125-200cc Gearbox oil volume on WR / CR 125/ 150 2010 model

Hi Guys,
Replaced the gearbox oil with Motorex 10W30 a couple of weeks back and accidently overfilled it.
The manual says 800ml, I put 900ml in.

Anyway have ran the bike for 6 hrs now without issue.

Any comments on why overfilling is bad compared to benefits of better coverage over gears, cooler oil running temps, better for clutch to be fully immersed.

Husky knows best and says 800ml but.......

Thanks in anticipation.

oil pressure within the engine, too much and itll blow out seals etc..

These have a gearbox breather if I recall so that shouldn't happen Matman but it could happen if the hose got badly blocked. The only thing that comes to mind would be possible loss of power due to drag of the components trying to move through the oil when they shouldn't be. But I could be completely wrong.

There is no pressure in the gearbox. 100 ml will make no difference.

I use to always dump in 800cc for years but now I'm using the level screw and the bike only takes maybe 600. Seems like the bike isn't very fussy about oil level.

Overfilling can cause oil to get whipped and aireated. aireated oil looses its load-carrying capacity. The recommended fill quantity is carefully calculated to be enough that the transmission scavenges enough oil when the transmission is spinning and flinging oil but not so much that it is churning in it causing drag and possible aeration. I'm not saying an extra 100cc will hurt it. I am saying it is best to use the amount recommended by the engineers who designed the motor.

easy to solve

just turn out the oil fill level bolt (near the clutch cover) and let it bleed oil till it stops.

The bike have to be in a straight standing position.

Robert-Jan

Hi Guys,

Thanks for all the responses, the breather is free (sucked on it) and checked that twice for seepage and none. Have to agree with moto marc36 and take my hat off to husky engineers.

ta