Before you start you need to check the end play on the clutch cable. This should be anywhere from 1/8th inch to 3/16th inch. This measuement is is taken between the clutch perch and the cable. You have to grab the cable and gently pull it to take the measuement. If this measurment is less than or more than the measures above you will need to re-adjust your clutch cable. On your clutch cable you will see a rubber boot. You have to slide the boot up or down the cable to get to the adjuster. Grab two wrenches and adjust as necessary.
I would highly recommend that you go out and purchase a service manual for your bike especially if your gonna do some of your own wrenching.