250-500cc 2009 WR 300 Shifter hanging up in gear

Recently after plating my bike and laying out for a dual sport enduro my 2009 wr300's shifter would not return after down shifting. As in being in 5th gear down shifting to 4th and the shifter staying there. At first i thought it was the return spring. But you could shut the bike off and shift through the gears fine like it was brand new. It would even sometimes correct itself while running. A quick call to Hall's cycle was made and one of the mechanics told me that i needed to take the whole clutch/primary side of the case off and tighten an allen bolt on the shifting mechanism post. Has anyone else had this issue? If so how difficult is this fix? He said if i brought it to halls he could have it fixed in an hour but, i am 8 hours away and i am pretty confident i can tackle it. He said he bets his paycheck thats what is causing this problem. Any light on this is greatly appreciated.

That's exactly what it sounds like. I usually clean the screw and use little loc tite on it. 125's can do this as well. There is also a spring ang make sure it is tight and there is tension on it.

Had exactly the same problem. The screw that holds the selector came loose. Remove & loctite.....end of problem

Mine did the same thing at 6 hours. Here is a link with some decent instructions.

http://www.thumpertalk.com/forum/showthread.php?t=805862

Thank ou, i am going to fix her tomorrow.

It's pretty easy, just be sure to stack the clutch discs in order, and do your best not to tear the gaskets. (especially the power valve linkage cover)

How long did it take you? I wish there were a step by step with pics.

It took maybe an hour.

Done, i actually wrote down each step from disassembly to reassembly and took pics for anyone else that may need help.

Great thread, mine has been doing this also intermittently, looks like I'll be adding it to my short list of stuff to check.....

Same here. My 1-2 shifts have been sloppy for a while and sometimes it will fall out of 2nd gear and back into neutral under power.
Got 100+hrs on it and it hasn't failed me yet!

I had the same thing happen on my 02 CR 250 half way through the season. Sometimes it would shift fine and other times you would click the lever but it wouldn't register a shift. I thought the transmission was having problems so we took the whole engine apart to find that screw loose on the selector.

Let me know if i can be of any assistance.

Just thought I would add a few pictures for reference. When I did mine it was not loose nor was it real tight barley had to touch it with a allen mabey a hour on the bike

Bauten300

How did you get the shift linkage out so you can access that allen? It looks like I need the steps before these two pictures, do you have those? I need to do this on my 2012 wr300 but when I changed my clutch a few weeks back I tried to tighten the one on the left, not seeing the one behind the linkage. I remember looking at that linkage and not seeing how that came apart so I didn't try. Is it as easy as removing the allen on the left and right to access this or am I needing to do something else?