How much oil in the front forks - 2004 Harley Davidson FLHTCUI Electra Glide Ultra Classic

Question edited for a lot more clarity, 'year make model', first 3 words!

FRONT FORK Capacity: 0,13 litre. 20W Fork Oil.

https://www.google.com/search?q=2010+piaggio+150cc+front+forks+oil+capacity

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The fork oil should come to just below the bottom of the threads of the bolt by the o ring. do not use regular motor oil as it doesn't have the correct viscosity that fork oil has. Make sure both forks have the same amount of oil to prevent an unbalanced feel to the front end

Front Fork Oil cc (right leg):170
Front Fork Oil cc (left leg):170
Fork oil grade:10w
Valve Clearance Cold - Inlet:0.08
Valve Clearance Cold - Exhaust:0.08
Engine Oil Grade SAE:10w/30
Engine Oil Classification API:sg
Engine Oil quantity with filter (litres):0.9
Idle Speed (rpm):1400 - 1500
Spark Plugs Gap (mm):0.8 - 0.9
2 Stroke Tank - Litres:No
Float Height:14 mm

You may not have enough oil in the front forks or you may been a heavier viscosity of oil. I'm sorry but I don't have the oil capacity for your "Low Sportster". All I have is for "Hugger" models. They take 10.7oz. "wet" and 12.1 "dry". The difference between "wet" and "dry" is that if you simply drain and refill the front forks, it's call a "wet" oil change. If you disassemble and clean the forks of all oil inside, it's called a "dry" oil change. Contact the service department of your local shop and ask them how much oil goes in the front fork. To change the oil, there is usually a small screw in the trailing side of the lower fork slider down near the axle. Take these out and the oil will drain to a certain degree. Hold the brake while working the forks up and down with your weight to get all the oil that draining will get out of them. If you want all the oil out, you'll have to disassemble the fork tube. I would not do this if the seals are not leaking. Replace the screws in the sliders and then remove the top cap from one tube at the time and refill the tube with the specified amount of oil. Sometimes, the top caps can be difficult to get back in due to the pressure of the large spring in the front fork tubes. You may need a tool to compress the sping. I'm not sure on the "Low" model. I've always managed to the top caps back in without any special tool but I've never done a "Low" model bike. Harley uses what they call their "Type E" fork oil. I do not know what the viscosity of this oil is so I always use PJ-1 30 weight fork oil for most applications. Use only fork oil as any other oil may have a tendency to foam thereby negating any dampening action of the forks. If this doesn't solve your problem, you may want to check into changing the springs in the front forks. Progressive Suspension and others make kits for this.

Good Luck
Steve

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

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

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.

change the oil seals and oil in the fork,and avoid wheelies on the bike and off road biking