knock in pitpro 125cc engine air cooled

[blacksobe]

had a nock in motor renewed clutch nocks gone but if u kickstart for 15mins it starts but seems like no compression then turn off restart first kick fine full compression but the other day had loud sucking noise from carby filter on or off pull piston out looked fine but i aint a mechanic so i really need some help what could this be maybe rings any help appreciated greatly.

 

[Gawain]

Clutch or gearbox bearing. Look for a c90 manual, thats as close as you'l get although there are 'factory' split diagrams floating around. Id take the right side cover off and have a quick look.

 

[headsmess]

pull in the clutch and its better? me thinks you mite have broken a tooth on the countershaft... take off the clutch side cover and have a good look...

exploded diagram...credit for this goes to TheMountain though http://www.omicronmotors.com/manuals/125_engine.pdf

then flickin thru it,,, i think its for a start in gear type motor, judging by its clutch...and isnt much help. some, not much.