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CONTENTS
Section
Title
Page
1
.
SPECIFICATIONS
.......................................................................................................
1
2
.
PERFORMANCE
........................................................................................................
3
2-1 MAXIMUM OUTPUT
........................................................................................................
3
2-2
CONTINUOUS RATED OUTPUT
....................................................................................
3
2-3 MAXIMUM TORQUE
.......................................................................................................
3
2-4 PERFORMANCE CURVES
.............................................................................................
4
3
.
FEATURES
..................................................................................................................
6
4
.
GENERAL DESCRIPTION OF ENGINE COMPONENTS
..........................................
7
4-1 CYLINDER AND CRANKCASE
.......................................................................................
7
4-2 MAIN BEARING COVER
.................................................................................................
7
4-3 CRANKSHAFT
..................................................................................................................
7
4-4 CONNECTING ROD AND PISTON
.................................................................................
8
4-5 PISTON
RINGS
...............................................................................................................
8
4-6 CAMSHAFT
.....................................................................................................................
8
4-7 VALVE ARRANGEMENT
.................................................................................................
9
4-8 CYLINDER HEAD
............................................................................................................
9
4-9 GOVERNOR SYSTEM
....................................................................................................
9
4-10 COOLING SYSTEM
.....................................................................................................
10
4-11 LUBRICATION SYSTEM
..............................................................................................
10
4-12 IGNITION SYSTEM
.....................................................................................................
10
4-13 CARBURETOR
.............................................................................................................
11
4-14 AIR CLEANER
..............................................................................................................
11
4-1
5
BALANCER
...................................................................................................................
11
4-16 DECOMPRESSION SYSTEM
.....................................................................................
12
4-17 SECTIONAL VIEW OF ENGINE
..................................................................................
13
5
.
DISASSEMBLY AND REASSEMBLY
.......................................................................
15
5-1 PREPARATIONS AND SUGGESTIONS
........................................................................
15
5-2 SPECIALTOOLS
...........................................................................................................
15
5-3
DISASSEMBLY PROCEDURES
....................................................................................
16
5-4 REASSEMBLY PROCEDURES
.....................................................................................
31
5-5
BREAK-IN OPERATION
................................................................................................
43
6 .
MAGNETO
................................................................................................................
43
6-1
OPERATION AND FUNCTION
......................................................................................
43
6-2
BASIC THEORY
............................................................................................................
43
6-3
WIRING DIAGRAM
........................................................................................................
45