How can i fix my brothers japanese py90?

have u tried putting the choke on becouse its probably freezing

aaron morris
January 2009

yep sounds like a few problem

ive had trouble with vibration turning the screw, so if possible find the correct setting and somehow fix it there (special locktite or other temporary adhesive)

usually 1 1/2 turns ish anticlockwise from fully in position

or try adjusting the idle speed, could be choke ? lots of things really ,

get it started revi it up and get someone to spray carb cleaner into the carb , this should clear any crap

jase
December 2007

u need to open up ur timing screw on ur carb to let more petrol in and if that dosent solve it just kcik the sh*t out of it that usualy works 4 me lol

shaun
December 2007