14
MAINTENANCE SCHEDULE
TROUBLESHOOTING CHART
General
Engine assembly, screws and nuts
Visual inspection for damage and tightness.
Check for general condition and security.
After each refueling
Control lever
I-O switch
Functional check
Functional check
Daily
Air filter
Cooling air duct
Cutting tool
Idling speed
To be cleaned
To be cleaned
Check for damage and sharpness
Inspect (Cutting tool does not rotate)
Weekly
Spark plug
Muffler
Inspection, replace if necessary
Check and clean the opening if necessary
Quarterly
Suction head
Fuel tank
To be replace
To be cleaned
Yearly
(Long Term)
Fuel tank
Carburetor
Empty fuel tank
Operate until engine stops
Trouble
System
Observation
Cause
Engine does not start or
hard to start
Ignition system
Ignition spark O.K.
Failure 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
Wrong choke position, defective carburetor, fuel supply line bent
or blocked, dirty fuel
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 the engine
Warm start problem
Tank filled
Ignition spark
Carburetor contaminated or damaged. Clean or replace.
Engine starts but soon
stops
Fuel supply
Tank filled
Incorrect idle-adjustment,
Carburetor contaminated
Defective tank, fuel supply line interrupted, cable or I-O switch
defective.
Insufficient performance
Several systems
Poor engine idling
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
