Did mine by pulling it back approx 12mm and put Optimate paste on splines with a toothbrush (I'd recommend using the wife's btw sticky stuff etc )......anyways, if your clutch is THAT stiff and has been for a while....it won't take much longer to completely remove the gearbox ( obviously clutch left untouched so gearbox splines will go back on/in very easily ) and give the splines a proper clean and lube.
Have a look at Kenny's reply on a thread of mine:
The whole thread is at:
http://www.ukgser.com/forums/showthread.php/382438-Stiff-clutch?highlight=clutch+splines
You can also use Honda Moly 60 as the lubricant.
...... if I remember correctly it did take some time
Half an hour to get a box out.
I've always taken the swing arm out.
Hi Cookie
how do you ensure you put it back with the same gaps either side, or indeed "centralising" the swing arm - I measured the gap on the RHS with "feeler gauges" before and then adjusted to keep the same gap when putting all back together
I measure with a vernier calliper between frame and swing arm, and then fiddle with the pivot bolts til it's equal (+/- 0.5mm IIRC).
Done two bikes in the last few weeks and takes about 10 mins.