Does the
engine
start ?
Clean the engine (cylinder fins, fly wheel area etc) before start of troubleshooting.
Confirm that the fuel is of correct quality and not to old. Purge the fuel system 10
times.
Connect to CST.
Run Auto Test, check for error codes. Error code might give a hint of the problem
16.1 Engine running issue
Change decompression
valve
Starting issue
No
Troubleshooting
ended
No
1.
Check the spark plug and replace if necessary.
2.
Perform the “Spark Plug Test”. (see “Spark Plug Test”
instr.)
3.
Confirm stop switch functionality.
4.
Measure the distance between flywheel and ignition
module.
5.
Perform the “Ignition System Diagnostic”. (see “Igni-
tion System Diagnostic” instr.)
1.
Check fuel filter.
2.
Check fuel houses for leakage by pressure test.
3.
Check if impulse hose is blocked or leaks.
4.
Check carburettor for leakage by pressure test.
(see separate instr.)
5.
Check fuel filter in the carburettor.
Does the
engine
start ?
Does the
engine
start ?
No
No
If product has an decompression valve, check
that the deco valve deactivate correct.
Check if the system deliveries a spark
Confirm fuel system.
-Wet spark plug?
-Purge bulb function ok ?
No
Leakage test of engine
Use leakage spray to check:
1.
Cylinder gasket
2.
Intake system
3.
Cylinder
4.
Crankcase gaskets
5.
Crankcase
Perform a visual inspection of interface
between carburettor and intake rubber for
leakage.
No
No
Does the
engine
start ?
Issue still remains?
Contact your Husqvarna
Local Sales Company for
advice.
English – 75
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