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- When keeping the machine in storage for a long time, drain fuel from the fuel tank
and carburetor, as follows: Drain all fuel from the fuel tank.
- Remove the spark plug and add a few drops of oil into the spark plug hole. Then,
pull the starter gently to conrm that oil lm covers inside of the engine and
tighten the spark plug.
- Clear dirt or dust from the cutter blade and outside of the engine, wipe them with
a oil-immersed cloth and keep the machine at a place as dry as possible.
STORAGE
After each refuelling Throttle lever
I-O switch
Check the function
Check the function
Before each use Engine assembly,
screws and nuts
Air lter
Cooling air duct
Cutting tool
Idling speed
Fuel tank
Visually check for damage and tightness
Check for general condition and security
Clean
Clean
Check for damage and sharpness
Inspection (cutting tool must not move)
Check and clean
Every 50 hours Gear case Supply grease
Weekly Spark plug Check and replace if necessary
Yearly Fuel pipe Replace
Biyearly Tank cap Replace
Before long term storage Fuel tank
Carburetor
Suction head
Empty and clean
Operate until the engine runs out of fuel
Replace
MAINTENANCE SCHEDULE
FAULT LOCATION
Fault System Observation Cause
Engine not starting or
under difculties
Ignition system Ignition spark is present Faulty 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 lled Incorrect choke position, carburetor defective, suction
head (gas line lter) dirty, fuel supply line bent or
interrupted
Compression Inside of engine Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective
Outside of engine Improper sealing of spark plug
Mechanical fault Starter not engaging Broken starter spring, broken parts inside of the engine
Warm start problems Tank lled Ignition spark
existing
Carburetor contaminated, have it cleaned
Engine starts but dies
immediately
Fuel supply Tank lled Incorrect idling adjustment, suction head or carburetor
contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or I-O switch faulty
Insufcient performance Several systems may
simultaneously be
affected
Engine idling Air lter contaminated, carburetor contaminated, mufer
clogged, exhaust duct in the cylinder clogged