Honda GX240RT2 Service And Repair Manual page 315

TROUBLESHOOTING
BEFORE TROUBLESHOOTING
TROUBLESHOOTING
• Use a known-good battery for troubleshooting.
• Check that the connectors are connected securely.
• Check for sufficient fresh fuel in the fuel tank.
• Read the circuit tester's operation instructions carefully, and observe the instructions during inspection.
• Disconnect the battery cable before continuity inspection.
TROUBLESHOOTING
(*) Refer to page of base shop manual (GX240·GX270·GX340·GX390)
(**) Refer to page of base shop manual (iGX270UT2·iGX390T2/UT2 Supplement Y)
ENGINE SPEED DOES NOT INCREASE OR STABILIZE (QZAV type)
Check whether the oil level indicator is ON.
OFF
Check the external connected control and wire harness
for failure or open circuit.
Normal
Check the engine wire harness connecting the ECM
and each control for continuity.
P Lg
Lb
ENGINE WIRE HARNESS
Continuity
Check whether the engine retains 1,400 min
constantly when the external connected control is
operated.
Not constant
Remove the air cleaner elbow (page 6-5*) and check
whether the choke valve is closed when turning on
the starter motor or pulling the recoil starter.
4-2
gx240ut2_gx270ut2_gx340ut2_gx390ut2
Abnormal
No continuity
W/Bl Y/Bl
(rpm)
-1
Constant
Abnormal
ON
Add the recommended engine oil (page 3-3*).
Replace the external control and/or wire harness.
Replace the engine wire harness (page 11-7**).
Replace the ECM (page 6-4**).
Check the control gear box (page 6-5**).