How much fork oil does it take to refill the forks

The amount of oil that goes in the forks of a 1982 Suzuki GS 750T will depend on the type of forks that are installed on the motorcycle. It is important to use the correct amount of oil to ensure that the forks are functioning properly.
If your Suzuki GS 750T has standard telescopic forks, you will need to add 10.8 ounces (320 mL) of fork oil to each fork. If your motorcycle has air-assisted forks, you will need to consult the owner's manual to determine the correct amount of oil to use.
To add oil to the forks, you will need to remove the fork caps and use a fork oil level gauge or a piece of wire to measure the amount of oil in the forks. If the oil level is too low, add oil until the forks are filled to the correct level. If the oil level is too high, remove excess oil until the forks are at the correct level.
I hope this information helps! Let me know if you have any other questions.

level of fork oil is more important than the amount...it should be 120mm from the fork top when fully compressed without the springs.
But if you want an amount then you're looking at 470cc although this will depend on wether the fork internals were stripped and dry before refilling. That's why using level is a better guide.

Engine oil for the 11 is 10w40

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

If all you want to do it replace your fork seals, if you can find a way to jack the bike high enough, you don't have the fork tubes our ot the triple trees. Work with on fork tube at a time. Raise the bike up off the ground and take the front wheel and fender off. Brake caliper off it's tube. Now raise the bike up to where you've got about a foot of clearance below the lowest point of the slider. Look underneath the slider where the axle goes through and you'll see an 8mm bolt. Take this bolt out and your lower slider will come off. The fork oil will start to drain as soon as you take the bolt loose as well. Leave a pan under the upper fork while you work on the lower to catch the dripping oil. Replace the fork seal and reassemble that tube. Then, do the next one. Now, refill the tube with the correct amount of the correct oil from the top by removing the top cap nut. Pour in the correct amount of oil for a "wet" refill. The thicker the viscosity of the oil, the firmer the front fork action. I think they came with H-D type E which seems to be a bit softer action than 30 weight fork oil. Make sure you use fork oil. Regular engine oil or transmission oil should not be used and it will foam if you're riding down a rough road and your forks will collapse and not work until the oil settles again. Not a pleasant feeling. It's really doubtful if you'll get anywhere that is that rough with your Harley.

Good Luck
Steve

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

well first of all,,,,,you dont just top up the fork oil,,,,
you drain it all out and refill it with clean fresh oil....
the reson for this is,,how much oil is left in the forks?
if you over fill them with oil you will burst the top fork sead?? bad news that is! so find the drain plug (a nut or screw) at the bottom of each fork leg and drain all the old oil out first,,, then remove the fork top plug and tip in the right amount of the right grade of oil into each leg,,,then let it stand for a fuw minuets,,for the air to come out,,,do up the fork top plug and push the forks down a fuw times before riding it to spred the oil around inside the forks,,,oh,,by the way,,,change the fork oil yearly,,,,,

Remove the small plugs at the bottom of each fork slider and drain the forks. Do this by working the forks up and down until the forks are empty. Then, refill the forks with the proper amount of oil. Since you are not disassembling the forks and cleaning them out, you should use the "wet" measure of oil instead of the "dry" measurement.

Since you didn't tell me exactly what year model 883 you have, if the fork tubes are 39mm tubes (measure the top tube) use the following amount of oil. I use 30 wt. fork oil. If this is too stiff, drop down to 20 weight.

883 Hugger --- 10.7 ounces
all others --- 9.0 ounces

That's the only ones I have information for at this time.

There is a drain plug at the bottom of each fork. Just drain them and put the plugs back in then take the caps off the top of each and put in the propper amount of fork oil. You will need actual fork oil, so when you get it ask the shop how many cc's of oil to put in each fork.

Hi,
I am assuming the old oil is drained.
Once the tops are opened, lift the bike onto the center stand which will make the forks extend. Refill through the top of the fork with 12 oz of fork oil. The manual states that you must use oil with a weight of approximately SAE 3, and the amount going in needs to be equal in each fork.
Hope this helps

This is 1994 specific:

Oil = SS-8 10W
Amount = 15 ounces per fork leg (135mm down)
15 ounces or 460cc.