Bäumr-AG Petrol Powered Lawn Mowers
E&OE
©2017 Bäumr-AG
22
Difficulty restarting the engine after use or engine stops suddenly during use.
Possible Fault
Action
No fuel or engine oil
Check fuel level and ensure adequate fuel is available. For some 4-stroke engines, an
engine oil sensor will automatically switch off the engine or prevent starting if a low engine oil
level is detected.
Cutting blades jammed
Remove jammed material from the machine. In the case of obstacles in the work area (rocks,
roots etc), avoid them or raise cutting height.
Overheating
Allow engine to cool before restarting. Ensure all air vents and heat dissipation surface are
clean and free of debris. If possible, improve engine cooling, such as operating in lower
temperatures.
Carbon build-up on spark plug
Remove the spark plug and clean any carbon from the electrodes before re-installing it.
Carburettor blocked
Clean the carburettor.
Reduced engine speed/power during use.
Possible Fault
Action
Blocked air filter
Check and clean air filter.
Carbon build-up in engine and/or
entry to exhaust silencer
Remove the engine cylinder head and clean any carbon from the combustion chamber. For
the exhaust silencer, remove it and clean any carbon deposits from the exhaust entry port.
Carbon build-up on spark plug
Remove the spark plug and clean any carbon from the electrodes before re-installing it.
Carburettor blocked
Clean the carburettor.
Grass cutting is poor.
Possible Fault
Action
Blades dull or damaged
Sharpen or replace cutting blades.
Cutting too much in one pass
Adjust the cutting height and rate of mowing to reduce load on the engine. For tall or very
thick grass, cut in several passes. Do not attempt to cut beyond the capacity of the machine.
Cutting height not suitable
Adjust cutting height as required.
Excessive vibration.
Possible Fault
Action
Blades dull or damaged
Sharpen or replace cutting blades.
Fasteners loose
Check all accessible fasteners for tightness.
Engine output shaft worn or bent
Replace worn or damaged parts as required.
