1) Check the clutch cable at both ends to see if it's snapped, out of adjustment, or another problem with it.
2) Check your clutch assembly. When you take out the clutch pack (fiber and metal plates) take them all out in sequence and do not mix up the order they came out. You'll need a very flat surface to check for warpage or if they are out of spec (thickness).
3) You could've snapped or bent the shift shaft. This is the shaft the countershaft (front, smaller) final drive sprocket sits on.
4) You could have a bent shift fork.
Get a proper factory manual, and start with the easiest stuff first by checking the clutch cable, and then moving on to other items in sequence, so you don't unnecessarily tear into the engine if not needed.
This isn't rocket science. If I can learn to fix a bike, anyone can!
Dec 09, 2011
Gear oil by: Gypsy Spirit
Hi Patty ...
You don't say specifically what kind of bike you have, though I am presuming some kind of Harley from your heading. When is the last time your gear box oil (separate from your engine oil) was changed?
I came up on Hondas, so it was a surprize to me when I got my Sportster to learn that there were two oils that require reqular maintenance!
I hope the answer to your question is that simple. Good Luck!