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73-10 Fuel supply       
73-10 1) Visually inspect the mechanical fuel pump. 100  X X  0 NOTE 1
 Check attach fittings and connections on the engine pump and the pressure switch.       
73-10 2) Check the fuel pump vent line for clogging. 100      
73-10 3) Visually inspect the fuel hoses for condition, attachment and routing. Look for evidence of wear and interference. 100     X 
73-10 4) Visually inspect the flow distributor. 100  X X  0 NOTE 1
73-10 5) Remove, clean, visually inspect and
reinstall the fuel injector nozzles - refer to 73-10-02 201. 100      
73-10 6) Check the fuel injector nozzles for
looseness - refer to 73-10-02 201. 100   X  0 NOTE 1
73-10 7) Check for discoloration at the fuel injector nozzles (evidence of leak) and check the lines for attachment - refer to 73-10-02 201 and the latest issue of LYCOMING Service 100   X  0 NOTE 1
 Bulletin No. 342.       

NOTE 1 : If a 100-hr. inspection has been carried out during the last 3 months, do not perform the operations identified with a "0" unless the annual inspection replaces a 100-hr. inspection. For US registered aircraft, perform all operations.
AHAA
Validity : S / N 1 - 9999 05 20 01Page 241
(IN JUN 01
 

ATA OPERATIONS Area INSPECTIONS
   1st
25 hrs 50
hrs 100
hrs Major Ann. Other
73-20 Fuel control       
73-20 1) Perform an overhaul of the injection pump. 100    X X Associated
with
engine
overhaul
73-20 2) Visually inspect the injection pump, attach fittings and check for leaks. 100    X X 
73-20 3) Remove and clean the injection pump fuel supply filter. 100  X X X 0 NOTE 1
 Install the filter - refer to 73-20-01 301.       
73-30 Indicating       
73-30 S / N 731 - 9999 200    X X 
 1) Visually inspect the fuel flow totalizer sensor under the cabin floor (if installed), check the unions and connections for condition.       
73-30 S/ N 1- 730 100    X X 
 2) Visually inspect the fuel flow totalizer sensor on the engine mount (if installed), check the unions and connectors for condition.       
　
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