Clogged oil filter Too high or too low mixed gas concentration
Clogged oil pipe Secondary air sucked by the intake system
Sticky needle value Improper idle adjustment
Improper oil level adjustment Improper oil level adjustment
Clogged idle system or enrich valve
Too much fuel in engine Too low mixed gas concentration
Oil outflow Clogged oil nozzle
Secondary air sucked by fuel system Clogged needle valve
Degraded fuel Too low oil level
Improper work of enrich valve Clogged fuel system
Clogged idle system or choke system Improper work of plunger
Secondary air sucked by the intake system
Too high mixed gas concentration Intermittent spark while acceleration
Improper work of enrich valve Too low mixed gas concentration
Improper work of needle valve
Too high oil level
Oil outflow from carburetor
Clogged airway
Dirty air cleaner
11.3 Removal of Carburetor
11.3.1 Removal
Remove the locknut between carburetor and bakelite washer.
Remove carburetor assembly.
11.3.2 Disassemble Carburetor
Screw off upper cover and remove sealing ring, plunger spring and plunger assembly on it.
Screw off lower housing connecting screw and remove lower housing assembly and sealing ring.
Remove float assembly, float pin and needle valve core.
Remove idle jet, main jet, main nozzle and main foam pipe.
Remove mixture screw, mixture screw spring, mixture screw washer and mixture screw sealing ring.
Remove plunger adjusting screw and plunger adjusting screw spring.
For details, refer to breakdown diagram in P125.
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