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TROUBLESHOOTING
Faults that cannot be remedied using this table must be remedied in an AL-KO workshop.
Please enter the engine serial number and date of purchase below. You need this information when
ordering spare parts, in the event of technical questions or questions concerning the warranty.
Engine serial number: ________________________________
Date of purchase: ________________________________
Fault
Starting problems
Erratic function
24
Possible cause
Lack of fuel
Old fuel of deposits in the tank
Wrong starting procedure
Spark plug not inserted
Spark plug damp, electrodes soiled
or wrong electrode gap
Clogged air filter
Unsuitable oil for the season
Formation of vapour bubbles in the
carburettor due to high temperatu-
res
Ignition problems
Ignition problems
Electrodes of the spark plug soiled
or wrong electrode gap
Spark plug cap incorrectly fitted
Clogged air filter
Move throttle to position << Choke
>>
Ignition problems
Ignition problems
Remedy
Check and top up
Drain the tank and refill with fresh
fuel
Carry out the starting procedure
correctly
Check that the spark plug cap is se-
curely fitted on the spark plug
Check
Check and clean
Replace with suitable oil
Wait a few minutes and then try to
start again
Contact an authorised dealer
Contact an authorised dealer
Check
Check that the spark plug cap is
properly fitted
Check and clean
Move throttle to position << Fast >>
Contact an authorised dealer
Contact an authorised dealer
Troubleshooting
AL-KO Pro 450