Cobra Electronics King 2003 - Manual (Page 51)

50
Troubleshooting
1) Engine not behaving properly
a) Carburetor top is installed backwards (happens a lot)
b) The carburetor slide indexing pin is missing
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
3) Engine is excessively loud
a) Silencer needs repacking
4) Engine ‘blubbers’ at high RPMs
a) Jetting too rich
5) Engine won’t start
a) Fuel
i) None in tank
ii) Is sour or bad
b) Carburetor is dirty
c) Ignition
i) Spark plug fouled
ii) Spark plug cap off
iii) Engine Shut-off ‘kill’ switch is shorted
iv) Bad electrical ground
v) Stator winding damaged
d) Exhaust is plugged
6) Engine won’t idle
a) Idle knob needs adjusted
b) Carburetor jets are dirty