Husqvarna DT22 Owners Manual - Page 28
Troubleshooting, GasOline Or Oil On the spark plug.
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TROUBLESHOOTING Symptom Engine will not start User error Fuel system Cause Fuel valve closed. Choke valve open Engine switch in OFF position Fuel tank empty Machine stored without observing proper procedure from chapter "Storage/Winter storage" Contamination, water or ice in fuel system. Carburetor problems. Spark plug Wrong spark plug type. Build-up on electrodes. Short circuit. Gasoline or oil on the spark plug. No spark after checking spark plug Faulty engine switch, cable or ignition. Low compression Serious interior engine damage or faulty valves. Engine is under-powered or runs unevenly Air filter Clogged air filter Fuel system Machine stored without observing proper procedure from chapter "Storage/Winter storage" Blue or voluminous blue-white exhaust Contaminated or incorrect fuel Black exhaust Choke left on Clogged air filter Carburetor problems Ignition system Wrong spark plug type Build-up on electrodes. Short circuit. Faulty ignition unit. Low compression Serious interior engine damage or faulty valves. Action Open the fuel valve. Close the choke with cold engine. Turn the engine switch to ON Fill with fuel Clean tank, sludge reservoir and empty carburetor. Fill the tank with fresh fuel. Clean tank, sludge reservoir and empty carburetor. Fill the tank with fresh fuel. Contact an authorized service workshop. 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. Contact an authorized service workshop. Contact an authorized service workshop. Clean or replace the air filter Clean tank, sludge reservoir and empty carburetor. Fill the tank with fresh 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. Replace the spark plug Check electrode gap and clean or replace spark plug. Contact an authorized service workshop. Contact an authorized service workshop. 28