I have a 2008 Yamaha TW200 that is stuck between 3rd and 4th gears. The clutch works fine, but the shifter won't allow me to shift up towards neutral. This was not a gradual problem, but it just happened out of the blue. I have some ideas, but I am curious what others may think. The bike has < 500 miles on the odometer.

most 4 speed shifters from 2nd gear to third gear, go up and to the right side. The linkage may be not be lubricated and binding up with 1st and 2nd gear shifter rod.Put car up on jack stands in front, and have some one shift through the gears, and see if shift rod is binding up.It may also be bent. Put in 4th gear, and have some one down shift from 4th gear down to 3rd, and to 2nd.If not bent, keep shifting through all the gears. If rod is bent, replace. I hope the clutch is good. Dont try to bang the gears hard. Hope this helps

Does that transmission have external shift linkage? Sounds like a linkage broke or the neutral gate is way off.

That cylinder is known as the clutch slave cylinder. It should push against the clutch fork every time the clutch pedal is depressed to allow gear changes. If it doesn't, suspect a faulty slave cylinder, or clutch master cylinder.

Hi:
The shift pattern is pretty much the same on all 5 speed cars. The top row is the odd numbers, 1-3-5
the bottom row is 2-4-Reverse. The center position is neutral

Here is the key: The shifter is slightly spring-loaded to the center position. If you hold in the clutch pedal and pull the shifter to neutral, and let go of it, it will automatically be lined up in the position, that if you pushed it forward , it would go to 3rd gear, and if you pulled it back, it would go into 4th gear.
This way, to start driving, you start out in neutral, grab the shifter lightly, and push it first to the left, then forward. This is first gear, where you start out. when you want to shift to second, push in the clutch, and keeping left pressure on the shifter, pull all the way back . Here is the easy part, 2nd to 3rd. When you are ready, push in the clutch, and just push the gear shift forward , till it hits neutral, and is spring loaded to the middle. Then you just push it straight forward to 3rd, then next shift, straight back to 4th.
Last gear, 5th: push forward to the neutral row, then Push to the right till it lines up ,and forward to the 5th gear. Reverse should only be shifted into from a dead stop. Find neutral, push the shifter all the way right, then pull back towards you. Hope this helps.
Practice a bunch in the driveway!

It sounds like the shifter pawl might not be centered. This is located behind the clutch basket and is a pretty big job to get to, easy adjustment just a pain to get to. You will need a manuel to do it yourself.

just ram the shifter in your booty,.....duh