How do Fill Front Forks?

Start off by removing the forks from the bike, then remove the top caps (bolts) from the forks. Once removed take out the spacer and fork springs from the forks. Tip them upside down to get the fork oil out. Now with the forks empty from fluid and springs you will compress the forks all the way to make them as short as possible. You will need a fork dampening tool or a air gun to split the forks by removing the bolt inside the fork tubes. Once this is achieved you can pull the forks apart and replace the fork seals. When putting fork oil back into the forks if you are not sure how much to put back in, just compress the forks all the way down and fill each leg 6 inches from the top. That amount works for just about any motorcycle with conventional forks. Use 10 w fork oil.

Not brake fluid or Hydraulic oil ( oil weight is the issue)
Drain forks ( bottom nipple) , remove top bold , be careful it is pressurized by spring . Use the right tool otherwise will damage bolt and your face.

Front forks should be sealed properly, fork seal should be intact, no water or brake fluid in them. Right amount of fork fluid is imperative along with oil weight specification ( check manual and appropriate oil weight for your bike), wrong oil and amount can otherwise damage your forks.

Since your bike is a 2011 model, I'd take it to the dealer and let them check out the loss of power. On the front end diving, you may need to put a heavier viscosity oil in the front forks. You'll have to drain the forks and then refill them with the proper amount of oil of a heavier viscosity. I think the forks come with H-D type "E" oil that is supposed to be about 30 weight. Use only "fork oil". You cannot use engine oil.

Good Luck
Steve

Yes your fluid may need to be changed if you want a more firm front end. I don't know what type of fluid you have in the forks now but what you need to do is to go with a thicker oil. In my '94 FXDWG, I went to PJ1 30 weight oil. Since I don't have a book on your late model bike, I can't tell you how much oil to put into each tube. There is a "wet" and a "dry" quantity to add when you've drained them. If you simply drain the oil and refill the fork tubes, use the "wet" quantity of oil. If you disassemble and clean the tubes out, use the "dry" quantity when you refill.

To drain the oil, look on the trailing side of the fork sliders. You'll see a screw or a set screw in the slider. Take this plug out and some of the oil will simply flow out. To get all of it out, hold the front brake and push down on the handlebars. Now, oil will spray everywhere so don't do this job in your living room. Once you get the oil out of both tubes, reinstall the plugs and refill the tubes one at the time by removing the top cap out of the tube and pouring the prescribed amount of oil into each fork tube. Ride the bike and see if the front suspension is too soft, too firm, or just right. Remember, the heavier the viscosity of the oil, the more firm the front suspension is. If you can't get it right, you might want to consider changing the springs in the fork tubes.

Good Luck
Steve

If you are saying that your front suspension is too soft, you can change the fork oil in the front forks to a heavier viscosity. I think Harley recommends Type E fork oil. I've found that PJB 30 wt. fork oil works best for me.

Since I'm not familiar with the newer forks, I'll have to recommend that you ask the dealer how to drain and refill the forks and how much oil to put back in them. There are usually two amounts of oil to put in the forks. One amount is a "dry" amount to add when you disassemble the forks and then refill them. The "wet" amount is for when you simply drain the forks and then refill them. Naturally, the "wet" amount will be less than the "dry" amount.

Sorry I couldn't give you more information but my expertise is the earlier model Harley bikes.

Good Luck
Steve

Your front fork seal are bad and need to be replaced.
When you loose fork oil, your loosing suspension dampening and only riding on the springs.(POGO)

Replace both front fork seals and dust caps, and put same amount of fork fluid in both forks.

I bought my seals and caps for $30 on ebay, and then took my forks off my bike and took them to a shop and they charged me $75 to do the job.

You can take them the whole bike and they will charge $100 - $150 including parts to do the job.

A wobble that appears when slowing down is many times just low tire pressure. Check the front tire pressure should be 32-35 pds. Another thing that can cause a wobble is worn or loosely adjusted fork frame neck bearings(steering stem bearings). Disassemble around the handlebars down to the frame neck till you get the upper triple clamp off or can reach the adjuster nut , just underneath on top of the frame neck enough to tighten the steering stem bearings. You will need a shock adjusting tool (curved end with a single tooth) Comes standard in all Honda tool kits). Next, put a jack under the motor to lift the front wheel . Carefully wiggle the front wheel to see if you have a bad wheel bearing. If you do not have fork oil in your forks, you could possibly damage the chrome tubes. No oil would mean the forks would not go up and down smoothly. Do not add oil to your forks. Do not over fill your forks with oil. If you are not sure how much oil is in them, drain them and refill them with the correct amount. If you over fill the forks and drive the bike you will destroy the fork tubes.

yes i can,,,,,first drain all the old fork oil out,,,and refill them with the right grade sae10? and let the oil settel into the forks for an houre or so then bounce the bike to forse out any air traped in the fork pistons,, this should work ok then,,,
never just top up fork oil,,,,,you will pop the seals out?
all ways drain old oil out then fill up with fresh oil every year

First of all do not add oil to your front forks with out draining them first. If you over fill your forks with oil you will damage your forks. To change your oil in your forks, first center stand the bike and lift the front wheel by putting a jack under the motor. Remove the front wheel and axle and put a pie tin under the fork tube. Reach up into the bottom of the fork tube with a hex key and loosen the screw but do not remove. Now take the air pressure cross over tube off, this will allow you to unscrew the fork tops( On some bikes you may have to put a towel on the tank and unbolt the handle bars to get them out of the way.). Pull the screws out of the bottom of the forks and gently pull down the oil should come out now. If you need new fork seals take the lower tubes off and replace(You may need to take off the fender and hang the calipers with wires.). Turn the lowers over and dump out the oil and reinstall fork lowers. Snug up screws and sealing washers on the bottom of forks you can not tighten till you put on fork tops. Now pour in measured amount of oil, again do not over fill. Put on fork tops and air crossover tube. Now tighten screws on bottom of fork. Finish reassembling bike.

check and repack bearings in your front wheel and check and fill fluid in your front shock