Raymarine st6002 auto pilot

aw6686

.
Jun 12, 2014
14
Hunter 33.5 Ned Dimes Marina
My clutch is slipping. Have read the manual and made adjustments by loosening the screw and turning the grey knob 4 clicks. Did this 3 times and clutch still pops out.
Looks like I need to replace the belt.
Any instructions on how to do that would be greatly appreciated.
Thanks much!