If the lawn mower jerks and jerks, there can be no question of an even grass cut. If the engine still emits smoke, you should find out the fault and fix it. This guide gives tips on what to do if a petrol mower is not running smoothly and is smoking.
If the lawn mower runs rough and smokes, the carburetor is usually to blame
A dirty carburetor throws the lawnmower out of sync
A common cause of engine problems on lawn mowers is a dirty carburetor. In view of the permanent exposure to grass, earth, twigs and leaves, it is not surprising that deposits form here. If a petrol mower is sputtering and smoking, put the carburetor through a cleaning program. How to proceed professionally:
- Close the fuel line or empty the fuel tank
- Remove the carburetor according to the manufacturer's instructions
- Remove all seals and replace with new ones from specialist dealers
- Fill a sufficiently large container with benzine and place the carburetor in it
- Meanwhile, blow out each nozzle with compressed air or clean it with a fine wire
- Also clean the air filter and spark plug
Finally, take the carburetor out of the white spirit and rub it dry with a rag. Again, refer to the owner's manual to help you install the carburetor. The installation of the carburetor is less complicated if you document each work step with a photo when removing it. This is especially useful when the manual is difficult to understand or not available.
Adjust the carburetor - how to do it right
After cleaning, the carburettor is reset. After installing the freshly cleaned carburetor, start the lawn mower. How to regulate the engine:
- Screw in the adjusting screw with spring on the carburetor a little
- Engine speed increases
- Adjust the second fuel amount adjusting screw until the engine runs smoothly
In the last step, unscrew the adjusting screw with the spring a little to reverse the brief increase in engine speed.
tips
If a lawnmower sputters and smokes immediately after maintenance, the unit was most likely tilted incorrectly. To access the cutter bar, please always tilt your lawnmower with the spark plug upwards. Otherwise, the air filter, spark plug and cylinder head will be flooded with engine oil, causing the engine to run rough and emit smoke.