Topic: cb125s not running right

[jaguar]

ok so my cb125s is not running right
i went through the carb
set the float
cleaned the jets
fresh gas
clean petcock
good points
new plug
valves adjusted.
battery has juice

i can run it all day around town fine it just will not idel at a stop
pulls well getting up to speed.
when i put it in 5th it bogs down and then dies.  even if i pull the clutch in its very hard to keep it running.
then it takes a few kicks to get it going again

i would think that its the float hight but i did that.
why only in 5th?

[333]

Two thing to check.  Did you adjust the valves when the engine was dead cold?  And could there be water in the gas?

[1974blaze]

what year is it? is it one where the ignition system requires the battery to run?
 i have the '78with that setup. the list of problems with weird issues was growing and increasingly inexplicable. i just replaced the whole system with one from a xl125 so it doesn't require the battery to run anything but the lights. ALL of the weird problems went away, with the exception of it not loving a ton of throttle off the starting line (stalls).  for simple machines these are fickle little bikes.