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MFS 8 S
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Tohatsu MFS 8 S [3/84] Chapter 7 carburetor and fuel pump

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

Tohatsu MFS 8 S [3/84] Chapter 7 carburetor and fuel pump

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