125-200cc gear selector constantly loosening

anyone else ever have this trouble with 125's? iv heard of it on bigger huskies. i get 2 rides out and have to tighten my selector up. its only about 8 weeks old and the splines are good on both the lever and the selector shaft. iv loctite'd the bolt and shaft and left it to dry over night and it still does it. this selector has done it since new. anyone have any fix's for it ? or do i just change to an rfx lever

I replace the bolt with one long enough to put a nylock nut on the end. A little trickier to tighten but stays put now.'

out to the bucket of mixed nuts and bolts for a look

Flat needle file and file down the gap to open it and allow greater clamping....second the nylock solution as well but also retap the thread to clean them up.

Just using a longer bolt, no nut or loctite, did it for me. May have to file the gap next though, but about 2 months of no prob's.

outer part of the teeth started to wear out the weekend so im getting a new lever and going to do the above to stop it wearing out. cheers for the help gents

I put a steel lever on mine and it stays tight much better than the stock aluminum one (which eventually stripped out during an enduro from working loose)

These splines must be kept spotlessly clean and snug. Dirt /grit works its way in, because the lever's loose, then it gets tightened with the dirt still trapped. The grit then wears the spline and the lever constantly needs tightening. Once this is happening a new lever is the only true fix. Just make sure there is NO grit on the spline when the new lever is fitted or the same thing will happen again.

On my 250 I found that the inner side of the shifter was making contact with a case bolt. I file down the part of the shifter which makes contact with the bolt and it stays tight much better.

I also loctite the shifter to the spline.

cheers guys. local dealer looking for a steel one. new alloy one in at the weekend. iv two 2 day events coming up so need it good for then. one event is 150kms long

The problem with the stock steel shifter is it bends to easily in my experience. Just shifting bends mine. Only good part is it's easy to bend back.
I recently ordered an MSR Al shifter off ebay, but haven't used it yet.
http://www.ebay.com/itm/371361446999
Currently have one of the RFX off ebay which needed the longer screw to not loosen and fall off.

i was gonna get the rfx one or an md racing ine but was unsure of quality. if you put yous on at somestage any chance of letting me know what its like

Here's a recent thread with lots about the RFX
http://www.cafehusky.com/threads/nice-e-bay-shifter-for-wr300-or-250.79111/#post-518313
I got the MSR as a spare and because the price was right.

A longer bolt, and safety wire the bolt head to the nut.