- 17 -
Yes
No
Spark plug electrode is moist
Spark plug electrode is dry
Check if there is oil leaking from
carburetor
Instill small amount of fuel into the cylinder to
have an experimental starting
1.
Check if there is gap
between the carburetor float
needle valve and valve seat
because of other materials
2. Check if the conical
surface of the carburetor
float needle valve is worn
into step shape
3. Check if the carburetor
float breaks
4. Check if the carburetor
float is too low
Check if the air
cleaner blocks
The engine stops after
running a very short time
Work continuously after
starting
The carburetor inside
blocks or the float is
too high
Carburetor
starting
device (starting richer
system) fails
1.
Check if there is gas leaking
in external connections of the
engine
2.
Check if the piston ring sticks
in ring groove or insufficient
elasticity
3.
Check the wearability of
piston ring and cylinder
1. Check if the venthole of
fuel tank cover blocks
2. Check if the fuel filter and
fuel cock block
3. Check if the fuel cock
works well
4. Check if the carburetor inlet
port blocks
5. Check if the carburetor
floater is too high
Remove
the
spark plug to
test
Summary of Contents for F-ACT EVO
Page 16: ...15 QJ50T 21T...
Page 109: ...108 Check and maintenance of the engine...
Page 136: ...135...
Page 142: ...141 Function it is a transmission torque and could determine the final output torque and speed...
Page 156: ...155...
