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TROUBLESHOOTING
Faults
Engine has no idle.
Engine stalls or is popping into the
carburetor.
Engine overheats.
Engine has too little power.
Possible cause
Idling jet blocked
Adjusting screws on carburetor dis-
torted
Spark plug defective
Ignition system defective
Lack of fuel
Engine takes in bad air
Loose contact or oxidized connector
Too little coolant in cooling system
Radiator fins very dirty
Foam formation in cooling system
Bent radiator hose
Thermostat defective
Defect in radiator fan system
Fuel feed interrupted
Action
–
Clean carburetor.
–
Have the carburetor adjusted.
–
Change spark plug.
–
Have ignition system checked.
–
Clean and check the fuel system and carburetor.
–
Check rubber sleeves and carburetor for tight-
ness.
–
Check electrical system.
–
Clean socket connector and treat it with contact
spray.
–
Check the cooling system for leakage.
–
Check the coolant level. (
–
Clean radiator fins.
–
Drain the coolant.
x
(
–
Fill coolant/bleed the cooling system.
(
p. 153)
–
Replace the radiator hose.
–
Have thermostat removed and checked.
Guideline
Opening temperature: 70 °C (158 °F)
–
Have the radiator fan system checked.
–
Check the tank breather.
–
Clean fuel tap.
–
Clean carburetor.
169
p. 150)
p. 151)
x
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