1995 Rm250 Transmission problem

Hi guys I am new to the forum i never really use fourms cause i can always find out or figure out what is wrong with my stuff but i got this rm250 and i rode the bike twice and the engine runs great but the problem is it ran low on trans fluid/oil then it started to make a noise and i immediately shut the bike off and put the rear tire in the air and if you spin it or roll the bike in neutral it makes a chaffing kind of sound sounds to me like it is coming from behind the sprocket up front on the engine but not sure if its the clutch or what i am going to inspect the clutch today i was figuring maybe it got hot and burnt up from lack of oil but i put oil in the trans after i drained it and there was nearly any at all after the noise arrised but still no cure from adding oil because i started the bike in neutral and it almost wanted to shut off and the noise just keeps getting worse and worse if you have any insight at all to what is wrong please throw it out there i dont want to tear the motor apart but if it needs to be done i can do it as i know very well of how the transmission works i personally think its an idler bearing but i dont want to jump to conclusions thanks again -kyle

I think the bigger question is why it used the oil. You need to find that out first. Then I would suggest the the clutch center hub bearing is toast. I would suggest that you do a tear down and inspection of the engine and trans bearings.

Paw Paw

Well i found out it has a leak thats why it got low i havent had the bike long im going to go take the clutch cover off right now

It seems it has a crack on the case where the drain plug goes where it starts to raise up but im ruling out the clutch it seems the noise is right behind the sprocket i know it is a bad bearing it sounds like if you had a big roller bearing from a tractor trailer hub that was dry and you tried spinning it real fast it sounds like that i am about to post a video seems like i can trade it or just fix it

That bearing is the highest placed one in the trans and it would make sense it would go first. The case may be fixable, but I would take no chances and replace all bearings and seals throughout the engine and trans.

Paw Paw

bearings from the right source are not that expensive so replacing the ones you have to split the case to get to are about the minimum. that bearing has the most load on it than the others will especially when in first gear. it is also the one most likely to have dirt forced into it past the seal. and it very well could be the original. welcome to the world of 20 year old rides!!