I would say that it is the pawl spring (called a change lever spring) stuck and not returning the pawl to engage the cam (gear change drum).
Drain the oil, and look under the oil sight glass cover for this mechanism.
The engine does not need to be removed, but it will be a tight fit.
If it is the pawl or spring. It is a cheap and easy fix.
Your bike does have the heavier rod. It was changed in '91.
'91 VN750 - Cosmic Splendor/Candy Wine
Done: Coastered, .020 ign., Iridiums, VM
Plexistar II, MCCT's, Relocated MOSFET
Will Do: Horns, Shave(maybe)
Last edited by ZCraggRatt; 04-18-2012 at 12:51 PM.