red_ryder
02-14-2010, 01:58 AM
Here's the skinny: Rode the 83 250R all day long with no problems. End of the day, it won't shift down into first. I pulled the clutch out and the pawls look to be fine, so I'm guessing the shift fork is the problem. From what I've read so far, this is gonna be a case splitter and the part is discontinued. So... I found me a complete used bottom end. Unsure of it's condition, but I was told it was in the process of getting a top end job and never got finished.. I don't know where it's been at, for how long, or anything like that. It does seem to shift fine on my workbench, but that's about all I've done with it so far.
I was thinking, pull the top end off of mine then slap it onto this bottom end (moving the piston as well because the one in the new bottom end doesn't look so great). Could it be that easy or am I missing something? Now the deepest I've ever gotten into a motor is pulling a clutch out of one the other night. Wasn't hard, I have a manual, but I'll admit cracking a case open scares me. I know new gaskets are needed and everything needs to be clean. I am worried about a couple spots on the bottom end. It looks like someone used a screwdriver to get the jug off (see pictures). Is this repairable? If so, my next question would be about how to clean or flush out the bottom end before installation. I have no idea what could have fallen inside the case during it's storage, but it's not the cleanest looking. Any tips on flushing out the case? Thanks for any help you can shoot my way.
http://farm5.static.flickr.com/4016/4354857091_bd3b309804_b.jpg
http://farm3.static.flickr.com/2793/4354857321_9f14b322ef_b.jpg
http://farm5.static.flickr.com/4014/4355602578_617f18fa0d_b.jpg
http://farm5.static.flickr.com/4041/4354856911_c696386b17_b.jpg
I was thinking, pull the top end off of mine then slap it onto this bottom end (moving the piston as well because the one in the new bottom end doesn't look so great). Could it be that easy or am I missing something? Now the deepest I've ever gotten into a motor is pulling a clutch out of one the other night. Wasn't hard, I have a manual, but I'll admit cracking a case open scares me. I know new gaskets are needed and everything needs to be clean. I am worried about a couple spots on the bottom end. It looks like someone used a screwdriver to get the jug off (see pictures). Is this repairable? If so, my next question would be about how to clean or flush out the bottom end before installation. I have no idea what could have fallen inside the case during it's storage, but it's not the cleanest looking. Any tips on flushing out the case? Thanks for any help you can shoot my way.
http://farm5.static.flickr.com/4016/4354857091_bd3b309804_b.jpg
http://farm3.static.flickr.com/2793/4354857321_9f14b322ef_b.jpg
http://farm5.static.flickr.com/4014/4355602578_617f18fa0d_b.jpg
http://farm5.static.flickr.com/4041/4354856911_c696386b17_b.jpg