21
TROUBLE SHOOTING
Carburettor malfunctions can be identified by the following symptoms:~
FUEL / AIR MIX TOO RICH
1.
Engine noise is dull and intermittent.
2.
The condition grows worse when the engine is hot.
3.
The condition becomes worse when the choke is opened.
4. The condition may improve slightly when the air filter is removed.
5.
Spark plugs become fouled.
6. Exhaust gas is heavy
7.
Engine chokes when throttle is opened too quickly.
FUEL / AIR MIX TOO LEAN
1.
The engine becomes overheated.
2.
The condition improves when the choke is opened or the primer pump is operated.
3.
Acceleration is poor.
4. Spark plugs burn whitish.
5.
The revolutions of the engine fluctuate and a lack of power is noticed.
6. Engine backfires
If a carburettor is experiencing too rich or too lean fuel mix problems:~
1.
Check to see that the throttle is working properly.
2.
Disassemble and clean the carburettor.
3.
Clogged air or fuel passages are the usual cause of a rich or lean mix.
4. If cleaning does not work – tuning may be necessary or new jets
5.
Check to see that one or both of the fuel chokes are not sticking.
If the fuel choke is sticking the motor will start but will run very rough. At idle it will cut out, on
removing plugs a quantity of fuel will run out of the plug hole and the plug will be full of fuel.
Excess play on the choke cable is an indication of which one is sticking.
Содержание Aquilla 582
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