clutch

does it have any tention in it like when you pull it the clutch in is it all floppy or does it have tention and also check your oil theres a lil window to check you oil levels
 
If it jerks forward when you shift into first, it is not disengageing. If it fails to move after you put it in gear, it is not ENGAGEING.

If it has been a while since you rode the plates may be stuck. If it's now COLD where you live the oil may be too thick OR you should warm it up more. The cylinder should be warm almost hot to bare hand especially when it's Kold out. Also, while it's warming up work the clutch lever in and out, many many times if you have to.
 
when was the last time you chnaged your clutch ... you can also adjust the clutch by taking the clutch cover off and messing with the screw on the clutch basket
 
and its a 94 ?? you might wanna take that clutch cover off and take a look at that clutch and play with the screw idk maybe someone else will chime in