Can I split the flywheel on a 2000 Sportster

Its probably the head gasket. you will need to replace it then flush the oild through to reomve any traces of water. best to replace all your hoses as well as the oil will have compromise dthe rubber and they will split not immediatley but the will split

Usually with a flywheel caused vibration problem, it's because one of the two flywheel halves shifted, causing an unbalanced condition.
This is what the flywheel assembly (with connecting rods) looks like:
https://www.sscycle.com/product/secure/images/products/5036.jpg
Usually, the left side shifts, as dropping the clutch acts almost like a brake on that side of the flywheel, while the right side continues to run free.
While I can't diagnose your particular problem from here, if the flywheels do need rebalancing/aligning, the engine cases have to be split to get to them.

1. Before servicing the vehicle, refer to the Precautions section.
   
2. Remove or disconnect the following:
   
   • Front wheel
     
   • Spindle nut
     
   • Wheel speed sensor, if equipped
     
   • Outer tie rod end
     
   • Stabilizer bar link
     
   • Lower ball joint
     
3. Press the stub shaft out of the hub.
   
4. Pry the inner joint out of the transaxle or intermediate shaft.
   

To install:

NOTE

Use new circlips, split pins and self-locking nuts for assembly.

1. Install the inner joint so that the circlip is felt to seat in the retaining groove.
   
2. Guide the stub shaft into the hub.
   
3. Install or connect the following:
   
   • Lower ball joint and torque the nut to 43-52 ft. lbs. (58-70 Nm)
     
   • Stabilizer bar link
     
   • Outer tie rod end and torque the nut to 17-25 ft. lbs. (23-34 Nm)
     
   • Wheel speed sensor, if equipped
     
   • Spindle nut and torque the nut to 144-187 ft. lbs. (195-253 Nm)
     
   • Front wheel
     
4. Check and/or adjust the wheel alignment.
   

If your flywheel went out, you've got major problems. You must have the correct flywheel for our bike. You cannot use a flywheel for an earlier model, it must be one designed for the Evo Sportster engine. Now, you can get a complete aftermarket flywheel from someone like S&S maybe. But, it still must be specifically for your bike.

hi, in this situation when replacing a conrod you should make your markings before disasembly, by using a straight edge and a scriber, by marking the face of each flywheel of the crankshaft, from left to right, i would suggest in this case, you get your crank halfs as close as you can to aligned by eye, press the fitted pin and rod about 3-5 mm into the mateing flywheel and recheck realignment, it is most inportant you that this as acurate as poss as misalignment will cause damage, have you taken any measurments of assembled crankshaft width? another important factor, when pressing the 2 halfs together, press the crankshalf half with the fitted pin into the other half, with the fitted half upwards so you are pressing on the pin and not the crankshaft, when you press make sure the pin enters the hole as true as poss as you will push a new hole or elongate the hole making it unusable. when almost together use a feeler gauge between the thrust washer and crankshaft of about 0.40mm when pressure is felt on the blade stop pressing, as you have now gone far enough, final truing up can be done with the use of a dti gauge and some v blocks, if out of alignment, you can use a copper hammer holding the crankshaft in your hand and quickly striking 1 flywheel in the direction required to align it, avoide striking it by pre drilled holes,paul

The connecting rods are known as "knife and fork" rods in that one rod sits inside the other at the crankpin. The "knife" rod goes to the front cylinder. The "spline" shaft you're talking about is called the "sprocket shaft" and goes to the left (primary drive) side of the engine. Try this site.

http://www.bikebandit.com/1990-harley-davidson-motorcycle-xlh1200/o/m1772

If this doesn't work, contact me directly at [email protected]

Good luck
steve

The top end comes off then the left and right side covers, flywheel, clutch and shift shaft. Now a case splitter is used to split the center case halves. To replace the bearing you will need a hydraulic press to disassemble and reassemble the crank halves. If the bearing is seized you should replace the bearing, crank pin and the connecting rod. The crank must be realigned using twin dial gages. Personally, I suggest a new crank assembly be purchased from www.babbittsonline.com ( $241 ). I would replace the crank end bearings at the same time and also the sprocket shaft outer bearing and seal. Please rate my answer.

If replacing the piston pin bearing no splitting is needed. If replacing the crank pin bearing splitting is needed. You knew that I am sure but I had to clarify. The flywheel is held in place with one washer and a nut on the end of the crank. Timing is accomplished with a woodruff key on the shaft. Using a flywheel puller tool is the proper method. It is a simple and low cost tool and it sounds like you have enough knowledge of engines to need one now and in the future. In a worst case scenario, use a mallet, striking the flywheel on four points around the perimeter of the wheel and in an "outward" direction. With some luck the flywheel will pop loose.

When you are purchasing the flywheel puller, buy a case splitter also. Also reasonably low cost, it makes the splitting clean and easy. I strongly suggest you install new crank bearings and seals. Whatever caused the crank pin bearing to go bad did not do the crank main bearings any good either. I would hate to see you have to split the case again eight weeks from now.

How are you planning to separate the crank halves, re-assembly and truing of the crank? The dealer should do this part. I can't find a free repair manual on the web but the next best is a parts diagram. Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.
www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx

Top rating on this solution? Thanks!

You will need a flywheel puller you can purchase from denniskirk.com or other mc tool outlet. This is a must tool. Otherwise you can do the job with simple hand tools such as wrenches, allen wrenches all metric of course, and a rubber mallet. It will take about two hours to disassemble. your crank will have to be rebuilt by a shop with a crank jig and a press. the halves must be aligned perfectly. then wash everything very good make sure you have all the exploded bearing cleaned out then make sure again, and reassemble. best wishes!

what oil you using? sounds like oil is heating up and not protecting like it should. Can you see any marks anywhere that its tapping?