Engineknocks | Subaru Robin Power Products EY15V, EY20V guide

11-5 ENGINEKNOCKS.

1)Low-quality gasoline.

%2) Engine operating under heavy load at low speed.

3)Carbon or lead deposits in the cylinder head.

4)Sparktimingincorrect.

5)Loose connecting rod bearing due to wear.

6)Loose piston pin due to wear.

7)Cuases of engine overheat.

11-6 ENGINEBACKFIRES through CARBURETOR.

1)Water or dirt in gasoline, or low-gradegasoline.

2)Intake valve stuck.

3)Valves overheated, or red-hot carbonparticles in the combustion chamber

4)Enginecold.

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Subaru Robin Power Products EY15V, EY20V manual Engineknocks, Enginebackfires through Carburetor

Contents

Page Side Valve Wisconsin Robin Contents Basic Theory ofT .I.C SPEC1FICATIONS Model Performance Continuous Rated Output Features CYLINDER,CRANKCASE Crankshaft 6VALVEARRANGEMENT Connecting ROD and PistonCamshaft Lubrication CylinderheadCooling 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 Precaution in reassembling ~Sequesnceand precautionsin reassemblingMOW to Reassemble 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 Breakerpointadjustment To 6-3TIMING AdjustmentMagneto Magneto Timing Adjustment See Figs ,43 Magnetotroubleshooting Spark TestingSolidstate Ignition C. Transistorignitioncircuit Discrimination accordingto the dimensions GovernoradjustmentPoint where the governorspring is to be hooked Page Carburetor 1 Float System 1 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 Starting Difficulties 11- 1-2 Compression System 11- 1-3ELECTRICAL System 11-2ENGINGEMIFIRES11-3ENGINE Stops 11- 4 Engine Overheats Engineknocks Enginebackfires through Carburetor Installation Power Transmission to DrivenmachinesVENT1LATION Exhaust Gasdischarge Solid State Ignition Type WiringBreaker Point Ignition Type Checks and Corrections Table of Correctionstandards 1.o 10*0.02 #20 220 Daily Checks and Maintenance Every 20 Hours Checks and Maintenance15-3EVERY 50 Hours IO Dayschecks and Maintenance Every 100 200 Hours Monthly Checks and Maintenance PREPARATiON for Longabeyance Every 500 600 Hours Semiannual Checks and MaintenanceEvery 1000 Hours Yearly Checks and Maintenance Page Page Page Page Industrial Engines