I think the service guys hate to have to take off all of the fragile Tupperware when major service is due, even though they get paid to do so. I hate it myself and I have a real, 7ft tall, hydraulic lift that makes servicing things easy. CVT's are still foreign to most people.
http://en.wikipedia.org/wiki/Continuously_variable_transmissionThese CVT's are in many modern autos now and are very problematic and unreliable and difficult for mechanics that are used to manual and 'normal' torque convertor type automatics.
These cycle and scooter mfg's design things so maintenance and repairs are almost impossible or very difficult for the owner:
Replacing the air filter on my 2012 Goldwing is time consuming and difficult, normally taking 3+ hours to do if you have done it before--the first time may be an all day task.
My Harley's air filters could be changed by a blind man in 10 minutes including break time.
Why do they hide spark plugs now? Why do they make valve adjustments so difficult: Screw and locknut, shim under bucket, shim over bucket, buckets that must be replaced in different sizes and then there is the Desmo that most folks have no idea about.
My first new Goldwing, a 1997 Aspencade had hydraulic lifters!!!! My new 1800 has adjustable lifters (34,000 mile intervals) but my Harleys were all hydraulic, plugs in the open as well as the air filter and oil filter!
Some of these scooters basically have to be stripped bare to do valve adjustments for instance and some must have the dual overhead cams removed to make adjustments. No wonder people don't want to work on them. The Vespa has to have the entire engine/ rear swingarm assembly detached and let down to do the valves. Stupid!
Sorry for the rant.
Sam:)