Question about 2000 Harley Davidson FXST Softail Standard

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Need to know oil line configuration for 95 softail custom . which oil lines run from pump to oil tank,oil tank to filter etc.

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Hey Cameron,
On most Harleys, the return line is the one closest to the filler neck.

Posted on Aug 25, 2009


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Posted on Jan 02, 2017


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Which pipe is the feed from the oil tank on 2000 evo 1200

The way to tell on Harleys is as follows (with explanations).

If you pull the oil lines one at a time, the following will happen:

On the oil return, and the vent line, oil will not flow out (except maybe a little residual oil).

On the feed line (oil tank TO oil pump), oil will flow out, especially it the oil cap is removed!

NOW, if you\'re asking because you want to install an inline oil filter or oil cooler, the feed line IS NOT the one you want to install this on!!!


The feed line is gravity fed to the oil pump, and there is no pressurization in this line, and the line could cavitate (suck air), especially if the filter/cooler are mounted too high!

The RETURN line is where you want to install these items, as this line is pressurized with the engine running, forcing the oil through them on the way back to the oil tank.

So which is the vent, and which is the return?

Pull the two lines you have already identified as NOT being the feed line (as described above), start the bike and run for ONLY about 5-30 seconds (or however long is needed), and see which line has oil coming out of it under pressure.

THIS is the line to install an oil filter and/or cooler.

Nov 29, 2013 | 2006 Harley Davidson XL 1200 C Sportster...

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Need to know how lines run from oil tank to oil filter

Technically speaking.....NONE!

In reality, an oil line runs from the oil pump return line fitting to the oil filter, and FROM the oil filter TO oil tank return line fitting.

Nov 21, 2013 | Motorcycles

1 Answer

Oil light won't stay off

Could be a couple of different things.

First off, check your oil it correct? (I know, kinda stupid of me, but I had to ask)

Just because you have oil doesn't mean the oiling system is working.
On thing you can do is remove oil tank cap, using a flashlight look down into the tank and see if you can notice oil being pumped back into the tank.
Or, you can pull the oil sending unit and see it oil pumps out the hole when the engine runs (this WILL be messy!).

Or, pull the oil return line at the oil tank.
IF you pull the feed line by mistake, you'll know!
Oil will run out the tank fitting until the tank runs out of oil! (opps, wrong line!)
When you pull the return line, you should get just some residual oil out the tank fitting (and the line).
Put the end of the line in a container and see if oil squirts out when the engine runs.

If all the above indicate oil IS circulating, the oil sending unit itself might be bad. They do occasionally go out.

Oct 13, 2013 | 2007 Harley Davidson FXSTB Softail Night...

1 Answer

1972 shovelhead oil routing

Bottom of oil tank to right/outside feed on pump. Inside is return line to top of tank where filter cap is. If you ran a cooler than run this line to the cooler and back to the tank. Above the pump is the large vent line. It goes to a tee fitting and than to the top of the tank and to the back/bottom of the primary. The small line goes to the back /center of the primary. It\'s the chain oiler.

May 10, 2013 | Motorcycles

1 Answer

Oil leaking from air filter

Hi Anonymous, oil leaking from your air cleaner is caused by oil carryover from the engine. For what ever reason the breather system is not seperating enough oil mist and air from the piston downstroke. There are cheap and quick easy fixes and there are more exspensive ones. Start by trying the following:
1. Run your oil level half way between the add and full mark when hot.
2. Run oil breather lines from head into a TEE fitting below carb/induction module then a single line into a mini filter under frame.
3. Purchase Arlen Ness Super Sucker.
4. Replace umbrella valves and realign oil pump
5. Upgrade oil pump and cam plate
Good luck and have nice day.

Jul 27, 2012 | 2003 Harley Davidson FXSTD Softail Deuce

1 Answer

How much oil does my 03 fxst hold ?

It holds three quarts of engine oil with a filter change. When you change the oil and filter, pour three quarts in the tank and start the engine up for one minute. With the bike still on the side stand, check the oil. The level should be between the lines. Do not "top it off". As long as the level is between the lines, whether the oil is hot or cold, do not add oil. Only add oil if the level goes below the lower line. The top line is "FULL HOT" and the lower line is "FULL COLD".

Good Luck

Jul 31, 2011 | 2003 Harley Davidson FXST Softail Standard

1 Answer

Hey i need a diagram showing how to install new oil lines from the oil tank to the parts of the bike that they go to . The bike is an 86 fxr harley davidson and i am having to change lines due to an oil...

Ok, let me brush some cobwebs off here and see if I can remember how the lines go on the FXR. On that model, the oil tank was under the seat and one line off the bottom of it and two at the top as best as I can remember. Of course the line off the bottom of the tank was the feed line and goes to the inlet of the oil pump. As best as I can remember, the oil pump had one fitting in the middle of the outer plate on the oil pump. This would be the inlet. If the fittings are on the top, the outer fitting is the inlet. The outlet from the pump was under the cam chest facing towards the front of the bike. A metal line ran from it to the oil filter and another line ran from the oil filter back towards the tank. The line changed from a metal line to a rubber line right about even with the oil pump and then it went up to the large fitting at the top of the tank. There was another oil line that came from the cam chest just above and slightly to the inside of the oil pump. This is a vent line that goes to the top of the oil tank. The crankcase vent comes from a fitting below the pump and to the inside and runs up and into the backside of the air cleaner. This is the best that I can remember on that model. 1986 was a long time and a lot of bikes ago. Remember, the oil comes from the tank to the pump, into the engine out of the pump through the oil filter and then back to the tank. If you have trouble figuring out the pump connections, Squirt a little oil into one of the fittings and spin the engine with the starter. Watch the oil, if it goes into the fitting, that's the intake. If it blows it back out, it's the outlet. If you have any problem, contact me directly and I'll make a drawing or something to send you. This forum will only allow for a file transfer of 150Kb and my files are usually larger than that. I'll send them as jpg files. Contact me at


Jul 14, 2011 | Harley Davidson FXR Super Glide...

1 Answer

Need diagram for 87 heritage softail oil line routing

The tank has four lines on it. The large line on back side of the tank is the oil drain line. The lowest oil line on the bottom of the tank goes to the feed side of the oil pump. The oil comes out of the other fitting on the pump and goes through the oil filter. It goes to the outer edge of the filter. The oil comes out of the center of the filter and goes back to one of the upper nipples on the tank. There is a vent line that comes out of the case just behind and above the oil pump that goes to the other high nipple of the tank.

If you can't figure out which fitting is which on your oil pump, jack the rear wheel up and put the transmission in high gear, remove the spark plugs. Then, using a oil squirt can, fill the fittings with oil. Turn the rear wheel in the normal direction of rotation and watch which fitting spits the oil out, this is the return side of the pump and the other side is the feed side. Depending on how the oil pump is set up, the feed fitting is the one closest to the centerline of the bike usually. But, It depends on how the pump is set up. If it only has one fitting on the pump outer plate, that is the feed fitting.

Good Luck

Apr 23, 2011 | Harley Davidson FLSTC Heritage Softail...

1 Answer

Where is the oil drain on the 2003 Heritage Softail Classic?

No expert on newer Hogs but try this.If tank is replica of wrap-around type look on flat right-rear bottom over rear pipe.Just a flat bolt-head.Yep,it's messy,cover the pipe.Like I said,no expert. Follow bottom most oil line from oil pump back to oil tank. Maybe it "t's" off under frame into line that drops down toward ground. You could get a catch pan under there.I vote for the nut on tank.Wrap around,you know, the battery is in it.

Mar 19, 2010 | 2004 Harley Davidson FLSTC - FLSTCI...

1 Answer

I am replacing the stock oil lines on my 02 883. I forgot what the oil route is from the pump. I know that there is 2 lines on the bottom of the pump and one a little higher. One of the bottom ones goes to...

An oil line routing diagram is in the factory service manual. Screw the oil filter off, remove your spark plugs, and spin the engine. If oil pumps out of hose going to the oil filter, you pump is working fine. If you do not have any oil pressure, your tappets will rattle badly. You'll know it.

Sep 19, 2009 | Harley Davidson XLH Sportster 883...

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