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- When the machine is in storage for a long time, drain fuel from the fuel tank and
carburetor, as follows: Drain all fuel from the fuel tank. Dispose of properly and in
accordance with all local laws.
- Remove the spark plug and a few drops of oil into the spark plug hole.
Then, pull the starter gently, so that oil covers the engine inside and tighten the
spark plug.
- Clear dirt or dust from the cutter blade and outside of engine, wipe them with a oil-
immersed cloth and keep the machine in a place as dry as possible.
Maintenance schedule
Fault location
STORAGE
General Engine assembly, screws and nuts Visual inspection for damage and tightness
Check for general condition and security
After each refuelling Control lever Functional check
I-O switch Functional check
Daily Air filter To be cleaned
Cooling air duct To be cleaned
Cutting tool Check for damage and sharpness
Idling speed Inspection (cutting tool must not move)
Weekly Spark plug Inspection, replace if necessary
Muffler Check and if necessary clean the opening
Quarterly Suction head To be replaced
Fuel tank To be cleaned
Shuting down procedure Fuel tank Empty fuel tank
Carburetor Operate until engine runs out of fuel
Fault System Observation Cause
Engine not starting or
with difficulty
Ignition system Ignition spark O.K. Fault in fuel supply or compression system, mechanical
defect
No ignition spark I-O switch operated, wiring fault or short circuit, spark plug
or connector defective, ignition module faulty
Fuel supply Fuel tank filled Incorrect choke position, carburetor defective, fuel supply
line bent or blocked, fuel dirty
Compression No compression when
pulled over
Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective or improper
sealing of spark plug
Mechanical fault Starter not engaging Broken starter spring, broken parts inside of the engine
Warm start problems Tank filled ignition spark
existing
Carburetor contaminated, must be cleaned
Engine starts but dies Fuel supply Tank filled Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted, cable
or I-O switch faulty
Insufficient performance Several systems may
simultaneously be
affected
Engine idling poor Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
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