2.7 Troubleshooting
This section gives very general information regarding symptoms and possible causes. Refer to
subsequent sections regarding testing and removal and replacement of specific components and
systems. Engine overhaul is addressed in the IG6000 Engine shop manual.
a. General symptoms and possible causes
Engine does not
start or hard
starting
Fuel switch won’t operate
Inspect and replace
Trigger defective or improper air gap
Spark plug cap disconnected
Opening set of smart throttle improper In whole or semi location
Ignition winding control module defective
Engine speed
does not stabilize
Throttle control stepping motor defective
Valve clearance misadjusted Readjust
b. Hard starting or no start
Check the fuel level in the tank
Add fuel and restart the engine
↓Sufficient fuel
Check fuel switch is in ON position
Turn on it and restart the engine
Loosen the drain screw and check
whether fuel reaches bowl and whether
→abnormal
Check the timing relay for damage and fuel
system for blockage
Remove and check spark plug and check
if electrode is wet or dry
→dry
Check each carburetor hole and nozzle for
↓wet →
Clean and dry the carburetor and observe
choke action. if severe wet, check if any fuel
leakage and if the floating valve is normal.
Attach the spark plug on plug cap, ground
Perform the ignition system troubleshooting