hey. thanks but yeh, mines the vertical one m8. this is identical my engine in every aspect. just cant find a pdf anywhere. lol

hi all. im dan. im new to this site. i live in stoke on trent and have the above bike as a learner. i know its not the best but it does me. well it did. After replacing my clutch i now have another problem. My bike sounds ridiculously loud and i may have lost power or it may be that because its so loud i daren't pull the throttle. A friend thinks it may be something with the piston as it sounds like its coming from there he reckons.

i have the exact same engine in the shed. as a newbie would i be ok to do the job myself. eg. strip the engine and fault find? im looking for a pdf manual for my bike to help me. should i attempt this? im fairly bright and i have a phone to take photo's so i know how bits go back together. what tools would i need? do i need to strip everything to get to the piston?

any advice would be very appreciated.