CONTENTS
Section Title Page
1
.SPECIFICATIONS.
.....................................................................................
2.PERFORMANCE
........................................................................................
2-1
Maximum
Output
...............................................................................
2-2
Continuous Rated Output
..................................................................
1
3
3
3
2-3
~~~i~~~
T~~~~~
...............................................................................
3
2-4
performance
curves
...........................................................................
4
3.FEATURES
................................................................................................
6
4.GENERAL DESCRIPTION OF ENGINE COMPONENTS
.........................
6
6
6
7
7
8
8
4-7
Valve Arrangement
.............................................................................
8
8
9
4-
10
Cooling Syst ern
..................................................................................
9
9
10
10
10
11
11
12
14
14
14
15
32
42
6.MAGNETO
.................................................................................................
42
42
43
44
7.
AUTOMATIC DECOMPRESSlON SYSTEM
............................................
45
8.CARBURETOR.
..........................................................................................
46
46
47
4-
1
Cylinder And Crankcase
.....................................................................
4-2
Main Bearing Cover
...........................................................................
4-3
Crankshaft
.........................................................................................
4-4
Connecting
Rod
And
piston
..............................................................
4-5
Piston Rings
......................................................................................
4-6
Camshaft
...........................................................................................
4-8
Cylinder Head
....................................................................................
4-9
Governor System
...............................................................................
4-
1
1
Lubrication
.........................................................................................
4-
12
Ignition
System
.................................................................................
4-
13
Carburetor
.........................................................................................
4-
14
Air Cleaner
........................................................................................
4-
15
Balancers
...........................................................................................
4-
16
Decompression System
.....................................................................
4-
17
Sectional View
Of
Engine
..................................................................
5.DISASSEMBLY AND REASSEMBLY
......................................................
5-
1
Preparations
And
Suggestions
...........................................................
5-2
Special Tools
.....................................................................................
5-3
Disassembly Procedures
.....................................................................
5-4
Reassembly Procedures
......................................................................
5-5
Break-in Operation
............................................................................
6-
1
Flywheel Magneto
..............................................................................
6-2
Basic Theory
......................................................................................
6-3
Wiring Diagram
..................................................................................
8-
1
Operation And Construction
..............................................................
8-2
Disassembly And Reassembly
............................................................