Originally Posted by vodkamune
how much should i bleed it for?
A quick and easy bleed would be to take the appropriate sized box-end wrench (8mm? 10mm?) and place it on the bleed nipple on the clutch slave cylinder. Put a rag over the wrench and bleed nipple. Pump the clutch lever until it its as solid feeling as it gets, then, while holding the lever to the bar, open the bleed screw with the wrench. When the bleed is complete...maybe one second...close the bleed screw and then release the clutch lever slowly. Repeat this action twice more.
This will bleed minimal fluid and release any minor amounts of trapped air at the slave.
After that you can check the clutch action.
Dons is right, however...you should renew the clutch fluid at least once a year, same as brake fluid, by doing a complete system bleed/refill.