Cobra CX50SR - Troubleshooting

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Troubleshooting
1) Engine operates erratically
a) Carburetor top is installed backwards
b) The carburetor slide indexing pin is missing
c) A carburetor vent elbow is plugged or has fallen out
d) Faulty stator
e) An air leak
i) Base gasket
ii) Intake / reed gaskets
iii) Crank seals
iv) Crank case gasket
2) Engine is down on power
a) Clutch engagement is not set properly
b) Jetting is incorrect
c) Silencer needs repacked
d) Exhaust pipe
i) Has excess carbon buildup
ii) Has large dent in it
e) Compression is low
i) Piston
ii) Rings
f) Reeds are damaged
g) Ignition timing is incorrect
h) Stator needs replaced
3) Engine is excessively loud
a) Silencer needs repacking
4) Engine ‘blubbers’ at high RPMs
a) Jetting too rich
b) Stator needs replaced
5) Engine won’t start
a) Fuel
i) None in tank