KC-435
19
1.5.6 Problems and their solutions
Problem Cause Solution
The engine does not start Not enough fuel in the tank Fill in the fuel
Engine switch in STOP (0) position Move the switch to START (I) position
Spark plug not installed correctly or not
connected
Check connection and tightening of the
spark plug
Incorrect spark plug or spark plug not
correctly adjusted
Replace the spark plug with the right one,
or clean the spark plug and adjust the
electrode gap
Engine overfilled with fuel Dismount the spark plug and dry it out
correctly; install it back
Fuel filter clogged, defective carburettor,
defective ignition, stammering valves,
etc.
Take the machine to an authorized
service
It is difficult to start the engine
or the engine loses power
Dirty air filter Clean the filter
Bad fuel, dirts or water in fuel tank
and/or in carburettor
Drain, clean and dry out the fuel tank and
the carburettor, fill in fresh fuel
Fuel tank bleeding clogged Clean the bleeding opening of the fuel
tank cap
Engine is hot and choke is on Turn the choke off
The engine run is unstable Incorrect spark plug or spark plug not
correctly adjusted
Replace the spark plug with the right one,
or clean the spark plug and adjust the
electrode gap
Dirty air filter Clean the filter
The engine is overheating Incorrect spark plug or spark plug not
correctly adjusted
Replace the spark plug with the right one,
or clean the spark plug and adjust the
electrode gap
Dirty air filter Clean the filter
Dirty fins of engine cooling, clogged
starter intake, etc.
Clean the fins and starter surroundings
Low oil level in engine Fill in the oil
Excessive machine vibrations Cutting tool not balanced or incorrectly
installed
Check fastening of the cutting tool,
replace it with a new one
Bolts holding the engine are loosened Tighten the bolts
Table 6: Problems and their solutions
1.5.7 Washing and cleaning the machine
! When cleaning and washing the machine, observe valid regulations and laws concerning protection of
watercourses and other water resources against their pollution and contamination with chemical
substances.
Never wash the engine using a water stream! A malfunction of the electric equipment of the engine
could appear after starting.
Don’t use pressure washers for washing the machine.
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