Cylinderhead, Cooling | Subaru Robin Power Products EY15V, EY20V

4-7 CYLINDERHEAD

The cylinderhead is analuminum die casting, and forms a Ricardo type combustion chamber with am- ple area for high combustion efficiency.

(See Fig. 8.)

4 - 8 GOVERNOR

Fig. 8

Main

The governor is a centrifugalflyweight type which

permitsconstantoperation atthe selected speed against load variations. Governor gear is installed on the bearing cover without fail, and it engages with the cam gear after reassembling.

(See Fig. 9.)

-~

Governor Gear Complete Governor Sleeve

BQ

Fig. 9

4 - 9 COOLING

The cooling fan serving also as a flywheel cools the cylinder and cylinder head by forced air cooling. Cylinder
baffles is provided for guiding the cooling air	I
	I
4-10 LUBRICATION
The rotating andsliding parts are being lubricated by
scooping and splashing the oil in the crankcase with
the oil scraper attached to the crankshaft.
(See Fig. 10.)

OiI Scraper

-

Fig. 70

- 6 -

Image 10

Subaru Robin Power Products EY15V, EY20V manual Cylinderhead, Cooling, Lubrication

Contents

Page Side Valve Wisconsin Robin Contents Basic Theory ofT .I.C SPEC1FICATIONS Model Performance Continuous Rated Output Features CYLINDER,CRANKCASE Crankshaft Camshaft Connecting ROD and Piston6VALVEARRANGEMENT Cooling CylinderheadLubrication 111IGNITION 112CARBURETOR Sectional View of Engine Model EY15V Air Cleaner Muffler Cover Model EY20V Model EY20V Preparations and Suggestions Special Tools ApplicalbeShape Model 3HOW to Disassemble Order Tool Order Exhaust valve Main bearing cover Procedures Remarks OrderProcedures MOW to Reassemble Precaution in reassembling~Sequesnceand precautionsin reassembling Crankshaft Dimensions of Crankshaft Pin EY15V Eyzov Periphery.I Y20 5 Mainbearing Cover 6INTAKE and Exhaust Valves Valve and Valve Guide Clearance 7TAPPET Adjustment ’ 5-4-8CYLINDER Head Kg-cm 1FUEL Tank Bracket Intake Manifold 14AIRCLEANER 1 7 Recoil Starter Magneto BreakerpointadjustmentTo 6-3TIMING Adjustment Magneto Timing Adjustment See Figs ,43 Solidstate Ignition MagnetotroubleshootingSpark Testing C. Transistorignitioncircuit Point where the governorspring is to be hooked GovernoradjustmentDiscrimination accordingto the dimensions Page Carburetor 1 Float System 2 Pilotsystem Disassembly and Reassembly1 Throttle System Float System BREAK-IN Operation of Reassembledengine IO. Robin Solid State Ignition Engine FeaturesBasic Theory of T.I.C. See Fig 11- 1 Starting Difficulties 11- 1-2 Compression System 11-3ENGINE Stops 11- 1-3ELECTRICAL System11-2ENGINGEMIFIRES 11- 4 Engine Overheats Engineknocks Enginebackfires through Carburetor VENT1LATION InstallationPower Transmission to Drivenmachines Exhaust Gasdischarge Breaker Point Ignition Type WiringSolid State Ignition Type Checks and Corrections Table of Correctionstandards 1.o 10*0.02 #20 220 15-3EVERY 50 Hours IO Dayschecks and Maintenance Daily Checks and MaintenanceEvery 20 Hours Checks and Maintenance Every 100 200 Hours Monthly Checks and Maintenance Every 1000 Hours Yearly Checks and Maintenance Every 500 600 Hours Semiannual Checks and MaintenancePREPARATiON for Longabeyance Page Page Page Page Industrial Engines