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Stump Grinder
E&OE
© 2017 Baumr-AG
14
Troubleshooting
Symptom
Cause
Action
The engine will not start
Fuel valve closed.
Open the fuel valve.
User error
Choke valve open.
Close the chock with cold engine.
Engine switch in OFF position.
Turn engine switch to ON
Fuel system
Fuel tank empty.
Fill with fuel.
Machine stored without observing
proper procedure from chapter
“Storage/Winter storage”.
Clean tank, sludge reservoir and
empty carburetor.
Fill the tank with fresh fuel.
Contamination, water or ice in fuel
system.
Clean tank, sludge reservoir, fuel
lines and carburetor fill the tank with
fresh fuel.
Carburetor problems.
Spark plug
Wrong spark plug type.
Replace the spark plug.
Build-up on electrodes.
Check electrode gap and clean or
replace spark plug.
Short circuit.
Replace the spark plug.
Gasoline or oil on the spark plug.
Clean the spark plug. Air the engine
out. Start with full Throttle.
No spark after service
Faulty engine switch, cable or
ignition.
Contact an authorized service
workshop.
Low compression authorized
Serious interior engine damage or
faulty valves.
Contact a service workshop.
Engine is gutless or unevenly
Air filter
Clogged air filter.
Clean or replace the air filter.
Fuel system
Machine stored without observing
proper procedure from chapter
“Storage/Winter storage”.
Clean tank, sludge reservoir and
empty carburetor.
Fill the tank with proper fuel.
(Blue exhaust)
(Voluminous blue- white exhaust)
Tank filled with 2-cycle mixed oil.
Tank filled with diesel.
Clean tank, sludge reservoir and
empty carburetor.
Fill the tank with proper fuel.
Open choke valve.
Clean or replace the air filter.
(Black exhaust)
Choke left on.
Clogged air filter.
Carburetor problems.
Contact an authorized service
Workshop.
Ignition system
Wrong spark plug type.
Build-up on electrodes.
Short circuit.
Faulty ignition unit.
Replace the spark plug.
Check electrode gap and Clean or
replace spark plug.
Contact an authorized service
Workshop.
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