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Subaru Robin Power Products EY15V DISASSEMBLY and REASSEMBLY, 5- 1 PREPARATIONS and SUGGESTIONS

Models: EY20V EY15V

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5. DISASSEMBLY and REASSEMBLY

5. DISASSEMBLY and REASSEMBLY

5- 1 PREPARATIONS and SUGGESTIONS

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1 ) Whendisassembling the engine, remember well the locations of individual parts so that they can bereas- sembed correctly. If you are uncertain of identifying some parts, it is suggested that tags be attached to them.

2)Have boxes ready to keep disassembed parts by group.

3)To prevent missing and misplacing, temporarily assemble each group of disassembed parts.

4)Carefully handle disassembed parts, and clean them with washing oil.

5 ) Use the correct tools in the correct way.

5 - 2 SPECIAL TOOLS

For yourreference, thefollowing shows specialtools of Robin Engine for Disassembly, Measuring and Inspec- tion Instruments.

	~
Tool	Use	Applicalbe	Shape
		Model

		EY10,13,14
		EY15, 18, 20
Flywheel Puller	For pulling off	EY 25,27, 33
(with bolt)	Flywheel	EY35,40,44
		EY35,40,44

EC05.07,10

EC17,25.37

EY10,13,14

For mounting and

Valve Spring dismounting Valve EY15,18,20

Retainer SpringRetainer

andRetainer Lock EY25,27,33 EY35,40,44

	Valve Guide	For pulling off	EY13, 14
	Puller	Valve guide

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Subaru Robin Power Products EY15V manual DISASSEMBLY and REASSEMBLY, 5- 1 PREPARATIONS and SUGGESTIONS, 5 - 2 SPECIAL TOOLS

Contents

Page ROBIN TO WISCONSIN ROBIN ROBINEY08 EH15CONTENTS FEATURESHow To Disassemble How To Reassemble10-2 Basic Theory ofT .I.C 1. SPEC1FICATIONS ModelEY15V EYPOV2 - 2 CONTINUOUS RATED OUTPUT 2. PERFORMANCE2-3 MAXIMUM TORQUE and FUEL CONSUMPTION RATIO a t MAXIMUM OUTPUT 3. FEATURES 4. GENERAL DESCRIPTION of ENGINECONSTRUCTION 4 - 1 CYLINDER,CRANKCASE4 - 2 MAINBEARINGCOVER 4-3 CRANKSHAFT4-4 CONNECTING ROD and PISTON 4-5 CAMSHAFT4-6 VALVEARRANGEMENT Exhaust Valve4 - 9 COOLING 4-7 CYLINDERHEAD4-10 LUBRICATION 4-111 IGNITION 4-112CARBURETOR4-14 SECTIONAL VIEW of ENGINE MODEL EY15V MODEL EY15V Air CleanerMuffler Cover Crankshaft MODEL EY20V’piston Pin Main Bearing Cover Oil Scraper MODEL EY20V Oil Filler’5- 1 PREPARATIONS and SUGGESTIONS 5. DISASSEMBLY and REASSEMBLY5 - 2 SPECIAL TOOLS Tool ApplicalbeShape Model5-3 HOW TO DISASSEMBLE Choke RodOrder Lock BoltTool Flywheel PullerTool Plastic HammerOrderProcedures ProceduresRemarksTool Order Item~Sequesnceand precautionsin reassembling 0 Precaution in reassembling5 - 4 MOW TO REASSEMBLE 3 Dimensions of Crankshaft Pin CONNECTING ROD TO CRANKCONNECTINGPISTON ROD TO EY15V5-4-2 PISTON and PISTON RING 5 -4-3 CONNECTING ROD 5 - 4 - 4 TAPPET and CAMSHAFTE Y20 E Y I SInstall the main bearing cover to the crankcase 5 - 4 - 5 MAINBEARING COVER5-4-6 INTAKE and EXHAUST VALVES 3O53VALVE and VALVE GUIDE CLEARANCE EY15VFit t-heoil seal to the valve stem. Only for EY201 5-4-7 TAPPET ADJUSTMENTFront should be this side kg-cm 5-4-1 FUEL TANK BRACKET 5 -4-1 3 CARBURETOR and ITS RELATIVE PARTS MAGNETO 6 -2 BREAKERPOINTADJUSTMENT Fig.41to 6-3TIMING ADJUSTMENT 6-1 MAGNETO6-3 TIMING ADJUSTMENT See Figs. 42,43 and Note Refer tosection 4-11 IGNITION and 4-13 CHECKS and CORRECTIONS6 - 4 MAGNETOTROUBLESHOOTING “SPARK TESTING6-5 SOLIDSTATE IGNITION T.I.C. TRANSISTORIGNITIONCIRCUIT7. GOVERNORADJUSTMENT The point where the governorspring is to be hookedDiscrimination accordingto the dimensions l-”4Page 8. CARBURETOR 8- 1- 1 FLOAT SYSTEM8-2 DISASSEMBLY and REASSEMBLY air jet8-2-3 PILOT SYSTEM 8 - 2 - 4 MAIN SYSTEM 8-2-5 FLOAT SYSTEM9. BREAK-IN OPERATION of REASSEMBLEDENGINE I HP10-1 FEATURES IO. ROBIN SOLID STATE IGNITION ENGINE10-2 BASIC THEORY of T.I.C. See Fig 1 1- 1 - 1 FUEL SYSTEM 11- 1 STARTING DIFFICULTIES11-3 ENGINE STOPS 11-2ENGINGEMIFIRES11- 4 ENGINE OVERHEATS 11-5 ENGINEKNOCKS 11-6 ENGINEBACKFIRES through CARBURETOR12. INSTALLATION 12-4 POWER TRANSMISSION to DRIVENMACHINES12-4-1 BELT DRIVE 12-2 VENT1LATION12-5 WIRING BREAKER POINT IGNITION TYPESOLID STATE IGNITION TYPE Black13. CHECKS and CORRECTIONS 14. TABLE of CORRECTIONSTANDARDS L-l=EY20 0.251.o 1.o 0.040.037-0.063 0.050.05 0.10*0.020.25 ENGINE MODEL2.2/3000 MODELUSE LIMIT cc/hr 0.56EY20 EY20EY15 5/40015. MAINTENANCE and STORING 15-1 DAILY CHECKS and MAINTENANCE15-2 EVERY 20 HOURS CHECKS and MAINTENANCE 15-3 EVERY 50 HOURS IO DAYSCHECKS and MAINTENANCE15-6 EVERY 1000 HOURS YEARLY CHECKS and MAINTENANCE 15-5 EVERY 500 - 600 HOURS SEMIANNUAL CHECKS and MAINTENANCE15-7 PREPARATiON for LONGABEYANCE Page Page Page Page Industrial Engines