KEEWAY F-ACT EVO - Failure diagnosis procedure of engine’s excessive fuel consumption

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Failure diagnosis procedure of engine’s excessive fuel consumption
Excessive fuel consumption of engine
Check if the operation method is right
Prop up the main jiffy stand and revolve wheel by hand
1. Check if the motorcycle is run
overloaded, or run not at
economical speed or run at low
gear
2. Check if the gasoline number is
right
Wheels revolve difficultly
Wheels revolve smoothly
1. Check if the brake
drags
2. Check if the wheel
bearing is overused
3. Check if the loading
of hub’s central spacer
is neglected or shorter
Check the tire pressure
Tire pressure is too low
Tire pressure is normal
To charge as required
Check there is fuel leaking in
the fuel tank, fuel cock, fuel
pipe and carburetor
To exclude in accordance with the actual situation
Check the mixture ratio of the
combustible gas mixture
The mixture ratio of the combustible
gas mixture is normal
Combustible gas mixture is too strong
Combustible gas mixture is too weak
Check if the engine idle speed is too high
1. Check if the air cleaner
blocks
2. Check if the carburetor
float is too low
3. Check if the main jet of
carburetor is too large
1. Check if the inside of
carburetor blocks
2. Check if the carburetor
float is too high
Check and adjust the
carburetor
Use ignition timing
light to test whether
engine ignition is
timing
Check if the transmission
belt of clutch slips
Check ignition system