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e-mail: [email protected]  •  www.robinamerica.com

RS 307 - REVISED

May, 2001

PURPOSE:

• To improve engine reliability, better sealing of governor shaft

• To renew engine design and color

• Reduction of oil consumption, and asbestos-free gasket to comply with emission regulations.

• To reduce engine noise.

DETAIL OF THE CHANGE:

Refer to pages 5 - 23

CHANGE OF PART NUMBERS AND INTERCHANGEABILITY:

Refer to pages 20-23

EXECUTION:

This change has been applied from June 2001 production.

The starting serial numbers are: EY15-3 ; #6000001

                                            EY20-3 ; #6000001

MODEL                                                         SUBJECT

EY15-3, EY20-3

SERVICE  BULLETIN

Model change of EY15 and EY20

Summary of Contents for EY15-3

Page 1: ...nsumption and asbestos free gasket to comply with emission regulations To reduce engine noise DETAIL OF THE CHANGE Refer to pages 5 23 CHANGE OF PART NUMBERS AND INTERCHANGEABILITY Refer to pages 20 23 EXECUTION This change has been applied from June 2001 production The starting serial numbers are EY15 3 6000001 EY20 3 6000001 MODEL SUBJECT EY15 3 EY20 3 SERVICE BULLETIN Model change of EY15 and E...

Page 2: ... 2 DETAIL OF THE CHANGE 1 ENGINE DIMENSION 1 EY15 3 STD specification After the Change Before the Change ...

Page 3: ... 3 2 EY15 3 Generator and Pump specification DETAIL OF THE CHANGE After the Change Before the Change ...

Page 4: ... 4 DETAIL OF THE CHANGE Before the Change After the Change 3 EY20 3 STD specification ...

Page 5: ... 5 DETAIL OF THE CHANGE 2 CRANKCASE 1 The oil seal will be added in the hole for governor shaft After the Change Before the Change ...

Page 6: ...seat will be changed EY20 3 3 The material of exhaust valve seat will be changed EY15 3 EY20 3 4 The ball bearing will be changed 5 The Valve guide will be changed 6 The boss to install the exciter coil will be eliminated After the Change Before the Change ...

Page 7: ...e NOTE When repairing the engine wipe off oil and clean the contact surface of crankcase and cylinder head 5 GASKET TAPPET COVER 6 GASKET BREATHER PLATE The materials will be changed to asbestos free materials 7 CRANKSHAFT Material will be changed 8 PISTON The piston shape will be changed After the Change Before the Change After the Change Before the Change ...

Page 8: ...l ring will be changed 11 CAMSHAFT The material will be changed 12 INTAKE VALVE The distinction mark on vlalve surfaces will be elinimated 13 EXHAUST VALVE The distinction mark on valve surface will be eliminated After the Change Before the Change After the Change Before the Change After the Change Before the Change ...

Page 9: ...ANGE 14 MUFFLER The muffler shape will be changed from cylinder type to the square type The direc tion of exhaust outlet will be changed from 45 degree to 0 degree parallel with the PTO After the Change Before the Change ...

Page 10: ...hange of muffler cover shape will be accompanied with the muffler change NOTE After the change of the muffler and muffler cover the optional parts exhaust deflector and spark arrestor can be installed in the field After the Change Before the Change ...

Page 11: ...air cleaner will be changed 18 GASKET INSULATOR The material will be changed to asbestos free material graphite 19 GOVERNOR LEVER The bending angle of the governor lever will be changed to secure a clearance between the fuel pipe and the governor lever 20 BLOWER HOUSING 1 The welding point on the guide plate will be changed 21 LABEL Model The design and form will be changed After the Change Before...

Page 12: ...TD specification the recoil starter shape will be changed Note The pitch of mounting holes will not be changed After the Change Before the Change After the Change A B C EY15 3D 35 5 20 8 45 EY20 3D á á á After the Change A B C EY15D 45 33 30 EY20D 51 39 á ...

Page 13: ... 13 After the Change Before the Change DETAIL OF THE CHANGE 2 For pump and generator specifications the material of the recoils starter will be changed from sheet metal to resin ...

Page 14: ...irection of starter knob will be unified as follows Direction H is unified in Direction A Direction B is unified in Direction C Direction D is unified in Direction E Direction F is unified in Direction G After the Change Before the Change ...

Page 15: ... Trademark The new label will be on the recoil starter 24 LABEL Engine Name The model name will be changed 25 LABEL Caution The safety caution label will be changed After the Change Before the Change After the Change Before the Change ...

Page 16: ...ial of the outside cap will be changed from sheet metal to resin 27 FUEL PIPE The fuel pipe between the fuel strainer and carburetor will be changed from straight type to molded type After the Change Before the Change After the Change Before the Change ...

Page 17: ...anged from L shape pipe to straight pipe Note Distinction mark for STD carburetor 1533010 EY15 3D 156030 EY15D 203110 EY20 3D 203011 EY20D 29 OIL GAUGE Oil gauge will be changed After the Change Before the Change Note This illustration shows the carburetor for the EY15 3D ...

Page 18: ...fixing nut from flywheel 2 Remove the starter pulley 3 Temporally assemble the fixing nut to the crankshaft thread until the end face 4 Tap the fixing nut with a plastic ham mer to remove the flywheel a Do not tap directly with a steel hammer b Be careful not to damage the thread portion when using a steel hammer Tap the fixing nut after inserting aluminum bar between the fixing nut and a steel ha...

Page 19: ...AIL OF THE CHANGE 2 IGNITION COIL The shape of the ignition coil will be changed 1 EY15 3 2 EY20 3 31 SWITCH AY The switch will be changed After the Change Before the Change After the Change Before the Change ...

Page 20: ...26 20201 51 1 Piston 281 23401 03 1 226 23411 03 1 Camshaft 281 31701 03 1 226 31701 13 1 Intake Valve 281 33401 03 1 226 33401 03 1 Exhaust Valve 281 33501 03 1 226 33501 13 1 Muffler 281 30101 H1 1 226 30101 01 1 Muffler Cover 281 34201 H1 1 226 34201 11 1 Gasket exhaust 281 35201 H1 1 226 35201 01 1 Air Cleaner AY 282 32601 H0 1 227 32603 00 1 Gasket 282 35901 03 1 227 35901 03 1 Governor Lever...

Page 21: ... 00 1 226 62360 30 1 Oil Gauge 282 63601 H1 2 Incl 35 36 Oil Gauge 282 63601 H3 2 269 63601 03 2 Gasket X21 31600 20 2 021 31600 20 2 For Oil gauge Flywheel 281 79201 01 1 226 79230 01 1 Ignition Coil 281 79401 01 1 226 79430 51 1 Switch X66 00003 61 1 066 00003 61 1 Recoil Starter 281 50311 00 1 226 50711 20 1 Pump Generator Flange Bolt 011 00600 20 4 011 00600 10 4 RecoilStarter CHANGE OF PART N...

Page 22: ...1 51 1 Piston 282 23401 03 1 227 23401 03 1 Top Ring 282 23501 03 1 227 23601 03 1 Oil Ring 282 23901 03 1 227 23921 23 1 Camshaft 282 31701 03 1 227 31701 03 1 Intake Valve 282 33401 03 1 227 33401 03 1 Exhaust Valve 282 33501 03 1 227 33501 03 1 Muffler 282 30101 H1 1 227 30101 01 1 Muffler Cover 282 34201 H1 1 227 34201 11 1 Gasket exhaust 282 35201 H1 1 214 35201 11 1 Air Cleaner 282 32601 H0 ...

Page 23: ...20 1 073 20047 20 1 Fuel Tank Cap 043 04301 00 1 043 04300 15 1 Fuel Pipe 282 62601 H1 1 227 62640 01 1 Rubber Pipe 282 62601 H3 1 085 10609 50 1 Hose Clamp X56 11100 20 2 056 11100 20 2 Carburetor 227 62311 00 1 227 62301 10 1 Oil Gauge Cp 282 63601 H1 2 Incl 39 40 Oil Gauge 282 63601 H3 2 269 63601 03 2 Gasket X21 31600 20 2 021 61600 20 2 Flywheel 282 79201 01 1 226 79230 01 1 Ignition Coil 282...

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