@ Is it sticking so badly that you can’t free it off with the kickstart, while holding the handlebar lever in? @
Kinders put it in 2nd , engine off . Maybe take up the freeplay in the cable a notch temporarilly , and rock back n fwd , lever in . As in use the rear wwheel to turn the sucker free .
Obviously the adjustment starts at the pushrod adjuster and checking lever arm posn , detrach cable & check action . Oiling a nylon lined ones a no no . Maybe silicon spray .
Possably if YOU HAVE been sitting idling , clutch in , its blued / softened / shortened the clutch push rod . Most use a ball bearing ball at the pushrod adjuster end , for low friction .
So if your in there watch for that & check the rod lengths correted . Heated and softened the end can go . Or burr over . Creating more awwardness .
Dump the old ones in carbon tetrachloride .
Knactually , check & remove the DRUM ,
IF
The transverse slots are notchy / burred .
Get a appropriate file and cllean up the grooves . A bit degenerate is ok , but ribbed to blazes gets all sorts of hang ups .
The tangs on the plates can burr too . Hammer & dress . Likely an hours work . But the center & drum need a good look .
helps .
Check the shock absorber action while youre there . Hub off , lap it to shaft with fine grinding paste . ON THE TAPER . or use blue to check 100 % seating .
Clean freds all and two drops of Red Loctite on the shaft / nut . One 1/2 blobs each . AAdequate not excessive or the nut'll be stuck next time .
The Half Moon Key , if a real very engineers supply ones better'n a lawn mower one . Theyre a weak point for agro clutchless downshifts , shear .
So a spare one for the tool kits notta bad idea .
Set all spring adjusters full in to start . There were nice long smaller Dia spring wire PRE UNIT ones thatre better , CHeck if it frees ?
maybe bottomed out . undo say 2 1/2 turns ( The Pre Units had FOUR Springs !
) then dither to level cover cluth released . Check. kick thru. repeat . get it spining even & flat .
Check the disengagement point and take up point , while glareing sternly at the cover and clutch action .
Like a Rover P4 hand brake . correct sequence is mandatory . start at the far end away . The screw adj to pushrod then check Ea step through . Should be lightish and free action .
no catching or drag , from poor cable runs , kinks , or trapped - water ingress , If definately no nylon covered cable or lined outer , Drench free hung cable . If overnight tape bottom
and deluge it . Drain off next day or 1/2 hr before fitting . Did someone mention paper towels , newspaper on the floor & drip trays .
Commando & tall gearing / hill starts / crawling on wet lawns or clay farm tracks , the gunge debri can gettem sticking dragging .
Cure is clean them and desist . Any idiot knows to put it in neutral at the lights , untill the opposings orange , so you can beat them off the line .