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MAINTENANCE SCHEDULE
General
Engine assembly, screws and nuts
After each refueling
Control lever
I-O switch
Daily
Air filter
Cooling air duct
Cutting tool
Idling speed
Weekly
Spark plug
Muffler
Quarterly
Suction head
Fuel tank
Yearly
Fuel tank
(Long Term)
Carburetor
TROUBLESHOOTING CHART
Trouble
Engine does not start or
Ignition system
hard to start
Fuel supply
Compression
Mechanical fault
Warm start problem
Engine starts but soon
Fuel supply
stops
Insufficient performance
Several systems
System
Observation
Ignition spark O.K.
No ignition spark
Fuel tank filled
No compression when pulled over
Starter not engaging
Tank filled
Ignition spark
Tank filled
Poor engine idling
Visual inspection for damage and tightness.
Check for general condition and security.
Functional check
Functional check
To be cleaned
To be cleaned
Check for damage and sharpness
Inspect (Cutting tool does not rotate)
Inspection, replace if necessary
Check and clean the opening if necessary
To be replace
To be cleaned
Empty fuel tank
Operate until engine stops
Failure in fuel supply or compression system, mechanical defect
I-O switch operated, wiring fault or short circuit, spark plug or
connector defective, ignition module faulty
Wrong choke position, defective carburetor, fuel supply line bent
or blocked, dirty fuel
Cylinder bottom gasket defective, Crankshaft seals damaged,
Cylinder or piston rings defective or improper sealing of spark
plug
Broken starter spring, broken parts inside the engine
Carburetor contaminated or damaged. Clean or replace.
Incorrect idle-adjustment,
Carburetor contaminated
Defective tank, fuel supply line interrupted, cable or I-O switch
defective.
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
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Cause
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