1999 fatboy whining noise

I haven't had any problems with the balancing system. If the noise is coming from the left side, check the primary chain adjustment/adjuster. If it's coming from the right side, check the cam shoes. The shoes went bad in my '04 Fatboy and whined like it had gear drive cams. Good luck!

sounds like low to no fluid in gearbox. by rolling throttle it makes fluid rush to back of case . with low fluid all moving parts in case cant get enough fluid covering them causing whine and wear.

Clutch inner primary bearing gone or primary chain too tight. Auto adjuster on these bikes so more than likely bearing failure.

On a '99 Fatboy, you can use H-D Syn3 20W50 engine oil in all three locations. But, you can use most any lubricant you wish as long as it meets Harley's specifications. Amsoil, Royal Purple, Mobil V-Twin, just check the manufacturer's website for compatibility. On the Evo engines, I use H-D or Mobil V-Twin synthetic 20W50 engine oil. I use nothing but H-D transmission and primary lubricant in those two locations.

Good Luck
steve

No, the whining noise come from the primary chain as it spinning over the clutch and the sprocket motor.Perhaps the adjustment is too tight,this will cause the noise.Do you check the chain tight through the inspection cover on the primary .You need a 1/2 to 5/8 in free play.

clicking noise

thats from your primary most likely...try checking the fluid level and the slack in the chain ... my guess its one or the other

Harley's do run hot, anywhere from 220 to 240 normally, and a little hotter this time of year. I suggest running a straight weight oil, and a little heavier weight in the summer. I use Valvoline VR-1 30 weight most of the year, and 50 or 60 weight in the hot summer, and I use Lucas 20w50 primary/trans for the primary and tranny. I don't bother with the extremely high prices of the HD oils. For the whining noise, you need to determine which side of the engine it's coming from. Whining will almost always be in the bottom end. There's nothing in the top end that should whine, and if there is whining from the top, it's usually an air leak around the carb. Start by checking the fluid levels in the tranny, and primary. These are the two most common areas to pick up a whining noise. If it's coming from the left, it's going to be in the primary, and usually this is caused by low fluid levels. From the right, it's going to be either the tranny, low fluid, or the oil pump. The oil pump is a gear type system. If you're running a light weight oil, say a 10w40 or HD 20w50, when the engine heats up and the oil thins, it can cause the oil pump gears to whine a bit, especially in the summer heat. So, check the fluid levels, if they check good, then change the oil, since the summer is coming to an end, go with a straight 30 weight. This should clear up the whining noise. If it doesn't, get back to me with the exact location the noise is coming from, and we'll go to the next level of diagnosing the whine, but I believe that this will cure it.