250-500cc I Found metal fragments in oil on my WXE 250. HELP.

Today i change trany oil and found this. Seems to me like a piece of washer. What you recomend to do guys? Sorry for bad language.

does it shift and run ok with no weird noises? if so, i would keep running it. otherwise you will have to tear it all apart and check everything..

The bike run and shift good with no strange noises. I have planing to split the cases in winter and check everything then.
Thanks for the reply.

Hi. I found 1mm axial clearance on secondary shaft. May be need to split the cases?

A little in and out clearance is okay...up and down is not.

Kinda does look like a bearing shield.

When i push the shaft in to the left side i feel heavy friction between gears and shift forks when shifting. The gears almost lock.

time to split em

or risk catastrophic($$$$) failure.

Hi, i split the cases tonight and found missing washer between left case and 1st gear on secondary shaft.
the washer must be here between this gear and this needle bearing and have number 25 in service manual.

I have measured 0.8mm axial clearance on the shaft without this washer, what is recommended clearance for this shaft to know what is the true thickness of the washer and what material will be it.

Other parts of transmission are look good to me

And if i can use this thread to show you my piston and cylinder to tell what you think about it.

And here is the cylinder
Thanks for the fast replies guys. I will wait for your opinion.

sounds like you got lucky with the bottom end, i have no idea how that shim could come out tho. very weird
piston looks pretty good to me. no blow by past the rings. i suppose you could check ring gap if you wanted to but looks good

does perhaps look like theres alot of carbon on the piston crown...could be from low speed operation, alot of trails, slightly rich jetting, or oil choice. if it doesnt foul plugs and runs good i wouldnt worry about it. if you are going to reuse that piston it would be wise to remove all the carbon

Yes, the pilot jet is little rich. I will check the ring gap and use this piston. But i can not find the washer for the shaft, the size is 20/30mm and maybe 0.75 or 0.8mm thick. I only found 20/35/1mm thrust washer and plan to gring it to proper thickness, i do not have any other ideas.

try contacting halls husqvarna. the shims are used to "match" a gearset to a set of engine cases, so they come in different sizes. if you look at some of the 6 speed swap threads on here there is some discussion about it. maybe even a member or two here that have some extras. im kinda surprised thats all thats wrong tho. halls probably has your trannsmission bearings and anything else you would need. being in europe, you may have a dealer like this.

I'm am only telling you my opinion that piston is wasted , do your top end. You will be way happier for it. Cyl looks a bit scuffed as well, mike it for roundness and dia. and maybe as some do give it super lite hone (yes even on "chrome" cylinders).

^^^ Agree.

If in doubt measure the piston skirt, but I'd be surprised if you weren't up for a piston kit based off your barrel measurements.