Pops out of 3rd

[glgrumpy 35]

Commado 800 with just 4spd axle. 3rd gear was blocked off with plate. Removed it and tried a drive. No noise, but pops out right away, unless I hold lever over. What might I be looking at to fix? Be splitting then? Think just a bent shift fork? Are there any slugs/springs to hold detents to check first?

[Coadster32 793]

Most likely a rounded out gear engagement from past grindings. Third gear has the least engagement by design.

[TT-(Moderator) 1,145]

A little reading material courtesy of the search box up there in the top right corner:

[meadowfield 2,595]

Third gear sucks on some old transmissions - 50/50 abuse, ill maintenance.... Easiest fix is to drop an 8 speed in, providing you have the hubs and are prepared to maybe have to swap a pulley/belt.

Unless you can easily lay your hands on a good set of gears and are confident to rebuild....

Mark