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Might want to recheck the gasket and also make sure nothing got down into the header pipe

Here's some pics

I was riding my scoot pretty hard yesterday on an 80 mile round trip, and halfway home my scoot started making a weird noise which sounded as if it was in the valve area. It wasn't real loud but noticeable with my helmet on . I was riding close behind a big truck so to avoid wind resistance and I was reading between 69 and 76 mph on my phones speedo app. All of a sudden the scoot died and I pulled over . As I was stopping I heard a clank for a second and then I heard the scoot ignite and blow back through the carb and airfilter followed by some smoke . I called someone to pick the scoot and myself up and take us home. I was able to turn the scoot over but u can tell it had no compression and would not ignite. I took the valve cover off and nothing looked broken but when I check the valve clearance the exhaust valve was tight . When I tried to adjust it , the valve spring just kept against the rocker arm . I took the rocker arm assembly off , the valve spring fell off and the bottom half of the valve was left in the head. The valve shaft was still attached to the spring and retainer . I'll post a pick soon .now I have to remove the head and see if the bottom of the valve did any damage to the piston or cylinder.

Your clutch pads are either not engaging the clutch bell or there is an issue inside the gearbox.

Are the rpms rising? If it is and the belt is moving up the variator and down the clutch pulley, then it means your Clutch pads are not catching on the bell .

Didn't realize how old this thread was , lol