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3.2 Service Intervals
3.2.1 Daily Inspections
Before operating the engine, a thorough daily inspection should be carried out. Observe the
following points:
1. Air filter - check condition and installation
2. Starter - check condition and installation
3. Ignition system - check condition, fastening, and connections
4. Fan housing - check condition and installation
5. Fan - check condition and fastening
6. Fan belt - check condition and belt tension
7. Cowling - check overall condition and the fasteners
8. Crank case and cylinders - check for leaks overall condition of installation
9. Spark plug caps - check condition and the connections
3.2.2 Periodic Inspections
Inspection interval
Cooling
Airway: check for free flow and freedom from pollutants X
Baffles: check for damage and cracks
Carburetor
Air filter: clean
Carburetor adjustments: check
Carburetor: clean
Fuel system
Fuel filter: clean
Fuel lines and connections: check
Impulse line [ to the membrane pump ]: check
Spark plugs
Clean spark plugs
Check gap of electrodes
Exhaust system
Check for damage and tight fit
Check exhaust pipe for residue
3.3 Replacement Parts
The parts listed in Table 3.3-1 should definitely be replaced after the specified number of
hours of operation. If signs of excessive wear appear before then, that particular part should
be replaced at that time.
25 h
50 h
100 h
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
500 h
X
X
X
X
X
X
X
X
X
X
X
19
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