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© Böhmer-AG 2020
AG-178FD / AG-192FD
Troubleshooting Continued
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.
Overheating
Allow engine to cool before restarting. If possible, improve engine cooling, such as operating in lower
temperatures or in shade etc.
Difficulty restarting the engine after use or engine stops suddenly during use.
Carburettor blocked
Clean the carburettor.
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.
Reduced Engine Speed/Power During Use
Carburettor blocked
Clean the carburettor.