Whining noise from primary case when you roll on throttle.

Question edited for clarity. Took me ages to work out you meant whining, not winding. I was thinking like 'wind noise', or was it like winding a clock?

That noise is caused by failing or dry bearings. It appears to be a known issue on that model!

https://www.google.com/search?q=Suzuki+Jimny+making+whining+noise

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Maybe loose cahin, maybe compensaor or clutch loose and rubbing case or cover???

Check primary chain to see if it's too loose.

If that's not the problem, check that the engine sprocket nut hasn't loosened.

How tight is primary chain? Has it lost the oil since you filled it?

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.

More than likely, it's either a loose primary chain or possibly the compensator sprocket. If the noise is at idle, this will probably be the case. Now, if the noise occurs when you roll the throttle on but goes away when just cruising, you may have a bottom end problem. If I were you, I'd disconnect the battery and pull the outer primary cover off. Check the torque on the compensator nut. It should be torqued to 150-165 foot pounds of torque. You'll need a "locking bar" to lock the engine and transmission to keep it from turning in order to apply that amount of torque. Check the adjustment of the primary chain. 3/4 to 7/8 inch with the engine cold. When you refill the primary with oil, do it with the bike standing straight up. Fill to the bottom edge of the outer clutch shell, the bright aluminum part.

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

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.