the selector drum has a spring loaded roller type locator to locate the gear drum in the right position my guess is the spring has snapped and alowing the drum to move out of line with the selector shaft https://www.fowlersparts.co.uk/parts/4162064/fzs600-fazer-5dm4-1999-070-a/shift-cam-fork13 14 15 are the parts that hold the selector drum in place in each gear
Sorry, didn't read your first post carefully enough. You're correct, that wouldn't be so likely to affect higher gears, first to second is the one that shows the issue first because the neutral detent requires the drum to be rotated further than between the other gears.If the clutch was dragging you'd notice difficulty getting between 1st and neutral, yet it's odd that replacing the clutch seemed to fix it temporarily.It might be worth taking the clutch cover off and taking a closer look and see if you can spot what is happening.By side to side play in the gear shaft do you mean axial? A bit of radial slop is normal, but if the shaft is able to move too far to the left side of the engine it could result in the same collision with the pins of the selector drum that I had. And that might account for it working some of the time and not others.Thinking about it, a suitable washer on the shaft to keep it a millimetre further away would have fixed my issue a lot easier.
It sounds like the detent spring has broken, remove the clutch cover and you should be able to see, unfortunately replacing it means removing the clutch basket to get to it. See pic
With the clutch is the opposite! I pop it in accidentally now all the time without even engaging the clutch. A slight bump in the road will do that!
Quote from: 10kovako on 12 May 2019, 07:58:17 pmWith the clutch is the opposite! I pop it in accidentally now all the time without even engaging the clutch. A slight bump in the road will do that!OK, I'm in agreement with everyone saying the detent spring now.