How much oil in front forks?

To change the fork oil, look down on the lower part of each fork leg just above the axle on the backside of each leg and you'll find an Allen plug or small screw. Take this screw out, hold the front brake and push down on the front forks. The fork oil will come out of the tube. Do both sides at the same time. Once you get the oil out of them, reinstall the drain plug. Then, take the large hex cap on ONE TUBE AT THE TIME and pour the correct amount of the correct fork oil into each tube. There is a specific amount of oil that must be poured into each leg. Since you simply drained your forks instead of disassembling them, you should use what is known as the "Wet" quantity of oil. I'm pretty sure your bike takes 9.0 ounces of oil in each leg. Call your local dealer and they'll tell you how much oil to put in. Your bike came from the factory with "Type E" oil in the forks. The viscosity of the oil determines the dampening effect of the forks. Heavier oil will stiffen the front forks, a lighter viscosity of oil will make the front end softer. You can check the Internet for fork oils and they should give you a comparison of what weight oil is equivalent to "Type E" oil. I think PJ 1's 30 weight oil is the same as type E Harley oil. Use only "fork oil" in your front forks as it has special "anti-foaming" agents in it. If the oil foams up, you'll lose the dampening effect in your forks.

Good Luck
steve

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.

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

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.

There is a seal in the "slider" of the front fork, the part that moves up and down. I haven't had a chance to work on the later forks but the earlier 41mm forks are quite simple.

Start by taking the drain plug out of the bottom of the slider and work the slider up and down to blow out all the oil. Then, remove the front wheel. Remove the top cap from the upper tube and loosen the top plug. Now, with the top plug loose, loosen the pinch bolts and slide the fork out of the triple trees. Remove the top plug carefully, There is a BIG spring in there. Once you have the plug out lift the spring out and set it asside. Notice the tapered end of the spring. It goes back in first. Turn fork tube upside down and allow as much oil to drain out as possible.

Now, look at the bottom of the slider where the axle goes. Up in a hole there is an allen head bolt. it is designed to use a special wrench but a regular 8mm allen key in GOOD shape will take the bolt out. It's best to use an air wrench to do this with. With the bolt out, the slider should slide right off.

Down inside the top part of the slider is where the seal is. Theres a snap ring, a spacer, and a seal. Replace the seal and put a little oil on it to assist reassembly. Put everything thing back together and add the appropiate about of oil. Since your forks are much larger than mine, I have no specs as to the quantity. The owners manual should tell you or a call to a local Harley dealer. Sorry but thats a good as I can do. There is a "wet" measurement and a "dry" measurement. Since you disassembled your fork, use the "dry" quantity of oil

The forks hold 286ml or 9.67 US OZ of oil, best would be to use hydraulic oil.
Good Luck.

FORK OIL
• Place the front fork vertically without spring.
• Compress it fully.
• Pour specified front fork oil up to the top level of the outer
tube.
 Capacity (each leg): 490 ml (16.6/17.3 US/lmp oz)
 99000-99044-L01: SUZUKI FORK OIL L01
or an equivalent fork oil
• Move the inner rod slowly with the special tool ten times and
more until no more bubbles come out from the oil.
 09940-52841: Inner rod holder
NOTE:
Refill front fork oil up to the top of the outer tube so that bubbles
are visible while bleeding air.
• Refill specified front fork oil up to the top level of the outer
tube again. Move the outer tube up and down several strokes
until no more bubbles come out from the oil.
• Keep the front fork vertically and wait 5 – 6 minutes.
NOTE:
* Always keep oil level over the cartridge top end, or air may
enter the cartridge during this procedure.
* Take extreme care so as to pump out air completely.
• Hold the front fork vertically and adjust fork oil level with the
special tool.
NOTE:
When adjusting the fork oil level, compress the outer tube fully
without the fork spring.
 Fork oil level: 153 mm (6.02 in)
 09943-74111: Front fork oil level gauge

Please check the owner's manual.

try chaining fork oil.
check your forks for play.
check your pads for uneven wear.
also make sure the stearing head bearings are ok.
hope somethig helps.
could also be caused by the unevenly worn front tyre.