Modern Vespa

I still don't understand how to open Vespa hose clamp.
I tried with a screwdriver but it was dangerous, I finish with a pair of wire cutters but it was not easy.

How to open safely (for me and for the vespa) this hose clamp ?

From the forum it looks like I am not the only one, and there is no miracle solution.

The one on the rocker cover (and others?) is a single use crimped band.
It's dumb from our perspective.

https://www.scooterwest.com/oem-style-stepless-hose-clamp.html

A good pair of 10" dykes work good to cut clamp at the middle and twist apart but I try lifting the tab with a small screwdriver first

when replacing use stainless steel clamps that don't have holes in them. see picture at https://modernvespa.com/forum/post2539015#2539015

Insert and twist. $2 at Harbor Freight.

These clamps are not reuseable. Most people replace them with stainless steel hose clamps.

The original style is called an Oetiker clamp and you can purchase them on Amazon.

When I re-built (mostly BMW) cars I often reused those clamps. They pop loose via a strategically placed small thin bladed screwdriver and can be re-clamped as well. Unless they were badly bent and/or hose damaged anyway, I didn't cut them.
I'm not recommending it- just saying I did it often. Saved money and doable. In my parts cabinet I keep the re-usables design ones and do replace the others at times. Matters the location and access.

Me cut. Me replace. Me no care.

I use this set https://nl.aliexpress.com/item/32999637873.html?spm=a2g0o.productlist.main.27.1d93288dJwXY6L&algo_pvid=3d4a8c8c-095a-4040-afce-6c4b51ee1ded&algo_exp_id=3d4a8c8c-095a-4040-afce-6c4b51ee1ded-13&pdp_ext_f=%7B%22sku_id%22%3A%2212000029362465146%22%7D&pdp_npi=3%40dis%21USD%2120.23%2112.18%21%21%21%21%21%40214528be16787783839587055d070d%2112000029362465146%21sea%21CZ%210&curPageLogUid=57GA3XAbxpf3
Pliers are designed both for cutting old clamp and tightening new ones