Subaru Robin Power Products EY20V Governoradjustment, Discrimination accordingto the dimensions

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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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Contents Page Wisconsin Robin Side ValveContents Basic Theory ofT .I.C Model SPEC1FICATIONSContinuous Rated Output PerformanceFeatures Crankshaft CYLINDER,CRANKCASE6VALVEARRANGEMENT Connecting ROD and PistonCamshaft Lubrication CylinderheadCooling 112CARBURETOR 111IGNITIONModel EY15V Sectional View of EngineAir Cleaner Muffler Cover Model EY20V Model EY20V Special Tools Preparations and SuggestionsApplicalbeShape Model Order 3HOW to DisassembleTool Order Exhaust valve Main bearing cover Procedures Remarks OrderProcedures Crankshaft Precaution in reassembling~Sequesnceand precautionsin reassembling MOW to ReassembleEY15V Eyzov Dimensions of Crankshaft PinPeriphery.I Y20 5 Mainbearing Cover Valve and Valve Guide Clearance 6INTAKE and Exhaust Valves7TAPPET Adjustment Kg-cm ’ 5-4-8CYLINDER HeadIntake Manifold 1FUEL Tank Bracket1 7 Recoil Starter 14AIRCLEANERMagneto BreakerpointadjustmentTo 6-3TIMING Adjustment MagnetoTiming Adjustment See Figs ,43 C. Transistorignitioncircuit MagnetotroubleshootingSpark Testing Solidstate IgnitionDiscrimination accordingto the dimensions GovernoradjustmentPoint where the governorspring is to be hooked Page 1 Float System Carburetor1 Throttle System Disassembly and Reassembly2 Pilotsystem Float System BREAK-IN Operation of Reassembledengine Basic Theory of T.I.C. See Fig FeaturesIO. Robin Solid State Ignition Engine 11- 1-2 Compression System 11- 1 Starting Difficulties11- 4 Engine Overheats 11- 1-3ELECTRICAL System11-2ENGINGEMIFIRES 11-3ENGINE StopsEnginebackfires through Carburetor EngineknocksExhaust Gasdischarge InstallationPower Transmission to Drivenmachines VENT1LATIONSolid State Ignition Type WiringBreaker Point Ignition Type Checks and Corrections Table of Correctionstandards 1.o 10*0.02 #20 220 Every 100 200 Hours Monthly Checks and Maintenance Daily Checks and MaintenanceEvery 20 Hours Checks and Maintenance 15-3EVERY 50 Hours IO Dayschecks and MaintenancePREPARATiON for Longabeyance Every 500 600 Hours Semiannual Checks and MaintenanceEvery 1000 Hours Yearly Checks and Maintenance Page Page Page Page Industrial Engines