The engine does not start, there are sparks in the spark plug.
Conditions Possible causes Recommended step
The compression of
the engine is correct
and the fuel con-
sumption is as usual.
There is too much fuel in the engine. Drain the fuel. Adjust or replace the carburet-
or.
The air filters are dirty. Clean the foam air filter and replace the pa-
per air filter.
The type of fuel is not correct or the fuel is not
mixed correctly.
Replace the fuel to the correct type of fuel
and the correct mixture.
The fuel consumption
is as usual but there
is compression of the
engine is low.
The spark plug is not tightened correctly. Tighten the spark plug. Refer to
Servicing da-
ta on page 6
.
The surface layer of the cylinder and the pis-
ton ring are worn or damaged.
Replace the cylinder or the piston rings.
There is a leakage between the cylinder and
crankcase.
Replace the cylinder base gasket.
There is no fuel sup-
ply to the engine.
The carburetor must be adjusted. Adjust the carburetor.
There is dirt in the carburetor or fuel line. Clean the carburetor and/or fuel line.
The fuel filter is dirty. Clean or replace the fuel filter
There is a leakage from the crankcase. Replace the seal ring of the crankcase
halves.
The engine stops during operation.
Conditions Possible causes Recommended step
The engine suddenly
stops.
The on/off switch is off. Put the on/off switch in the on position.
The spark plug or the spark plug cap is not
tightened correctly.
Tighten the spark plug and connect the spark
plug cap correctly.
The cable to the on/off switch is disconnected
or damaged.
Connect the cable to the on/off switch or re-
place the cable to the on/off switch.
The air gap of the ignition module is not cor-
rect.
Examine the air gap. Adjust the air gap if it is
necessary. Refer to
To remove and install the
ignition module on page 23
.
The ignition module has internal damage. Examine the ignition module. Replace the ig-
nition module if it is damaged. Refer to
To re-
move and install the ignition module on page
23
.
The engine is damaged. Disassemble the engine and examine it.
The air filters are dirty. Clean the foam air filter and replace the pa-
per air filter.
The engine speed de-
creases and then the
engine stops.
The fuel tank is empty. Fill the fuel tank with the correct fuel type.
There is water or dirt in the fuel system. Drain the fuel tank. Fill the fuel tank with new
fuel of the correct type.
The carburetor is blocked. Disassemble the carburetor and clean it.
The engine speed in-
creases and then the
engine stops.
The fuel tank is empty. Fill the fuel tank with the correct fuel type.
The air filters are dirty. Clean the foam air filter and replace the pa-
per air filter.
The carburetor is blocked. Disassemble the carburetor and clean it.
44 - Troubleshooting 1662 - 003 - 04.11.2021
To Next Page
Loading...
