scooter engines do they all seem to use the same?  By  codeyell0 (Read 1,149 times)

this what you mean?

1. change fuel filter (and fuel lines)
2. change drive belt with Kevlar Belts (yup)
3. adjust valves (yup)
4. change CDI to deregulate rpms (maybe)
5. remove the spacer by the variator to deregulate the speed(there is no spacer now days)
6. tighten all the bolts.( you have to leave 1 loose.)
7. change the oil( it has to want to change.)

stock 50cc Cranks go about 9000 miles. then its tear down time.
Variators, clutch need maintaince.
Variator has a bronze bushing it needs to soak up oil so it will last.
Clutch has grease inside that needs to be redone bout every 3000 miles.
Belts kevlar 4000 miles+

If you mod them over rev expect a shorter tear down cycle.

Most guys around here see 1200-3000 miles on 80cc b4 it blows.
70cc's seem to blow in a year of hard riding.
50cc's don't blow up.

100cc's Ha Ha.. last a week or two.


If you want a scooter that you can run to death go Japan or Italy French German, $$

Chinese are Cheap Toys that need to be run Hard.

The best way to do these China 50cc is get a new one cheap add BBK,preformance variator and run it hard for a year. Sell it get another one do the same.