50
TROUBLESHOOTING
Problem
Probable cause
Page
Engine does not start
1. No fuel
25
2. Start/Stop button is in Stop position
29
3. Spark plug cap incorrectly attached or disconnected
43
4. Faulty spark plug or incorrect gap
45
5. Engine flooded. Remove spark plug, dry it with a cloth and
reinstall it.
45
6. Fuel filter is dirty. Clean it.
-
Starting difficult or loss of
power
1. Dirty air filter
45
2. Impurities in fuel tank
-
3. Water in fuel tank and in fuel
-
4. Fuel tank cap vent and /or carburettor clogged
-
5. Engine is hot; choke is closed. Open choke.
31
Uneven running
1. Faulty spark plug or incorrect gap
45
2. Dirty air filter
45
Engine overheats
1. Spark plug gap incorrect
45
2. Dirty air filter
45
3. Engine cooling fins clogged
-
4. Oil level too low
27
5. Starter pulley fouled by grass cuttings, etc.
-
Brush cutter vibrates
excessively
1. Blade incorrectly balanced or cutting attachment
incorrectly fitted
19
2. Engine bolts loose
-
GB
Содержание UMK425E
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