Carburetor „beat´s back“
a) Obstructed fuel flow or dirty fuel filter, clogged fuel lines or dirty carburetor bores.
b) Slanting carburetor.
c) Loose carburetor.
d) Carburetor´s tightening screws loose.
e) Defective engine gasket.
f) Missing air filter
g) Wrong carburetor setting, jet needle too low or fell into needle jet entirely due to
broken clamping yoke.
h) Wrong ignition timing.
i) Old or defctive sparkplug, wrong electrode distance.
k) Breaker lever hangs or lifts off too far.
l) Points burned
m) Piston rings burned into the grooves (bad compression).
4.35 Engine stalls abruptly
a) Empty gas tank (Noticeble „stuttering“ of the engine prior to stalling).
b) Clogged tank, fuel lines or dirty carburetor.
c) Ignition cable loose or detached.
d) Defective sparkplug.
e) Broken breaker lever or fallen off contact material.
f) Defective condensor.
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General