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370310
F112003A
29
ENGINE
FAULT
CAUSE
MEASURES TO BE TAKEN
Engine sluggish at switch on
1. Accelerator not in start-up
position
2. Choke
not
closed
3. Petrol does not arrive
4. Air bubbles or water inside
the petrol lines
5. Thick oil prevents rotation
6. Winding or start mecha-
nism faulty
7. Spark plug in poor condi-
tion
1. Move the accelerator to the
intermediate position
2. Close the choke when cold.
3. Check the fuel tank and
remove any water or sedi-
ment.
4. Make sure that the feed
cock is open.
5. Check the lines and bands.
Repair or replace if dam-
aged
6. Use oil with a viscosity
suited to the temperature
7. Replace winding or start
mechanism
8. Clean or replace spark
plug. Adjust the distance
between the electrodes.
Poor power
1. No fuel
2. Air filter blocked
3. Elastic bands worn
1. Refill tank with petrol
2. Clean air filter
3. Replace
elastic
bands
Engine stalls
1. No fuel
2. Feed cock shut off
1.refill tank with petrol
2.open feed cock
Exhaust fumes dark
1. Low grade fuel
2. Too much engine oil
1. Replace with high grade
fuel
2. Restore engine oil to cor-
rect level
Engine emits black smoke and
power is poor
1. Air filter blocked
2. Choke not fully opened
1. Clean
air
filter
2. Open the choke completely
Exhaust fumes bluish
1. Too much engine oil
2. Elastic bands worn
1. Restore engine oil to cor-
rect level
2. Replace
elastic
bands
Silencer becomes red through
overheating
1.
Air filter blocked
2.
Inside of self-winding
starter blocked with grass
cuttings
1.
Clean air filter
2.
Clean self-winding starter
housing
For any problems not easily resolved or in case of doubt you are advised to contact your dealer.
Summary of Contents for SC120H
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