Troubleshooting
Problem
Possible Cause
Corrective Action
1. The fuel-valve lever is in the Off
position.
1. Move the fuel-valve lever to the On
position.
2. The choke is closed.
2. Open the choke when starting a hot
engine.
3. The choke is open.
3. Close the choke when starting a cold
engine.
4. The engine On/Off switch is in the Off
position.
4. Rotate the switch to the On position.
5. The fuel tank is empty.
5. Fill the fuel tank with fresh fuel.
6. The engine contains bad/old fuel.
6. Drain the fuel tank and carburetor. Fuel
the machine with fresh gasoline.
7. The spark plug is fouled or improperly
gapped.
7. Gap or replace the spark plug.
8. The spark plug is wet with fuel (flooded
engine).
8. Remove the spark plug, dry it, and
install the plug. Start the engine with
the throttle in the Max position.
The engine will not start.
9. The spark-plug wire is loose or
disconnected.
9. Remove the spark-plug wire, clean the
spark-plug terminal and the terminal
socket in the boot of the spark-plug
wire, and reinstall the spark-plug wire.
1. The air filter is restricted.
1. Clean or replace the air filter element(s).
2. The engine contains bad/old fuel.
2. Drain the fuel tank and carburetor.
Refuel with fresh gasoline.
3. There is water or contamination in the
fuel.
3. Drain the fuel tank and carburetor. Fuel
the machine with fresh gasoline.
4. The fuel line is restricted.
4. Clean the fuel filter and sediment cup.
5. The choke is closed
5. Open the choke.
6. The spark plug is worn or has buildup
on the electrodes.
6. Check the electrode gap and adjust or
replace the spark plug.
The engine lacks power or runs rough.
7. There is too much oil in the engine
crankcase.
7. Drain the oil to the proper level.
1. There is an excessive amount of
concrete buildup along the edges of
the board.
1. Remove excessive concrete from the
board.
2. The operator is moving too slowly.
2. Move the screed at a faster pace.
3. There is too much vibration for the type
of concrete.
3. Reduce engine speed and move the
screed at a faster pace.
4. The concrete is too high or low on one
side.
4. Have workers shape the concrete as
close as possible to grade. Maintain
about 1 inch of concrete across the
front of the board at all times.
The machine is not smoothing the
concrete properly.
5. The board is not positioned correctly.
5. Reposition the board.
24
