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MFS 25
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Tohatsu
MFS 25
Сервис Мануал Страница: 6

Tohatsu MFS 25 [6/319] Ignition syste

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25/30 2006

5 Ignition System ………………………… 4-20

(1)

Configuration of Ignition System

… 4-20

(2) Ignition Control ……………………… 4-21

1) Ignition Timing Controls …………………… 4-21

2) Ignition and Combustion Orders ………… 4-21

3) Ignition Timing ……………………………… 4-21

4) Operations…………………………………… 4-21

(3) Fuel Feed System …………………… 4-22

Components of Fuel Feed System

… 4-23

Fuel Pump (Low Pressure Mechanical Pump)

… 4-23

2) Vapor Separator …………………………… 4-23

3) Fuel Regulator ……………………………… 4-24

4) Fuel Cooler ………………………………… 4-24

Outline of Fuel Injection System

… 4-25

1) Air Intake System …………………………… 4-25

8 Inspection Items ……………………… 4-26

1) Inspection of Fuel Supply System Piping… 4-26

2) Inspection of Filter ………………………… 4-26

3) Inspection of Fuel Pump …………………… 4-28

4) Inspection of Fuel Connector ……………… 4-28

5) Measuring fuel pressure …………………… 4-29

6) Inspection of Fuel Regulator ……………… 4-30

7) Draining Fuel………………………………… 4-31

8) Disassembly of Vapor Separator ………… 4-31

9) Inspection of Vapor Separator …………… 4-32

10) Reassembly of Vapor Separator ………… 4-33

11) Inspection of ISC (Idle Speed Control) …… 4-33

12) Inspection of Idle Speed …………………… 4-33

5.Power Unit

1 Special Tools……………………………… 5-2

2 Parts Layout ……………………………… 5-3

Engine …………………………………………… 5-3

Recoil Starter …………………………………… 5-4

Magneto & ECU ………………………………… 5-5

Electric Parts …………………………………… 5-6

Fuel Pump, Fuel Rail, Vapor Separator ……… 5-8

Intake Manifold ………………………………… 5-11

Cam Shaft & Oil Pump ………………………… 5-12

Cylinder Head…………………………………… 5-13

Intake Valve & Exhaust Valve ………………… 5-14

Cylinder ………………………………………… 5-15

Piston & Crankshaft …………………………… 5-16

Top Cowl ………………………………………… 5-17

3 Inspection Items ……………………… 5-18

1) Inspection of Compression Pressure……… 5-18

2) Inspection of Oil Pressure ………………… 5-19

3) Inspection of Valve Clearance …………… 5-20

4) Removing Power Unit ……………………… 5-22

5) Removing Timing Belt and Pulley ………… 5-25

6) Inspection of Timing Belt …………………… 5-26

7) Installation of Pulley and Timing Belt……… 5-27

8) Removing Cylinder Head…………………… 5-30

9) Inspection of Valve Spring ………………… 5-32

10) Inspection of Valve ………………………… 5-33

11) Inspection of Valve Guide ………………… 5-33

12) Inspection of Valve Seat …………………… 5-34

13) Correction of Valve Seat …………………… 5-35

14)

Inspection of Rocker Arm and Rocker Arm Shaft

… 5-37

15) Inspection of Cam Shaft ……………… 5-38

16) Inspection of Cylinder Head …………… 5-39

17) Inspection of Oil Pump ………………… 5-40

18) Installation of Valves …………………… 5-41

19) Installation of Cam Shaft ……………… 5-42

20) Installation of Rocker Arm Shaft ……… 5-42

21) Installation of Oil Pump ………………… 5-43

22) Installation of Cylinder Head…………… 5-44

23) Disassembly of Cylinder Block………… 5-45

24) Inspection of Piston Outer Diameter … 5-46

25) Inspection of Cylinder Inner Diameter… 5-46

26) Inspection of Piston Clearance ……… 5-46

27)

Inspection of Piston Ring Side Clearance

… 5-47

28) Inspection of Piston Rings …………… 5-47

29) Inspection of Piston Pins ……………… 5-48

30)

Inspection of Connecting Rod Small End Inner Diameter

… 5-48

31)

Inspection of Connecting Rod Big End Side Clearance

… 5-48

32) Inspection of Crankshaft ……………… 5-49

33)

Inspection of Crank Pin Oil Clearance

… 5-50

34)

Inspection of Crank shaft Main Journal Oil Clearance

… 5-51

35)

Inner Diameter of Cylinder/Crank Case Bearing Holder (Inner Diameter Code)

… 5-52

36)

Thickness of Bearing (Color of Inner Diameter Code)

… 5-52

37)

Assembling Piston and Connecting Rod

… 5-53

38) Installation of Power Unit ……………… 5-57

39) Removing Recoil Starter ……………… 5-59

40) Disassembly of Recoil Starter ………… 5-59

41) Inspection of Recoil Starter …………… 5-60

42) Installation of Recoil Starter …………… 5-61

6.Lower Unit

1 Special Tools ………………………… 6-2

2 Parts Layout …………………………… 6-4

Gear Case …………………………………… 6-4

Drive System & Water Pump ……………… 6-5

Shift ………………………………………… 6-7

3 Inspection Items …………………… 6-8

1) Draining Gear Oil ……………………… 6-8

2) Removing Propeller …………………… 6-8

3) Removing Lower Unit ………………… 6-9

4) Disassembly of Water Pump ………… 6-9

5) Inspection of Water Pump……………… 6-10

Removing Propeller Shaft Housing Ass'y

… 6-10

7) Disassembly of Propeller Shaft Ass'y … 6-11

8) Inspection of Propeller Shaft ………… 6-11

9) Assembly of Propeller Shaft Ass'y …… 6-11

10)

Disassembly of Propeller Shaft Housing

… 6-12

11) Inspection of Propeller Shaft Housing… 6-13

12) Assembly of Propeller Shaft Housing … 6-14

13) Removing Pump Case (Lower) ……… 6-15

14) Disassembly of Pump Case (Lower) … 6-15

15) Assembly of Pump Case (Lower) …… 6-15

16) Removing Clutch Cam and Cam Rod… 6-15

17)

Disassembly of Clutch Cam and Cam Rod

… 6-15

18)

Inspection of Cam Rod and Clutch Cam

… 6-16

MFS25_30_ch00.qxd 06.3.10 2:33 PM ページ 4

Tohatsu MFS 25 [6/319] Ignition syste

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