Scooter v belts

[A500leroy]

Any knowledgeable people out there that can (simply) describe how to replace them?

[trickywoo]

Have you tried YouTube?

[A500leroy]

Mostly over the top Americans

[Simes205]

Depends on the scooter but on a big Vespa.
Case off and loosen the Variator bolt (windy gun)
Slide off belt and replace, Some shouting might be necessary.
Then put it all back.

Do the weights whilst your there.

[rodericb]

Yeah, as above. The variator is the front pulley (rear is compensator). Get something to lock the variator - you should be able to get them fairly cheap from ebay or wherever, they're often just a tooth looking thing which has two holes opposite the tooth to bolt to where the cover fastens. Otherwise it's a pain to get any torque onto the variator nut.

Pull the compensator apart with your hands and wedge something in there to keep the pulleys apart and to take tension off the belt, lock variator with your new locking tool and undo the nut, pull off the outer pulley and the belt will come straight off. You might have some washers and other bits so remember which order they go in. To go further and check the rollers (aka weights) pull the other side of the variator towards you until you can get your fingers behind it as there'll be a plate behind it which holds the rollers in. Pull all that out. Rollers should have no flat surfaces and the rolling surfaces should be free of debris (otherwise the rollers won't roll).

Reverse all that to put it all back together. When you remove your wedge from the compensator give the rear wheel a few turns so it all tensions itself.