bike not running

[kidxf168]

si i bought a thumpstaroff a guy for 100 bucks it doesnt go its like theres no compression theres spark and theres fuel got it to start twice it was extremely loud and it stunk and didnt start again

bent valves?
piston and rings?
timing chain out?

anyone whoe might know whats wrong?

 

[sean01]

first thing id be doing is adjusting the valve clearance mate... .003 thou on inlet and .004 thou on exhaust.
http://www.miniriders.com.au/motor-tutorials/24965-how-set-valve-clearances-horizontal-engines.html

also check that the clutch isnt adjusted up to far as im guessing this is a start in neutral only engine (clutch lever on the front of the clutch cover).
there should be about 3mm play in the cable at both ends

 

[kidxf168]

yeah adjusted valves no luck will have a go with the cable thanks