Hey guys I just did a fork spring upgrade and changed my fork oil the easy way.
I have an 09 FXDB with 500 miles on it.
I purchased the Works triple rate springs and also added the Rocor Intiminators (dampners) and used the AMSoil 10wt shocktheraphy oil.
I left the front end assembled and for me the easy way
Apply a blanket on the tank and cover the rest of the bike,fender ect...
Loosen the upper triple clamp bolts,
(loosen only) the fork caps. my handlebar was in the way
Jack the bike up so the front wheel is just off the ground.
Remove the handlebar and lay carefully on the blanket covering your tank.
Using special oil ringed socket (optional) remove the fork caps
Fish out the spacer and spring and washer. I used mechanics wire to hook it.
Using marine oil change dip stick pump(optional) pump out the existing oil
making sure to pump the assembled front end a few times to get as much oil out as possible. It pumps easier than I thought.
Optional Intinimator installation at this time, push it down with stock spring.
With front end hanging still add 12 OZS fork oil both tubes,
Pump 10 times minimum.
Now either lower the bike so the front end compresses all the way or block the wheel up all the way up.
So with the tubes compressed and springs removed fill to 4.5" from the top of the tube. (2009 FXDB) I took 23 ozs total each tube with the Intiminators installed. I used a brake bleeder hand pump to hold my level of fluid.
At this time I lowered the front end to expand and added the springs.
I did not use the stock spring and spacer anymore and used the three springs.
Reinstall the fork caps,use new O-rings.(special O-ring socket and T-bar),
I dry ran the caps to find the start point maked it yellow and it made the push turn of the caps easier.
Tighten the triple clamp bolts to spec
Reinstall the handlebars tighten to spec
At this point you can lower the bike and have fun.
Or you can check the steering bearing adjustment while your in the air.
The fallaway should be between 3 1/2 and 4 inches.(fender is 4 inches)
Hope this helps someone.