-
If you are riding in this hot weather you might be glazing the clutch a bit if it's slipping. I have a similar situation with mine, if I slip the clutch I'll end up with it slipping right through the gears because I'm heating up the clutch plates by slipping it in the first place. So after that every gear slips a bit. Next junction or stop and it pulls away fine because the clutch has reached a more normal temp.
As Jung points out it could be slipping because of cable adjustment. It's still the same principal, you might need new clutch plates but it could just be the heat from slipping is making the situation worse. When you can't fix it with adjustment you need to get on and change the clutch plates asap. Not a difficult job on most bikes except you need to drop the oil.
Keep meaning to post about this,
My wee xv250 is possibly having some gearbox woes and I wonder if anyone will recognise it as being symptomatic of anything...
When I'm accelerating and shifting up its as though the gear doesn't change or doesn't engage at first.
It's not graunchy or hitting a false neutral or anything, more like the revs will go back up to where they were in the previous gear, then if I roll off and back on the throttle they'll be lower, like its clicked into the new gear. I don't think there's much a klunk of it dropping into gear or anything.
I tried holding the gear lever up as I roll back on the throttle but didn't seem to make any/much difference. Being a bit slower getting back on it after the gear change seems to sort it out but where's the fun in that!
I did wonder if I'd maybe put too much oil in when I changed it recently, I keep forgetting to take some out.