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Subaru Robin Power Products EY20V, EY15V manual Governoradjustment, l-”4

Models: EY20V EY15V

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7. GOVERNORADJUSTMENT

7. GOVERNORADJUSTMENT

Model EY 15V and EY20V employ a centrifugal flyweight type governor. The governor is mounted on the governor gear, and the throttlevalve of the carburetor is automatically regulated by a lever which is connect- ed to the governorin order to maintain constant engine speedagainst load variations.

The adjustment procedureof the governoris as follows

1)Turn the speed control lever towards high speed, and confirm that the carburetor throttle valve is fully opened.

(See Fig. 45.)

Throttle Shaft

Hook Hole Low Speed High Speed

*The point where the governorspring is to be hooked

For EY15V the governor spring is to be hooked atthepoints 2 A, while it is tobehookedat the points 2 ++ B for EY20V. (See Fig. 46.)

Note: The governor lever for E Y20V has an em- bossed mark 20, while the lever of E Y 15V has no mark on it.

TheDimensions of the governor spring to be hooked are different each other accordingto the engine revolution.

Discrimination accordingto the dimensions:

EYl5V, EY20V (3600-3800rpm)

Fig. 45

h

Governor Lever

Hooking Points - (Common to3000,3600 3800 rpm)

Fig. 46

EYl5V, EY20V (3000 rpm)

l-”4

Fig. 47

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Image 35

Subaru Robin Power Products EY20V, EY15V manual Governoradjustment, l-”4, The point where the governorspring is to be hooked

Contents

Page EH15 ROBIN TO WISCONSIN ROBINROBIN EY08How To Reassemble CONTENTSFEATURES How To Disassemble10-2 Basic Theory ofT .I.C EYPOV 1. SPEC1FICATIONSModel EY15V2-3 MAXIMUM TORQUE and FUEL CONSUMPTION RATIO a t MAXIMUM OUTPUT 2. PERFORMANCE2 - 2 CONTINUOUS RATED OUTPUT 3. FEATURES 4-3 CRANKSHAFT 4. GENERAL DESCRIPTION of ENGINECONSTRUCTION4 - 1 CYLINDER,CRANKCASE 4 - 2 MAINBEARINGCOVERExhaust Valve 4-4 CONNECTING ROD and PISTON4-5 CAMSHAFT 4-6 VALVEARRANGEMENT4-10 LUBRICATION 4-7 CYLINDERHEAD4 - 9 COOLING 4-112CARBURETOR 4-111 IGNITION4-14 SECTIONAL VIEW of ENGINE MODEL EY15V Muffler Cover Air CleanerMODEL EY15V ’piston Pin Main Bearing Cover Oil Scraper MODEL EY20VCrankshaft Oil Filler’ MODEL EY20V5 - 2 SPECIAL TOOLS 5. DISASSEMBLY and REASSEMBLY5- 1 PREPARATIONS and SUGGESTIONS ApplicalbeShape Model ToolLock Bolt 5-3 HOW TO DISASSEMBLEChoke Rod OrderFlywheel Puller ToolPlastic Hammer ToolOrder Item OrderProceduresProcedures RemarksTool5 - 4 MOW TO REASSEMBLE 0 Precaution in reassembling~Sequesnceand precautionsin reassembling EY15V 3 Dimensions of Crankshaft PinCONNECTING ROD TO CRANK CONNECTINGPISTON ROD TO5-4-2 PISTON and PISTON RING E Y I S 5 -4-3 CONNECTING ROD5 - 4 - 4 TAPPET and CAMSHAFT E Y205 - 4 - 5 MAINBEARING COVER Install the main bearing cover to the crankcaseEY15V 5-4-6 INTAKE and EXHAUST VALVES3O53 VALVE and VALVE GUIDE CLEARANCEFront should be this side 5-4-7 TAPPET ADJUSTMENTFit t-heoil seal to the valve stem. Only for EY201 kg-cm 5-4-1 FUEL TANK BRACKET 5 -4-1 3 CARBURETOR and ITS RELATIVE PARTS 6-1 MAGNETO MAGNETO6 -2 BREAKERPOINTADJUSTMENT Fig.41 to 6-3TIMING ADJUSTMENTNote Refer tosection 4-11 IGNITION and 4-13 CHECKS and CORRECTIONS 6-3 TIMING ADJUSTMENT See Figs. 42,43 andT.I.C. TRANSISTORIGNITIONCIRCUIT 6 - 4 MAGNETOTROUBLESHOOTING“SPARK TESTING 6-5 SOLIDSTATE IGNITIONl-”4 7. GOVERNORADJUSTMENTThe point where the governorspring is to be hooked Discrimination accordingto the dimensionsPage 8- 1- 1 FLOAT SYSTEM 8. CARBURETOR8-2-3 PILOT SYSTEM air jet8-2 DISASSEMBLY and REASSEMBLY 8-2-5 FLOAT SYSTEM 8 - 2 - 4 MAIN SYSTEMI HP 9. BREAK-IN OPERATION of REASSEMBLEDENGINE10-2 BASIC THEORY of T.I.C. See Fig IO. ROBIN SOLID STATE IGNITION ENGINE10-1 FEATURES 11- 1 STARTING DIFFICULTIES 1 1- 1 - 1 FUEL SYSTEM11- 4 ENGINE OVERHEATS 11-2ENGINGEMIFIRES11-3 ENGINE STOPS 11-6 ENGINEBACKFIRES through CARBURETOR 11-5 ENGINEKNOCKS12-2 VENT1LATION 12. INSTALLATION12-4 POWER TRANSMISSION to DRIVENMACHINES 12-4-1 BELT DRIVEBlack 12-5 WIRINGBREAKER POINT IGNITION TYPE SOLID STATE IGNITION TYPE13. CHECKS and CORRECTIONS 0.25 14. TABLE of CORRECTIONSTANDARDSL-l= EY200.05 1.o 1.o0.04 0.037-0.063ENGINE MODEL 0.050.10*0.02 0.250.56 2.2/3000MODEL USE LIMIT cc/hr5/400 EY20EY20 EY1515-3 EVERY 50 HOURS IO DAYSCHECKS and MAINTENANCE 15. MAINTENANCE and STORING15-1 DAILY CHECKS and MAINTENANCE 15-2 EVERY 20 HOURS CHECKS and MAINTENANCE15-7 PREPARATiON for LONGABEYANCE 15-5 EVERY 500 - 600 HOURS SEMIANNUAL CHECKS and MAINTENANCE15-6 EVERY 1000 HOURS YEARLY CHECKS and MAINTENANCE Page Page Page Page Industrial Engines