how do you rebuild a Roketta 150cc GY6 engine?
Replace your CDI
check partsforscooters.com
to the air box
valve adjustment. .03 intake .04 exhaust.
.03 intake .04 exhaust
If you are asking about compression numbers, they should be around 150psi.
I got a DF50sst and it’s a 20mm
how much is the price of koso racing pulley for yamaha mio?
on 5occ - 150cc gy6 qmb or qmj engines the rev limiter is part of the cdi programming.
go to scootdawg.com they have a free 200 page download for gy6 scooters. most 50cc are gyd or 139qmb.
Isolate the wire going into kill switch [wrap some tape round it] so it cannot be earthed.