Trouble Shooting Chart - Murray 20408x34A Instruction Manual

TROUBLE SHOOTING CHART

The Engine will not start.
1. Make sure the fuel tank is filled with clean
petrol. Do not use old petrol.
2. On a cold engine, push the primer button
(optional on some models) five times.
3. Make sure the wire for the spark plug is con-
nected to the spark plug.
4. Adjust the carburettor. See the engine
manufacturer's instructions.
5. There is too much petrol in the engine cylin-
der. Remove and dry the spark plug. Pull the
recoil–start grip several times. Install the
spark plug. Connect the wire to the spark
plug. Start the engine.
6. The engine is difficult to start in heavy or high
grass. Move the mower to a clean dry sur-
face.
7. Make sure the engine stop lever is in the op-
erating position.
8. Make sure the fuel valve is in the ON posi-
tion. See the engine manufacturer's instruc-
tions.
The Engine will not stop.
1. Release the engine stop lever.
F–99415
2. Check the engine stop cable. Replace the
cable if bent or damaged.
The Engine performance is bad.
1. Check the height of cut settings. Raise the
height of cut if the grass is high.
2. Check the bottom of the blade housing.
Clean the blade housing of grass and other
debris.
3. Check the wire to the spark plug. Make sure
the wire is connected.
4. Clean the engine cooling fins of grass and
other debris.
5. Check the carburettor adjustments. See the
engine manufacturer's instructions.
6. Check the spark plug gap. Set the spark plug
gap at 0.030".
7. Check the amount of oil in the engine. Fill
with oil if necessary.
8. Check the engine air cleaner. See the engine
manufacturer's instructions.
9. The petrol is bad. Drain and clean the fuel
tank. Fill the fuel tank with clean petrol.
Excessive Vibration.
1. Remove the blade. Check the blade and bal-
ance if necessary. See the blade mainte-
nance instructions.
10
2. Check for a bent or broken blade. A DAM-
AGED BLADE IS DANGEROUS AND MUST
BE REPLACED.
3. Check the blade adapter. REPLACE A BRO-
KEN BLADE ADAPTER.
4. If the vibration continues, take the mower to
an Authorized Service Centre.
The grass will not discharge correctly.
1. Clean the bottom of the mower housing.
2. Check for a badly worn blade. Remove and
sharpen the blade. For safety, replace the
blade every two years with a factory replace-
ment blade.
The grass is not cut even.
1. Check the height adjustment at each wheel.
The height adjustment must be the same for
each wheel.
2. Make sure the blade is sharp.
3. Check for a bent or broken blade. A DAM-
AGED BLADE IS DANGEROUS AND MUST
BE REPLACED.
4. Check for a broken blade adapter. REPLACE
A BROKEN BLADE ADAPTER.