Hi,
I've got a giovanni and it runs great, the neighbour has one too, his ran good for months, but now when it gets really hot, it loses all power and won't pull itself, kinda of bogs/misses and tries to move. I thought maybe it was the clutch burnt out, but pulled it apart today, and it looks just fine. Next thought was maybe the valves were a little tight and when she gets hot its hangin one partially open. Does anyone know the valve specs for these little engines? Also does anyone know what the replacement NGK sparkplug would be for one of these?

Thanks, Crazeejames

 

The most common problem with these 50cc quads is valve adjustments. I think the intake is .006 and exhaust is .008. Thats what I have been told for when I hae to do mine.