Just bought a used 2012 Sherco 290. I had a used 2011 Sherco 290. After I release the clutch the overall engine sound is different. Like a whining sound.

The dealer I bought it from says it's ok but has anybody notice the different sound of the engine. Appreciate your input.

Hi

an educated guess is thus:-

Firstly

when the clutch is released, this transmits drive from the crank, via the clutch outer basket onto the inner hub and onto to the gearbox input shaft. Even if the bike is in neutral this input shaft is turning quite fast.

Secondly

Whining is more often than not bearing related. There are 2 such bearings either side of that shaft.

Thirdly

If not bearings, neutral allows a number of the gears to idle (rotate freely) on the shaft. There could be a problem here (but i doubt it)

It would be interesting to see if the noise continues in the following circumstances:-

1. Engine running, in gear with the clutch in.
   
2. Engine running, in Neutral with the clutch in / out (youve already done this)
   
3. Bike on a stand, engine running, (very carefully) take it through the gears and see if the noise is in all gears.
   

Dom

its probably all the other sherco owners wishing they bought a beta

or perfectly normal when the clutch is in

I would think most likely this would be due to the given pair of primary gears. It seems to me thay vary a bit from bike to bike and as nong as your dealer stated it seemed within normal range I would not be overly concerned. If things were to change or worsten you may want to re-evaluate at that time.

have you checked its got oil in or sufficient oil ?

Mine whines when running on ATF fluid, My gasser and beta whined too when running it. I still use atf as I like the clutch feel. try an oil change to see if it cures it.

Thanks for everyone's comments. Staying with the 11 290.