Troubleshooting - Scheppach MFH4200-4BP Translation Of Original Instruction Manual

13. Troubleshooting

The table below contains a list of fault symptoms and explains what you can do to remedy the problem if your equip-
ment fails to work properly. If the problem still persists after working through the list, please contact your nearest ser-
vice workshop.
Important hint in case of sending the equipment to a service station:
Due to security reasons please see to it that the equipment is sent back free of oil and gas!
Fault Possible cause
Machine does not • Air filter is contaminated.
start. • Fuel filter is blocked.
• Lack of fuel supply.
• Fault in the fuel line.
• Starting device is faulty.
• Engine stalled.
• Spark plug cap not attached.
• No spark.
• Engine faulty.
• Carburetor faulty
Machine starts but • Wrong carburetor setting (idle speed).
stops again.
Engine starts but the • Cutting tool blocked.
cutting tool stops. • Internal fault (drive shaft, gearbox).
• Clutch faulty.
Machine works with • Carburetor set up incorrectly.
interruptions (sputter- • Spark plug is sooty.
ing). • On/off switch faulty.
Smoke is generated. • Wrong fuel mix.
• Carburetor set up incorrectly.
Machine does not • Machine is overloaded.
work at full power. • Air filter is contaminated.
• Carburetor set up incorrectly.
• Silencer is blocked.
Brush cutter does not • Blades are blunt or damaged.
work at full power. • Cut material is too high (machine over-
load).
Grass trimmer does • Cutting line too short or damaged.
not work at full power. • Machine is overloaded because the grass
is too high.
Cutting line cannot be • Spool empty.
fed through.
Pole saw does not • Chain tension too high.
saw, it plucks or • Chain blunt.
vibrates. • Chain attached incorrectly.
• Chain worn.
Saw chain becomes • No oil in the tank.
hot or saw chain lubri- • Oil line blocked.
cation does not work. • Chain tension too high.
• Chain blunt.
44 | GB
Remedy
• Clean/replace the air filter.
• Clean or renew the fuel filter.
• Re-fuel.
• Check the fuel line for kinks or damage.
• Contact the service centre.
• Remove the spark plug, clean and dry it; then
pull the starter rope several times; re-fix the
spark plug.
• Check the correct position of the spark plug
cap.
• Clean the spark plug or replace it, if applicable.
• Check the ignition cable for damage.
• Contact the service centre.
• Contact the service centre.
• Contact the service centre.
• Turn off engine and remove object.
• Contact the service centre.
• Contact the service centre.
• Contact the service centre.
• Clean the spark plug or replace it.
• Contact the service centre.
• Use two-stroke mixture at a ratio of 40:1.
• Contact the service centre.
• Do not use force during mowing/trimming.
• Clean the air filter or replace it.
• Contact the service centre.
• Check the exhaust.
• Sharpen or replace blades.
• Cut the grass in phases.
• Feed more cutting line through or replace it.
• Cut the grass in phases.
• Replace spool.
• Check and reset chain tension.
• Have the chain sharpened or replace it.
• Re-attach the chain.
• Replace the chain.
• Refill oil.
• Clean the oil line.
• Set the chain tension.
• Have the chain sharpened or replace it.
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