Husqvarna SG 13 Owners Manual - Page 43

Troubleshooting, Symptom, Cause, Action

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TROUBLESHOOTING Symptom The engine will not start • User error Cause Fuel valve closed. Choke valve open. Engine switch in OFF position. Action Open the fuel valve. Close the choke with cold engine. Turn engine switch to ON. • Fuel system Fuel tank empty. Machine stored without observing proper procedure from chapter "Storage/Winter storage". Contamination, water or ice in fuel system Carburetor problems. Fill with fuel. Clean tank, sludge reservoir and empty carburetor. Fill the tank with fresh fuel. Clean tank, sludge reservoir, fuel lines and carburetor. Fill the tank with fresh fuel. Contact an authorized service workshop. • Spark plug Wrong spark plug type. Buildup on electrodes. Short circuit. Gasoline or oil on the spark plug. Replace the spark plug. Check electrode gap and clean or replace spark plug. Clean the spark plug. Air the engine out. Start with full throttle. • No spark after checking spark plug Faulty engine switch, cable or ignition. Contact an authorized service workshop. • Low compression Serious interior engine damage or faulty valves. Contact an authorized service workshop. Engine is gutless or runs unevenly • Air filter Clogged air filter. Clean or replace the air filter. • Fuel system Machine stored without observ- Clean tank, sludge reservoir and ing proper procedure from empty carburetor. chapter "Storage/Winter storage". Fill the tank with proper fuel. (Blue exhaust) (Voluminous blue-white exhaust) (Black exhaust) Tank filled with 2-cycle mixed oil. Tank filled with diesel. Choke left on. Clogged air filter. Carburetor problems Fill the tank with proper fuel. Clean tank, sludge reservoir and empty carburetor. Fill the tank with proper fuel. Open choke valve. Clean or replace the air filter. Contact an authorized service workshop. • Ignition system Wrong spark plug type. Buildup on electrodes. Short circuit. Faulty ignition unit. Replace the spark plug. Check electrode gap and clean or replace spark plug. Contact an authorized service workshop. • Low compression (possible blue exhaust) Serious interior engine damage Contact an authorized service or faulty valve. workshop. 43

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43
TROUBLESHOOTING
Symptom
Cause
Action
The engine will not start
•
User error
Fuel valve closed.
Open the fuel valve.
Choke valve open.
Close the choke with cold engine.
Engine switch in OFF position.
Turn engine switch to ON.
•
Fuel system
Fuel tank empty.
Fill with fuel.
Machine stored without
Clean tank, sludge reservoir and
observing proper procedure
empty carburetor.
from chapter “Storage/Winter
Fill the tank with fresh fuel.
storage”.
Contamination, water or ice in
Clean tank, sludge reservoir,
fuel system
fuel lines and carburetor.
Fill the tank with fresh fuel.
Carburetor problems.
Contact an authorized service
workshop.
•
Spark plug
Wrong spark plug type.
Replace the spark plug.
Buildup on electrodes.
Check electrode gap and clean or
Short circuit.
replace spark plug.
Gasoline or oil on the spark plug.
Clean the spark plug. Air the
engine out. Start with full throttle.
•
No spark after
Faulty engine switch, cable
Contact an authorized service
checking spark plug
or ignition.
workshop.
•
Low compression
Serious interior engine
Contact an authorized service
damage or faulty valves.
workshop.
Engine is gutless or runs unevenly
•
Air filter
Clogged air filter.
Clean or replace the air filter.
•
Fuel system
Machine stored without observ-
Clean tank, sludge reservoir and
ing proper procedure from
empty carburetor.
chapter “Storage/Winter storage”.
Fill the tank with proper fuel.
(Blue exhaust)
Tank filled with 2-cycle mixed oil.
Fill the tank with proper fuel.
(Voluminous blue-white
Tank filled with diesel.
Clean tank, sludge reservoir
exhaust)
and empty carburetor.
Fill the tank with proper fuel.
(Black exhaust)
Choke left on.
Open choke valve.
Clogged air filter.
Clean or replace the air filter.
Carburetor problems
Contact an authorized service
workshop.
•
Ignition system
Wrong spark plug type.
Replace the spark plug.
Buildup on electrodes.
Check electrode gap and clean or
Short circuit.
replace spark plug.
Faulty ignition unit.
Contact an authorized service
workshop.
•
Low compression
Serious interior engine damage
Contact an authorized service
(possible blue
or faulty valve.
workshop.
exhaust)