26. Troubleshooting
1. Difficulties during commissioning
Situation
Spark plug
No ignition
spark
other
Compression
Weak ignition
spark
The carburetor does not
pump oil anymore.
regular oil supply but
weak compression
regular oil supply and
good ignition spark
2. Emergencies during operation
Situation
Cause
Choke is in the wrong position. The exhaust
system does not clog the air supply. Moving
the engine does
elements have worn ignition spark weakly too
not reach the
much valve clearance. Cylinder head sooty
speed
Operating
Lines to carburetor blocked Spark plug spacing
materials are
incorrect
leaking
Engine noises
Wrong choke position Camshaft damaged
Failure of the check valve on the tank cap
Carburetor leaking
The carburetor gasket is worn out
If no troubleshooting solves the problem, contact your dealer.
Original Bedienungsanleitung FX-4MS142_de_en_fr_ita_rev01
Cause
Coal deposit
ignition coil defective flywheel magnet too
weak
Too much gasoline in the combustion
chamber Poor fuel or water in the tank
Oil line blocked
Piston rings do not close spark plug not
tightly screwed on Cylinder head, not tight
Incorrect valve clearance or ignition
timing.
Poor contact between ignition cap and
spark plug Short circuit or on/off switch
Solution
Clean the spark plug.
Adjust the gap
0.6~0.7mm Replace the
spark plug
replaced ignition coil
replaced flywheel
Remove the spark plug
and allow it to dry.
Replace fuel
Cleaning the carburetor
and cleaning the pipes
replace screw tight
Replace or adjust
replace or check
Solution
Open choke Replace exhaust system
Check or replace ignition coil, flywheel.
Spark plug Adjust valves Clean cylinder
head
Adjust replaced lines and carburetor gap
Check Replace camshaft
replaced the tank cap
Replace carburetor or gasket