How do I add fluid to my forks?

i have a 82 Seca and i need to change the fork fluid. How do i get the caps off the top to add more fluid?

 

Just looked at the Seca I'm working on.
I'm almost sure your Seca has the cap held in with a retaining clip. Its a two person job, one pushes the cap down and the other can pull the clip ring with a small screwdriver. It only goes in about 1/2 inch , does not leave much room for extra hande to get in there. I used a socket on a extension to push the cap in, that helped.

 

If by chance you have one of the more common issues of rust buildup around the top cap of the fork. You may want to soak them with PBblaster, or Kroil before trying to remove them.

Be careful when removing the top cap. It is held under spring pressure, and could shoot out with some serious force.

Ghost

 

2 person recommended, but you can do it fairly easily with one. I've got an almost 2 inch spacer in mine and i can get them off by myself (Stock springs)

I use a phillips screwdriver to push down, and a flat head to pry out the locking ring.

Have o-rings handy the internal one will most likely have to be replaced (will leak air if old)

 

x2 on the kroil on the caps if they are rusted

 

Thanks for the tips. I will give it a go and see what happens. Once i get the top cap off can i just pour the fluid straight down in the tubes?

 

Drain the old oil first, then add the recommended ammount of oil. Your manual will have that information.

 

I knew that but i have seen on the forum people talking about a special tool
and i didnt know if i had to do something else.

 

Also my bike has a set of marzocchi shocks on the back. They have what appears to an air inlet and it has a dial that goes from 1-4 in both directions. Any ideas about these?

 

The "special tool" people talk about in regard to forks is for holding the damper rods for disassembly; not for changing the fork oil.

The Mazocchis apparently have air-assist and the dial is a damping adjustment; most likely rebound damping.