Engine Running Issue - Husqvarna 545RXT AT Workshop Manual

16.1 Engine running issue

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
Run Auto Test, check for error codes. Error code might give a hint of the problem
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 ?
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.
times.
Connect to CST.
Starting issue
Change decompression
No
valve
Does the
No
engine
start ?
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.
No
4. Measure the distance between flywheel and ignition
module.
5. Perform the "Ignition System Diagnostic". (see "Igni-
tion System Diagnostic" instr.)
Does the
No
engine
start ?
1. Check fuel filter.
2. Check fuel houses for leakage by pressure test.
3. Check if impulse hose is blocked or leaks.
No
4. Check carburettor for leakage by pressure test.
(see separate instr.)
5. Check fuel filter in the carburettor.
Does the
No
engine
start ?
Does the
engine
start ?
Troubleshooting
Issue still remains?
Contact your Husqvarna
Local Sales Company for
No
advice.
ended
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