Robin America EY15-3 Service Bulletin
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Robin America EY15-3 Service Bulletin

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MODEL
EY15-3, EY20-3
•
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
e-mail: sales@robinamerica.com • www.robinamerica.com
SERVICE BULLETIN
EY20-3 ; #6000001
SUBJECT
Model change of EY15 and EY20
- 1 -
RS 307 - REVISED
May, 2001

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Summary of Contents for Robin America EY15-3

  • Page 1 • 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 e-mail: sales@robinamerica.com • www.robinamerica.com - 1 -...
  • Page 2 DETAIL OF THE CHANGE: • 1.) ENGINE DIMENSION 1) EY15-3 STD specification After the Change Before the Change - 2 -...
  • Page 3 • DETAIL OF THE CHANGE: 2) EY15-3 Generator and Pump specification After the Change Before the Change - 3 -...
  • Page 4 • DETAIL OF THE CHANGE: 3) EY20-3 STD specification After the Change Before the Change - 4 -...
  • Page 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 - 5 -...
  • Page 6 • DETAIL OF THE CHANGE: 2) The material of intake valve 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.

  • Page 7: Main Bearing Cover

    • DETAIL OF THE CHANGE: 3.) MAIN BEARING COVER The ball bearing will be changed. 4.) GASKET CP (HEAD) The material will be changed to asbestos-free material (graphite). After the Change Before the Change NOTE: When repairing the engine, wipe off oil and clean the contact surface of crankcase and cylinder head.

  • Page 8: Exhaust Valve

    • DETAIL OF THE CHANGE: 9.) TOP RING The shape of the top ring will be changed. After the Change Before the Change 10.) OIL RING The specification of the oil ring will be changed. 11.) CAMSHAFT The material will be changed. 12.) INTAKE VALVE The distinction mark on vlalve surfaces will be elinimated.
  • Page 9 • DETAIL OF THE CHANGE: 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 - 9 -...
  • Page 10 • DETAIL OF THE CHANGE: 15.) MUFFLER COVER The change of muffler cover shape will be accompanied with the muffler change. After the Change Before the 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.

  • Page 11: Blower Housing

    • DETAIL OF THE CHANGE: 16.) GASKET (EXHAUST) The material will be changed to asbestos-free material (graphite). NOTE: When repairing the engine, wipe off oil and clean the contact surface. Also replace the gasket with the new one. 17.) AIR CLEANER AY The air cleaner will be changed.
  • Page 12 • DETAIL OF THE CHANGE: 22.) RECOIL STARTER AY 1) For STD specification the recoil starter shape will be changed. After the Change Before the Change After the Change After the Change EY15-3D 35.5 20.8 45° EY15D 30° á á á...
  • Page 13 • DETAIL OF THE CHANGE: 2) For pump and generator specifications the material of the recoils starter will be changed from sheet metal to resin. After the Change Before the Change - 13 -...
  • Page 14 • DETAIL OF THE CHANGE: 3) Pulling direction 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 - 14 -...
  • Page 15 • DETAIL OF THE CHANGE: 23.) LABEL, Trademark The new label will be on the recoil starter. After the Change Before the Change 24.) LABEL, Engine Name The model name will be changed. After the Change Before the Change 25.) LABEL, Caution The safety caution label will be changed.

  • Page 16: Fuel Tank Cap

    • DETAIL OF THE CHANGE: 26.) FUEL TANK CAP The material of the outside cap will be changed from sheet metal to resin. After the Change Before the Change 27.) FUEL PIPE The fuel pipe between the fuel strainer and carburetor will be changed from straight type to molded type.

  • Page 17: Oil Gauge

    • DETAIL OF THE CHANGE: 28.) CARBURETOR The fuel inlet nipple will be changed from "L" shape pipe to straight pipe. After the Change Note: This illustration shows the carburetor for the EY15-3D. Before the Change Note: Distinction mark for STD carburetor 1533010 (EY15-3D) - 156030 (EY15D) 203110 (EY20-3D) - 203011 (EY20D) 29.) OIL GAUGE...
  • Page 18 • DETAIL OF THE CHANGE: 30.) MAGNETO 1) FLYWHEEL The thread hole for the flywheel puller will be eliminated. After the Change Before the Change Note: How to remove the flywheel from the engine 1) Remove the fixing nut from flywheel. 2) Remove the starter pulley.
  • Page 19 • DETAIL OF THE CHANGE: 2) IGNITION COIL The shape of the ignition coil will be changed. 1) EY15-3 After the Change Before the Change 2) EY20-3 After the Change Before the Change 31.) SWITCH AY The switch will be changed.
  • Page 20 • CHANGE OF PART NUMBERS AND INTERCHANGEABILITY: 1.) EY15-3D Remarks Part Number Interchangeability Part Number Part Name AFTER CHANGE QTY. BEFORE CHANGE QTY. Crankcase 281-10101-01 226-10101-21 Incl. # 2,3 Ball Bearing X60-02500-10 060-02500-10 Oil Seal 044-00800-10 Washer 003-11080-00 Main Bearing CV 282-11001-01 227-11001-31 Inc.
  • Page 21 • CHANGE OF PART NUMBERS AND INTERCHANGEABILITY: 1.) EY15-3D Remarks Part Name Part Number Interchangeability Part Number AFTER CHANGE QTY. BEFORE CHANGE QTY. Rubber Pipe 281-62601-H3 085-10611-60 Hose Clamp X56-11100-20 056-11100-20 Carburetor AY 281-62301-00 226-62360-30 Oil Gauge 282-63601-H1 Incl. # 35,36 Oil Gauge 282-63601-H3 269-63601-03...
  • Page 22 • CHANGE OF PART NUMBERS AND INTERCHANGEABILITY: 2.) EY20-3D Remarks Part Number Interchangeability Part Number Part Name AFTER CHANGE QTY. BEFORE CHANGE QTY. Crankcase 282-10101-01 227-10101-21 Incl. # 2,3 Ball bearing X60-02500-10 060-02500-10 Oil Seal 044-00800-10 Washer 003-11080-00 Main Bearing CV 282-11001-01 227-11001-31 Incl.
  • Page 23 • CHANGE OF PART NUMBERS AND INTERCHANGEABILITY: 2.) EY20-3D Remarks Part Name Part Number Interchangeability Part Number AFTER CHANGE QTY. BEFORE CHANGE QTY. Fuel Tank, CP 282-60101-01 227-60101-21 Label, caution X73-20047-20 073-20047-20 Fuel Tank Cap 043-04301-00 043-04300-15 Fuel Pipe 282-62601-H1 227-62640-01 Rubber Pipe 282-62601-H3...

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Ey20-3

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