Engine Is Difficult To Stop; Engine Stops Working During Operation - Husqvarna 525P4S Workshop Manual

8.2 Engine stops working during operation

Symptom/Category
There are no sparks at the spark plug
Engine suddenly
stops
Rotation gradually
decreases and the
engine stops
Rotation suddenly
increases, and then
the engine stops

8.3 Engine is difficult to stop

Symptom/Category
Engine suddenly
stops
Switch
80
- English
Cause
1. The switch has been touched, stopping
the engine
2. The switch is OFF
3. The plug cap has come off
4. The switch cable or high-voltage cable
trunking is worn
5. Internal fault in the coil
6. The engine has burned out
7. The breather air vent is blocked
1. Lack of fuel
2. Blockage inside the carburetor
3. There is water in the fuel
1. Lack of fuel
2. The breather air vent is blocked
3. Blockage inside the carburetor
Cause
1. Fuel is thin
2. Blockage due to dirt in the air passage for
cooling
3. Blockage due to dirt on the cylinder fin
4. Poor quality fuel is being used
5. Carbon has collected in the combustion
chamber (run-on oc- curs)
6. The spark plug tip is red hot
1. Faulty switch
2. Cable is broken
3. Internal fault in the ignition module
Troubleshooting
Action
Restart
Operate by setting to "RUN"
or " I "
Fit it back on fully
Replace
Replace
Disassemble and repair
Clean
Fill with fuel
Clean
Discharge and clean the inside
of the tank, then fill with good
quality fuel
Fill with fuel
Clean
Clean
Action
Adjust, repair or replace the
carburetor
Clean
Clean
Replace with good quality fuel
Clean
BPMR8Y:
Adjust to 0.65 mm
Replace
Replace
Replace