CONTENTS
Section Title Page
1. SPECIFICATIONS ....................................................................................................... 1
2. PERFORMANCE ........................................................................................................ 2
2-1 MAXIMUM OUTPUT ........................................................................................................ 2
2-2 CONTINUOUS RATED OUTPUT .................................................................................... 2
2-3 MAXIMUM TORQUE ....................................................................................................... 2
2-4 PERFORMANCE CURVES ............................................................................................. 3
3. FEATURES (compared with former models) ........................................................... 5
4. GENERAL DESCRIPTION OF ENGINE COMPONENTS .......................................... 6
4-1 CYLINDER AND CRANKCASE ....................................................................................... 6
4-2 MAIN BEARING COVER ................................................................................................. 6
4-3 CRANKSHAFT ................................................................................................................. 6
4-4 CONNECTING ROD AND PISTON ................................................................................. 7
4-5 CAMSHAFT ..................................................................................................................... 7
4-6 VALVE ARRANGEMENT ................................................................................................. 7
4-7 CYLINDER HEAD ............................................................................................................ 8
4-8 GOVERNOR SYSTEM .................................................................................................... 8
4-9 COOLING SYSTEM ......................................................................................................... 8
4-10 LUBRICATION SYSTEM ............................................................................................... 8
4-11 IGNITION SYSTEM ........................................................................................................ 9
4-12 CARBURETOR .............................................................................................................. 9
4-13 AIR CLEANER ............................................................................................................... 9
4-14 SECTIONAL VIEW OF ENGINE .................................................................................. 10
5. DISASSEMBLY AND REASSEMBLY ....................................................................... 12
5-1 PREPARATIONS AND SUGGESTIONS ........................................................................ 12
5-2 SPECIAL TOOLS ........................................................................................................... 12
5-3 DISASSEMBLY PROCEDURES .................................................................................... 13
5-4 REASSEMBLY PROCEDURES ..................................................................................... 20
5-5 BREAK-IN OPERATION OF REASSEMBLED ENGINE ............................................... 27
6. GOVERNER ADJUSTMENT ..................................................................................... 28
7. CARBURETOR ......................................................................................................... 30
7-1 OPERATION AND CONSTRUCTION ............................................................................ 30
7-2 DISASSEMBLY AND REASSEMBLY ............................................................................ 31
8. MAGNETO ................................................................................................................ 33
8-1 FEATURES .................................................................................................................... 33
8-2 BASIC PRINCIPLE OF U.T.C.I. ..................................................................................... 33
8-3 MAGNETO TROUBLESHOOTING ................................................................................ 34
Содержание EY15-3
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