6. DISASSEMBLY and REASSEMBLY
6-1 PREPARATIONS and SUGGESTIONS
1 ) Whendisassemblingengine,carefullynotemountingpositionsandmethodsofrespectivepartsinorderto beable to reassemble them correctly. Tag parts, if there is a possibility of confusion.
2 ) Prepare several boxes to keep parts belonging to respective groups together.
3 ) In order to prevent missing or misplacing, group related parts together, tentatively assembling them immediately after disassembling each
4 ) Carefully handle parts, and clean them with washing oil after disassembling.
5 ) Use correct tools in correct ways.
6 ) Standard tools to be prepared for disassembling.
a)Work Bench
b)' WashingPan
c)Disassembling Tools
d ) Washing Oil (KeroseneorGasoline),Mobile Oil e)EmeryPaper,Cloth
7 ) Drain fuel and oil without fail before disassembly.
To drainoil,unscrewtheoildrainpluglocatedonthesideofcrankcaseoncarburetorsidebyturningit
8 ) Clamp cylinder head, cylinder main bearing cover, connecting rod, spark plug, and flywheel with specified torque when reassembling them .
9 ) Replace all the packings and gaskets with new ones when reassembling.
I O ) Wash parts with new gasoline o r washing oil, and blow them with compressed air before reassembling. 1 1 ) Apply mobile oil to the rotating and sliding parts.
12)Be careful not to contaminate parts with dust during reassembling.
13)Tighten bolls, nuts, and screws to correct torque readings specified. I f small screws are tightened too strongly, they may be broken.
14) After reassembling, turn the moving parts by hand, and check them for signs of abnormal friction, noises, or looseness.
6-2 SPECIALTOOLS
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.. . ~"3
c""
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VALVE SPRING COMPRESSOR
Fig.