that i have.
Do i have to disasemble the forks to change the seal, or can i pry it out?

[BassCliff]

Hi,

A couple of guidelines:

Install Progressive Fork Springs

Fork Seal Replacement

Fork Seal Replacement (by Mr. Matchless)

The amount of fork oil is not as critical as the level of fork oil. It must be the same between the two forks, within 1mm. The level for my forks is 140mm. I would think yours would be about the same, maybe 5mm lower since the forks are a little smaller in diameter.

As for fork oil weight, that depends on you. I found 15wt oil too harsh and went back to 10wt with my Progressive springs.


Thank you for your indulgence,

BassCliff