Tohatsu MFS 9.8 A3 — обслуживание и замена деталей цилиндров и клапанов [39/84]

Содержание

• Top page p.1
• Chapter 1 specifications p.2
• Chapter 4 power unit p.2
• Chapter 2 service data and tools p.2
• Chapter 3 inspection and maintenance p.2
• Contents p.2
• Chapter 7 carburetor and fuel pump p.3
• Chapter 5 lower unit p.3
• Chapter 9 electrical system p.3
• Chapter 8 oil pump p.3
• Chapter 9 test run and inspection p.3
• Chapter 6 recoil starter p.3
• Contents p.3
• Specifications p.4
• Engine p.4
• Type 8a 9 a p.4
• Item model or p.4
• Performance p.4
• Dimensions p.4
• Chapter 1 specifications p.4
• Warning systems p.5
• Type 8a 9 a p.5
• Specifications p.5
• Lower unit p.5
• Item model or p.5
• Chapter 1 specifications p.5
• Dimensions p.6
• Chapter 1 specifications p.6
• Chapter 2 service data and tools p.7
• Service data and maintenance standards p.7
• Chapter 2 service data and tools p.8
• Chapter 2 service data and tools p.9
• Chapter 2 service data and tools p.10
• Chapter 2 service data and tools p.11
• Chapter 2 service data and tools p.12
• Chapter 2 service data and tools p.13
• Chapter 2 service data and tools p.14
• Table of points to apply sealants adhesives and lubricants p.15
• Chapter 2 service data and tools p.15
• Chapter 2 service data and tools p.16
• Chapter 2 service data and tools p.17
• Engine p.18
• Tightening torque p.18
• Table of tightening torque p.18
• N m kg m lb ft p.18
• Standard torque p.18
• Lower unit p.18
• Description bolt or nut thread p.18
• Chapter 2 service data and tools p.18
• 1 general tools p.19
• Chapter 2 service data and tools p.19
• Tools and instruments required for disassembly and repair p.19
• Tools and instruments required for p.19
• Disassembly and repair p.19
• Chapter 2 service data and tools p.20
• How to use special tools p.21
• Chapter 2 service data and tools p.21
• Chapter 2 service data and tools p.22
• Drive shaft bearing tool 3b2 72256 0 p.23
• Chapter 2 service data and tools p.23
• Chapter 2 service data and tools p.24
• Backlash measuring tool p.24
• Periodical inspections p.25
• O o o o p.25
• Chapter 3 inspection and maintenance p.25
• Troubleshooting p.26
• Change of engine oil p.27
• Method to change engine oil p.27
• Chapter 3 inspection and maintenance p.27
• Inspection of fuel system p.28
• Chapter 3 inspection and maintenance p.28
• Compression test p.29
• Chapter 3 inspection and maintenance p.29
• A caution p.29
• Chapter 3 inspection and maintenance p.30
• Inspection of timing belt p.31
• Chapter 3 inspection and maintenance p.31
• Chapter 3 inspection and maintenance p.32
• Change of gear oil p.32
• Flushing cleaning p.33
• Chapter 3 inspection and maintenance p.33
• A caution p.33
• Chapter 3 inspection and maintenance p.34
• Inspection of cooling system p.34
• General notes on service p.35
• Chapter 4 power unit p.35
• Removing parts p.36
• Removing power unit removing parts p.36
• Removing power unit p.36
• Chapter 4 power unit p.36
• Chapter 4 power unit p.37
• Disassembling engine p.38
• Chapter 4 power unit p.38
• Chapter 4 power unit p.39
• Chapter 4 power unit p.40
• Chapter 4 power unit p.41
• Inspection and measurement of p.42
• Engine parts p.42
• Chapter 4 power unit p.42
• Inspection and measurement of engine parts p.42
• Chapter 4 power unit p.43
• Chapter 4 power unit p.44
• Chapter 4 power unit p.45
• Chapter 4 power unit p.46
• Chapter 4 power unit p.47
• Chapter 4 power unit p.48
• Chapter 4 power unit p.49
• Repair and replacement of engine parts p.50
• Repair and replacement of engine p.50
• Chapter 4 power unit p.50
• Reassembling engine p.51
• Chapter 4 power unit p.51
• Chapter 4 power unit p.52
• Chapter 4 power unit p.53
• Chapter 4 power unit p.54
• Chapter 4 power unit p.55
• Chapter 4 power unit p.57
• Chapter 4 power unit p.58
• Chapter 4 power unit p.59
• Chapter 4 power unit p.60
• Chapter 5 lower unit p.61
• Disassembly of gear case p.61
• Disassembly of water pump case p.63
• Disassembly of propeller shaft and clutch p.63
• Chapters lower unit p.63
• Removal of cam rod drive shaft and bevel gear p.64
• Chapter 5 lower unit p.64
• Chapters lower unit p.65
• Installation of bevel gear and driveshaft p.66
• Gear case assembly p.66
• Chapters lower unit p.66
• Installation of clutch cam and cam rod p.66
• Chapters lower unit p.67
• Assembly of water pump case p.67
• Chapters lower unit p.68
• Assembly of propeller shaft and clutch p.68
• Standards for oil seals and o rings for gear case p.69
• Installation of gear case p.69
• Chapter 5 lower unit p.69
• Chapter 6 recoil starter p.71
• Recoil starter starter lock p.71
• Chapters recoil starter p.71
• Reassembling p.72
• Disassembling p.72
• Chapters recoil starter p.72
• Inspection p.73
• Chapters recoil starter p.73
• Chapter 7 carburetor and fuel pump p.74
• Carburetor p.74
• A caution p.74
• Fuel pump p.75
• Chapter 7 carburetor and fuel pump p.75
• A caution p.75
• Chapter 8 oil pump p.76
• Component parts p.76
• Chapter 9 electrical system p.77
• Rec reg p.77
• Or orange p.77
• Note including optional parts in the diagram p.77
• Mf type p.77
• Lg____lg p.77
• Lg b r r w w r p.77
• Ef type p.77
• В black lue rown reen p.77
• В black l blue bt brown g green grange p.77
• Wiring diagram p.77
• Br w brown with white tracer p.77
• Wire caldr p.77
• White yellow light green black with red tracer red with white tracer white with red tracer p.77
• White yellow light green black with red p.77
• W r w r p.77
• W r v r p.77
• Tracer p.77
• Red with white tracer white with red tracer p.77
• Inspection p.78
• Ep type p.78
• Chapter 9 electrical system p.78
• Condition of the above measurement hioki 3030 tester was used with the measurement range of 1 kq p.79
• Chapter 9 electrical system p.79
• Before measuring the item marked with con make a shortcircuit between the ignition terminal and earth terminal p.79
• After the tester pointer shakes once p.79
• Tolerance of resistance 20 p.79
• The values shown in the above table are just standards and it is impossible to check each value accurately p.79
• Tester s positive terminals p.79
• Tester s negative terminals p.79
• Since the value marked with con is the capacitor characteristic the tester reads a stable value shown in parentheses p.79
• Oo marked with con indicates a minute value because the tester pointer shakes a little for this item p.79
• Chapter 9 electrical system p.80
• Chapter 9 electrical system p.81
• Ф c d unit 2 rectifier fuse cord chock solenoid starter solenoid stop switch p.81
• Ep type cable harness wiring diagram p.81
• Test tank and test propeller p.82
• Inspection p.82
• Chapter 10 test run and inspection p.82
• Idle speed and stable idling p.83
• On the lamp goes on when the lead wire of the oil pressure switch is grounded to the body p.83
• Additional tightening after test run p.83
• On off operation of the engine oil warning lamp p.83
• Off the lamp goes out as the engine starts p.83
• Note perform a break in of the engine according to the following standards p.83
• Items to be checked during test run p.83
• Inlet exhaust valve etc is replaced perform a break in of the engine for fitting the sliding surfaces p.83
• Fuel leak from parts joined spots of the engine p.83
• Extraordinary noise p.83
• Engine speed at acceleration and deceleration p.83
• Cooling water discharge condition cooling water must vigorously be discharged from the water inspection p.83
• While idling the engine check the following items p.83
• Cooling water and or oil leak from parts joined spots of the engine p.83
• When any of the piston piston ring piston pin crank shaft connecting rod cylinder cam shaft rocker arm p.83
• Check the tightening condition of respective bolts and nuts after test run and additionally tighten them with the p.83
• Specified tightening torque p.83
• Chapter 10 test run and inspection p.83
• Operation of the stop switch p.83
• Break in period 10 hours p.83
• Operation of the clutch p.83
• Break in p.83
• Tomatsu corporation p.84
• Back cover p.84

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CHAPTER 4 POWER UNIT 1 Cylinder head valves and relating parts No Check point etc Part name 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 Scratch or distortion 2 Intake valve Exhaust valve Surface width and roughness between valve seat and intake exhaust valve Carbon deposit 3 Valve stem seal IN Valve stem seal EX Black color Wear of contact surface with valve stem Green color Wear of contact surface with valve stem 4 Valve spring Weekness 5 Rocker arm Wear of two contact points contact surface with cam and rocker arm shaft 6 Rocker arm shaft Wear of contact surface with rocker arm Valve clearance adjusting screw Rock nut 6 8N m 5 6lb ft Cover Cylinder head 5 Rocker arm Cotter 4 Valve spring Gasket 3 Valve stem seal IN Black color E Oll 4625 4 8 10N m 6 7lb ft 1 Cylinder head 2 Intake valve Head diameter 24mm H850 6 28 30N m 20 22lb ft Cylinder head Gasket Spark plug H625 3 8 10N m 6 7lb ft 3 Valve stem seal EX Green color 2 Exhauts valve Head diameter 21mm 6 Rocker arm shaft 36

Узнайте, как правильно обслуживать цилиндры и клапаны, включая замену прокладок и уплотнителей. Подробные рекомендации по проверке и замене деталей.