Fuel System
5-2
Troubleshooting
Unable to start the engine
● No fuel in the tank.
● Fuel cannot be supplied.
● Fuel excessively absorbed into the cylinder.
● Air cleaner clogged.
● No spark from plugs.
Unstable idling, unsatisfactory rotation
● Unsatisfactory idling adjustment.
● Mixture too lean or rich
● Air cleaner clogged.
● Secondary air absorbed into the intake system.
● Fuel system clogged.
Mixture too lean
● Carburetor jets clogged.
● Fuel tank cap air hole clogged.
● Fuel strainer screen clogged.
● Fuel tube kinked, pressed or clogged.
● Float valve malfunction.
● Oil level too low.
Mixture too rich
● Float valve malfunction.
● Oil level too high.
● Air jets clogged.
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