pes devra être contrôléFull set ready to assemble on your engine
The YX-153FMI is the version that allows to start on any gear so with the clutch cable at the top on the rear of the right cover
This cylinder head is also suitable for 125 Jialing 156FMI.
The combustion chamber is compact and this cylinder head is normally match with a piston whose head is down  (reference 1121
)
Valve clearance to control, 0.05 to 0.07 both side