With Hondas....Helix was last scooter you could change belt without taking a clutch/pulley off (Reflex= no and of course SilverWing No==equals not handy, I had 2 new SilverWing for more than 90,000 miles) Helix great, belt could come off/on just by squeezing rear clutch=good design in my book....had 4 new ones, total of 175,000 miles.
For my new XTown 300i I have no idea if pulleys/clutch has to come off.....think I will look in shop manual.
Something I have learned from over 400,000 rubber band drive scooters----always change belts at makers recommended miles, replace with OEM belt.I always carry spare belt as dealers do no usually have them in stock. To me walking sucks and delays can get expensive. My record, just one broken belt in over 400,000 miles---Helix in VA, belt was near end of service life, I had spare.
Note: on SilverWings they are now old and with many of them, who knows their Maint.. history?