TOHATSU MFS 2 Service Manual

5
5
Power Unit
1 Special Tools ……………………………… 5-2
2 Parts Layout………………………………… 5-3
Engine ………………………………………… 5-3
Recoil Starter ………………………………… 5-4
Oil Pan ………………………………………… 5-5
Cylinder ………………………………………… 5-6
Cam Shaft & Valve …………………………… 5-7
Piston & Crank Shaft ………………………… 5-8
3 Inspection Items ………………………… 5-9
1) Inspection of Compression Pressure … 5-9
2) Inspection of Valve Clearance ………… 5-10
3) Removing Power Unit …………………… 5-12
4)
Removal and Disassembly of Crank Case Head … 5-13
5) Inspection of Crank Case Head ………… 5-14
6) Assembly of Crank Case Head ………… 5-14
7) Installation of Crank Case Head ……… 5-14
8) Disassembly of Power Unit ……………… 5-15
9) Removal of Rocker Arm ………………… 5-17
10) Inspection of Rocker Arm and Pivot …… 5-18
11) Inspection of Push Rod Plate …………… 5-18
12) Inspection of Push Rod ………………… 5-18
13) Disassembly of Cylinder Block ………… 5-19
14)
Inspection of Slinger (Splash Lubrication) … 5-20
15) Inspection of Lifter ……………………… 5-20
16) Inspection of Cam Shaft ………………… 5-21
17) Inspection of Piston Outer Diameter …… 5-22
18) Inspection of Cylinder Inner Diameter … 5-22
19) Inspection of Piston Clearance ………… 5-22
20) Inspection of Piston Ring Side Clearance … 5-23
21) Inspection of Piston Rings ……………… 5-23
22) Inspection of Piston Pin ………………… 5-24
23)
Inspection Connecting Rod Small End Inner Diameter
… 5-24
24)
Inspection of Connecting Rod Big End Inner Diameter
… 5-24
25)
Inspection of Connecting Rod Big End Side Clearance
… 5-25
26) Inspection of Crank Shaft ……………… 5-25
27)
Disassembly and Assembly of Crank Shaft … 5-26
28) Inspection of Crank Pin Oil Clearance … 5-27
29) Installation of Piston and Connecting Rod … 5-28
30) Removal of Valves and Springs ………… 5-29
31) Inspection of Valve Springs …………… 5-29
32) Inspection of Valve ……………………… 5-30
33) Inspection of Valve Guide ……………… 5-30
34) Inspection of Valve Seat ………………… 5-31
35) Correction of Valve Seat ………………… 5-32
36) Installation of Valves …………………… 5-35
37) Assembly of Cylinder and Crank Case … 5-36
38) Assembly to Power Unit ………………… 5-39
39) Assembly of Rocker Arm………………… 5-40
40) Assembly of Power Unit ………………… 5-41
41) Disassembly of Recoil Starter ………… 5-42
42) Inspection of Recoil Starter……………… 5-42
43) Assembly of Recoil Starter ……………… 5-43
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TOHATSU MFS 2 Specifications

General

Brand	TOHATSU
Model	MFS 2
Category	Engine
Language	English