Güde KS 400-41 V Mode D'emploi D'origine page 43

Fault finding
Problem
The engine doesn't start
The engine runs too fast
when idling
The engine does not give
maximum power
The engine does not
come to a complete stop
The chain runs despite
idling
Cause
1. Operating switch set to "OFF"
2. Tank empty
3. Engine flooded
4. Spark plug dirty (carbon residue on the
electrodes), electrode gap too large
5. Carburettor, nozzles dirty
6. Spark plug connection, defective igni-
tion cable
7. No ignition spark
1. Engine is cold
1. Spark plug dirty (carbon residue on the
electrodes), electrode gap too large
2. Carburettor, nozzles dirty
3. Carburettor, nozzles dirty
4. Exhaust, cylinder exhaust port
5. Sealing ring leaking in the crankcase
6. Worn cylinders, pistons/rings
7. Incorrect fuel mixture (too much oil)
8. Incorrect ignition
1. Spark plug light grey with signs of glow
(melting beads)
2. Carbon residues in the combustion
chamber
1. Idle speed too high
Troubleshooting
1. Set operating switch to "ON"
2. Fill up the tank
3. Remove fuel, start several times if
necessary, remove spark plug, clean
and dry
4. Clean spark plug, check heat value of
spark plug and replace spark plug if
necessary, adjust to 0.6-0.8 mm
5. Clean the carburettor in a specialist
workshop, have it blown out
6. Have it replaced in a specialist work-
shop.
7. Check short circuit button, cable, check
ignition module, and if necessary have
them replaced in a specialist workshop
and have the gap dimension (0.3-0.4
mm) adjusted.
1. Slowly warm up, and, if necessary, close
the choke a little.
1. Clean spark plug, check heat value of
spark plug and replace spark plug, if
necessary, adjust to 0.6-0.8 mm
2. Clean the carburettor in a specialist
workshop, have it blown out
3. Clean
4. Dismantle and clean the exhaust at
a specialist workshop and have any
carbon residue removed.
5. Have it replaced in a specialist work-
shop.
6. Replace cylinder, piston or piston rings
in a specialist workshop, grind cylinder
and have excess piston size fitted.
7. Refuel according to instructions
8. Have the gap dimension of the ignition
module (0.3-0.4 mm) adjusted in a
specialist workshop.
1. Install a spark plug with a higher heat
value.
2. Have the cylinder head, piston crown
and cylinder ducts cleaned in a special-
ist workshop.
1. Have the idle speed adjusted/reduced
by a specialist workshop
ENGLISH
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