14
English
TROUBLESHOOTING
Use the inspections in the table below if the tool does not operate
normally. If this does not remedy the problem, consult your dealer
or the Hitachi Authorized Service Center.
Condition
Cause
Remedy
Engine does not start
Fuel system
Fuel tank is empty or fuel level is low
Fill the fuel tank with the correct fuel mix (25:1-50:1)
Fuel tank contains old fuel (offensive odor)
Replace with new fuel
Too much fuel is absorbed and spark plug is
wet
1. Disconnect the spark plug and allow to dry
2. Pull the starter handle 5 or 6 times to remove the
surplus fuel
3. Attach the spark plug
4. Set the choke lever to RUN position and pull the
starter handle
Fuel
fi
lter is clogged with dirt
Clean the fuel
fi
lter
Fuel pipe is bent or disconnected
Ensure that the fuel
fl
ows smoothly
Carburetor malfunction
Contact Hitachi Authorized Service Centers
Electrical
system
Stop switch lead has short-circuited
Contact Hitachi Authorized Service Centers
Spark plug is dirty
Replace or clean the spark plug
Electrode gap is too big
Adjust the gap to 0.6mm
Poor connection between high tension cable
and spark plug
Reconnect
Electrical system malfunction
Contact Hitachi Authorized Service Centers
Other
Muf
fl
er exhaust port is clogged with carbon
Contact Hitachi Authorized Service Centers for
repair
Engine starts but cuts
out straightaway
Engine is apt to cut
out
Fuel system
Fuel tank is empty or fuel level is low
Fill the fuel tank with the correct fuel mix (25:1-50:1)
Fuel tank contains old fuel (offensive odor)
Replace with new fuel
Two-cycle oil has not been added
Contact Hitachi Authorized Service Centers
Choke lever is in START position
Set the choke lever to RUN position
Air has got into fuel system
Reconnect the fuel pipe or joint
Carburetor malfunction
Contact Hitachi Authorized Service Centers
Electrical
system
Ignition failure
Spark plug failure
Replace with new spark plug
Electrical system failure
Contact Hitachi Authorized Service Centers
Other
Engine overheating
Wrong spark plug model
Replace with designated part
See “SPECIFICATIONS”
Dirty air cleaner
Clean
Carbon clogging (muf
fl
er exhaust port)
Clean
Insuf
fi
cient compression (piston, piston ring,
cylinder)
Contact Hitachi Authorized Service Centers
Abnormal vibration
Cutting attachment is not properly installed
See “Installation of cutting attachment”
Handle, handle bracket or other fastening part
is loose
Check and tighten
Blade is bent or damaged
Replace with new blade
Grass is wrapped round gear case
Remove grass
Engine is running but blade does not
move
Movement is poor
Grass is wrapped round gear case
Remove grass and dirt
Engine does not stop
Stop switch failure
Set the choke lever to START position to stop the
engine
Cease use immediately and contact Hitachi
Authorized Service Centers
Engine stops when throttle is closed
Idle speed is too low
Contact Hitachi Authorized Service Centers
Blade continues rotating when throttle
is closed
Idle speed is too high
Throttle wire is too taut
Contact Hitachi Authorized Service Centers
000Book̲CG40EAS̲EE.indb 14
000Book̲CG40EAS̲EE.indb 14
2014/07/01 9:30:08
2014/07/01 9:30:08