Honda EU65is Service Manual page 79

cap.02 EU65is 6500is (Eu).qxd 07.12.17 4:25 PM ページ2-32
From P. 2-31
Remove the spark plug and check for wet or
fouled electrodes.
Perform the spark test (P. 2-38).
Good spark
Check whether the auto choke shaft has
closed with the ignition switch turned ON.
The choke valve will be closed initially, then
it will be adjusted automatically according
to the temperature of the cylinder head
when the ignition switch is turned ON.
CHOKE SHAFT
Check the choke control motor (P. 4-10).
Check the harness connecting the choke
control motor and GCU for open or short
circuit and for proper connection.
Wire harness check points
ENGINE
W Y R Bu
WIRE
HARNESS
CONTROL
WIRE
HARNESS
Viewed from terminal side
Normal
No good
Normal
CHOKE
CONTROL
MOTOR
Y: YELLOW
Bu: BLUE
R: RED
W: WHITE
Y Bu R W
GCU
Wet • Clean the electrodes and restart.
• If flooding is severe, check the carburetor
float valve (P. 4-7).
Dry Check for restriction in the carburetor port,
nozzle, and jet.
No spark or
Perform
weak spark
troubleshooting (P. 2-35).
Good
Abnormal Replace the choke control motor (P. 4-6).
Abnormal Replace or repair the engine wire harness
and/or control wire harness.
Abnormal Turn the ignition switch OFF and then
restart the engine and check the error code.
If the same error occurs, replace the GCU (P.
6-6).
"No Spark at Spark Plug"
To P. 2-33
2-32