16
- 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 confirm that oil film 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 filter
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 difficulties
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 filled
Incorrect choke position, carburetor defective, suction
head (gas line filter) 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 filled Ignition spark
existing
Carburetor contaminated, have it cleaned
Engine starts but dies
immediately
Fuel supply
Tank filled
Incorrect idling adjustment, suction head or 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
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
