1
CONTENTS
DRAWING
Chapter one: Engine technical data and specification……………………………….………..2
1.1
Engine technical data and specification……………………………………………………2
1.2
Petrol Engine External Character Curve…………………………………………………....5
Chapter two: Engine operation……………………………………………………….………..6
2.1
Points for attention in engine operation……………………………………………6
2.2
Running-in of new engine………………………………………………………..6
2.3
Staring, Running and turning off engine…………………………………………...6
Chapter Three: Structural characteristics and assembly requirements of engine ……….8
3.1
Cylinder head assembly……………………….……………………………………………8
3.2
Cylinder block assembly and balance chain………………………………………………9
3.3
Crankshaft and main shaft bearing……………..…………………..………………….11
3.4
Piston and connecting rod assembly……………………………………...……………….12
3.5
Distributor assembly……………………………….………………………………..…….15
3.6
Carburetor assembly…………………………………………..…………………….…….16
3.7
Lubrication system………………………………………………………………………16
3.8
Cooling system……………………….…………………………………………..………..16
3.9
Electrical system…………………………………..……………………………..………..16
3.10
Clutch assembly and transmission assembly……………………………………..……….17
3.11
Engine leakage prevention……………………………………………………..…………18
Chapter Four: Engine maintenance…………………………………………………………..19
4.1 Engine maintenance cycle……………………………………..………………………….19
4.2 Point of attention for engine maintenance………………………………………………20
Chapter Five: Engine main troubles and remedies…………………………….…………….24
Appendix A: Fit Clearances of Main Components………………………..……………………27
Appendix B: Tightening Torque………………………………….…………………………….28
Appendix C: Sealing Surfaces and Sealant……………………………………………………29
