ICS 680ES Manual De Mantenimiento página 75

680ES SERVICE MANUAL
Power Cutter Will Not Start
CHECK
Does the engine
NO
crank?
YES
NO
Is there spark?
YES
Is the spark plug
NO
firing
properly?
YES
Insure cylinder
compression is
NO
above
125 psi
YES
NO
Is the fuel fresh?
YES
Is the fuel
NO
reaching the
carburetor?
YES
Is too much fuel
YES
reaching the
carburetor?
NO
Is the flywheel
YES
key sheared?
© 2020 ICS- Blount Inc Specifications and pricing are subject to change without notice. P/N 598000 REV01162020
POSSIBLE CAUSE
• Dirty or broken recoil
starter.
• Internal damage.
• The ignition switch is
"OFF".
• Faulty ignition ground.
• Faulty spark plug lead.
• Faulty ignition coil.
• Plug is soaked with fuel.
• The plug is fouled or
gapped improperly.
• Plug is internally faulty or
the wrong type.
• Loose spark plug.
• If below 125 psi – excess
wear on the piston,
cylinder, rings and/or
improper fuel mixture.
• Fuel is old, varnished, or
contaminated.
• Clogged fuel filter.
• Damaged fuel line.
• Damaged pulse tube.
• Plugged fuel tank
breather.
• Carburetor is tuned
incorrectly.
• Plugged fuel tank
breather.
• Loose flywheel.
25. DIAGRAMS
REPAIR
• Clean, rebuild or replace the
recoil starter.
• Inspect for internal damage such
as seized piston.
• Move switch to "ON" and re-test.
• Tighten connections or replace
ground wire.
• Repair or replace spark plug lead.
• Replace ignition coil.
• Dry plug, expel excess fuel from
cylinder and crankcase.
• Clean and re-gap the plug to
0.020 inch (0.05 mm).
• Replace with the correct plug –
see Spark Plug Reference Guide.
• Tighten plug and re-test.
• Replace piston and cylinder.
• Ensure correct fuel/oil mixture
(50:1)
• Empty tank and re-fill with fresh
fuel of the correct mixture (50:1)
• Replace fuel filter.
• Replace fuel line.
• Replace pulse tube.
• Repair or replace fuel tank
breather.
• Refer to Carburetor Tuning
section.
• Repair or replace fuel tank
breather.
• Replace key and reinstall
flywheel.
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