Raptor 900 Compact Wood Chipper/Shredder
E&OE
©2018 Michigan USA
23
Engine starts but runs erratically.
Possible Fault
Action
Spark plug lead loose
Ensure the spark plug lead is undamaged and is securely connected to the spark plug
terminal.
Choke ON
Set the choke to the "HOT" or "RUN" position.
Blocked fuel line or stale fuel.
Clean the fuel line. Fill the tank with clean, fresh fuel.
Water or dirt in fuel system
Drain fuel tank and carburettor. Refill with fresh fuel.
Dirty air filter
Perform an
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 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.
Carbon build-up on spark plug
Perform a
Fuel system blockage
Clean fuel lines / fuel filter / carburettor / fuel injector.
Reduced engine speed/power during use.
Possible Fault
Action
Blocked air filter
Perform an
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
Perform a
Fuel system blockage
Clean fuel lines / fuel filter / carburettor / fuel injector.
Engine overheats.
Possible Fault
Action
Engine oil level low
Fill the crankcase with the correct engine oil type to the "MAX" indicator or just under.
Dirty air cleaner
Perform an
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