Tohatsu MFS 6 B [35/81] Chapter 4 power unit

Содержание

• Outboard 1
• Service manual 1
• Tohatsu 1
• Chapter 1 specifications 2
• Chapter 2 service data and tools 2
• Chapter 3 inspection and maintenance 2
• Chapter 4 power unit 2
• Contents 2
• Chapter 10 optional parts 3
• Chapter 6 recoil starter 3
• Chapter 7 carburetor and fuel pump 3
• Chapter 8 electrical system 3
• Chapter 9 test run and inspection after complete assembly 3
• Chapters lower unit 3
• Contents 3
• Chapter 1 specifications 4
• Specifications 4
• Chapter 1 specifications 5
• Chapter 1 specifications 6
• Outline dimensions 6
• Chapter 2 service data and tools 7
• Service data and maintenance standards 7
• Chapter 2 service data and tools 8
• Chapter 2 service data and tools 9
• Chapter 2 service data and tools 10
• Chapter 2 service data and tools 11
• Chapter 2 service data and tools 12
• Chapter 2 service data and tools 13
• Table of points to apply sealants adhesives and lubricants 13
• Chapter 2 service data and tools 14
• Chapter 2 service data and tools 15
• Chapter 2 service data and tools 16
• Table of tightening torque 16
• Chapter 2 service data and tools 17
• Disassembly and repair 17
• Tools and instruments required for 17
• Chapter 2 service data and tools 18
• Chapter 2 service data and tools 19
• How to use special tools 19
• Chapter 2 service data and tools 20
• Chapter 2 service data and tools 21
• Chapter 3 inspection and maintenance 22
• O o o o 22
• O o o o o 22
• O o o o o o 22
• Periodical inspections 22
• Chapter 3 inspection and maintenance 24
• Change of engine oil 25
• Change of gear oil 25
• Chapter 3 inspection and maintenance 25
• A caution 26
• Chapter 3 inspection and maintenance 26
• Inspection of ignition system 26
• Chapter 3 inspection and maintenance 27
• Inspection of fuel system 27
• A caution 28
• Chapter 3 inspection and maintenance 28
• Inspection of compression system 28
• A caution 29
• Chapter 3 inspection and maintenance 29
• Inspection of gear shift and propeller 29
• System 29
• Chapter 3 inspection and maintenance 30
• Inspection of cooling system 30
• Chapter 4 power unit 31
• General notes on service 31
• Chapter 4 power unit 32
• Removing parts 32
• Removing power unit 32
• Chapter 4 power unit 33
• Chapter 4 power unit 34
• Disassembling engine 34
• Chapter 4 power unit 35
• Chapter 4 power unit 36
• Chapter 4 power unit 37
• Chapter 4 power unit 38
• Engine parts 38
• Inspection and measurement of 38
• Chapter 4 power unit 39
• Chapter 4 power unit 40
• Chapter 4 power unit 41
• Chapter 4 power unit 42
• Chapter 4 power unit 43
• Chapter 4 power unit 44
• Chapter 4 power unit 45
• Repair and replacement of engine 45
• Chapter 4 power unit 46
• Reassembling engine 46
• Chapters lower unit 47
• Disassembling gear case 47
• Chapters lower unit 48
• Chapters lower unit 49
• Chapters lower unit 50
• Inspection of parts related to gear case 50
• Chapters lower unit 51
• Reassembling gear case 51
• Chapters lower unit 52
• Chapters lower unit 54
• Gear shift 54
• Chapters lower unit 55
• Gear case shaft water pump 55
• And drive shaft housing 56
• Chapters lower unit 56
• Disassembling lower motor cover 56
• Chapters lower unit 57
• And drive shaft housing 58
• Chapters lower unit 58
• Reassembling lower motor cover 58
• Chapters lower unit 59
• Drive shaft housing gear case motor 59
• Bracket reverse lock 60
• Chapters lower unit 60
• Chapters lower unit 61
• Handle and throttle 61
• Chapters lower unit 62
• Installation and adjustment of throttle 62
• Chapters recoil starter 63
• Disassembling 63
• Reassembling 63
• Chapters recoil starter 64
• Recoil starter starter lock 64
• A caution 65
• Carburetor 65
• Chapter carburetor and fuel pump 65
• A caution 66
• Chapter 7 carburetor and fuel pump 66
• Fuel pump 66
• Chapter 8 electrical system 67
• Electric circuit 67
• Inspection 67
• Chapter 8 electrical system 68
• Chapter 8 electrical system 69
• Magneto 69
• Chapter 9 test run and inspection after complete assembly 70
• Inspection 70
• Test run tank and test propeller 70
• Chapter 9 test run and inspection after complete assembly 71
• Chapter 10 optional parts 72
• Remote control system 5a2 6a2 72
• Chapter 10 optional parts 73
• Assembling remoe control parts 5a2 6a2 75
• Chapter 10 optional parts 75
• Chapter 10 optional parts 76
• Chapter 10 optional parts 77
• Lighting coil and rectifier kit 77
• Chapter 10 optional parts 78
• Chapter 10 optional parts 79
• Chapter 10 optional parts 80
• Vertical starter kit 80
• Tohatsu corporation 81

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CHAPTER 4 POWER UNIT 1 Cylinder head valves and relating parts No Part name Check point etc Gasket O ring Note Must be replaced by new parts whenever they are once removed for disassembling 1 Cylinder head Carbon deposit in combustion chamber Surface width and roughness between valve seat and valve 2 Intake valve Exhaust valve Surface width and roughness between seat and intake exhaust valve Carbon deposit 3 Push rod Wear of both ends and straightness 4 Push rod plate Wear of guide 5 Rocker arm Wear of four contact points contact surface with push rod valve stem pivot and center hole 6 Valve lifter Note Must be fitted to the push rod just before reassembling cam shaft in order to prevent it from falling down Cylinder head cover Head cover gasket Pivot adjusting nut H890 2 24 26N m 9 11N m Pitch 0 5 mm 4 Push rod plate Pivot 1 Cylinder head Rocker arm 2 Intake valve Cotter Head diameter 25 mm Valve spring retainer Valve spring Cylinder head gasket Valve spring seat Pivot bolt Spark plug Push rod Valve lifter H860 2 I 24 26N m Exhaust valve Head diameter 24 mm 32 24 26N m