Robin EY20 Service Manual

CONTENTS
Section Title
Page
1 . SPECIFICATIONS ...........................................
2 . PERFORMANCE ...........................................
2- 1 Maximum Output .......................................
2-2 Continuous Rated Output .................................
2-3 Maximum Torque .......................................
3 . FEATURES ...............................................
4 . GENERAL DESCRIPTION of ENGINE CONSTRUCTION ...............
4- 1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-1
1
4-12
4-
13
4-14
Cylinder. Crankcase .....................................
Main Bearing Cover ......................................
Crankshaft ...........................................
Connecting Rod and Piston ................................
Camshaft ............................................
Valve Arrangement ......................................
Cylinder Head .........................................
Governor ............................................
Cooling ..............................................
Lubrication ...........................................
Ignition .............................................
Carburetor ...........................................
Air Cleaner ...........................................
Sectional View of Engine ..................................
5 . DISASSEMBLY and REASSEMBLY ...............................
5-1 Preparation and Suggestion .................................
5-2 Special Tools ..........................................
5-3 Haw To Disassemble .....................................
5-4 How To Reassemble .....................................
6 . MAGNETO ...............................................
6-1 Magneto .............................................
6-2 Breaker Point Adjustment .................................
6-3 Timing Adjustment for EY15. EY20 Point Type Ignition System ........
6-4 Magneto Trouble Shooting .................................
6-5 Solid State Ignition ......................................
7 . GOVERNOR ADJUSTMENT ...................................
8 . CARBURETOR ............................................
8- 1 Operation and Construation ................................
8-2 Disassembly and Reassembly ...............................
9 . BREAK-IN OPERATION Of REASSEMBLED ENGINE ................
1
3
4
4
4
5
5
6
6
7
7
8
8
8
9
9
10
18
18
18
20
27
37
37
37
38
39
39
40
42
42
43
45

Robin EY20 Specifications

General

Ignition System	Transistorized magneto
Starting System	Recoil starter
Fuel	Unleaded gasoline
Oil Capacity	0.6 liters
Displacement	183 cc
Bore x Stroke	67 x 52 mm
Dry Weight	15 kg