Subaru Robin Power Products EY15V, EY20V Magneto, Breakerpointadjustment, To 6-3TIMING Adjustment

Page 32

6.

MAGNETO

 

 

 

 

6-1 MAGNETO

 

 

 

 

The spark for ignition is furnished by a magneto assembly. The magneto consists of a flywheel, ignition coil

/

 

 

 

 

 

and contact breaker assembly (including condenser), of which flywheel is mounted on crankshaft and igni-

 

tion coil contact breaker are mounted in crankcase directly. The EY20V type engine normally incorporates a

 

solid state ignition system(T.I.C.) described in 6.5 "SOLID STATE IGNITION."

 

 

6 -2 BREAKERPOINTADJUSTMENT (Fig.41)

 

 

The breaker points, which are mountedin the crank-

 

 

case inside the flywheelshould be checkedtwicea

 

 

season or whenever the ignition spark becomes weak.

 

 

If there is an evidence of pitting or pyramidding, the

 

 

breakerpointsmustbecorrected,andthen

it be-

 

 

comes necessary toreadjustthe

gap to itsproper

 

 

clearance.

 

 

 

 

Thenormalbreakerpointopening(pointgap)

is

 

 

0.35 mm at full separation.Sincethesparktiming

 

 

of 23" is regulated by the point opening, use a tim-

 

 

ing light to obtain an accurate sparkadvance. (Refer

 

 

to "6-3TIMING ADJUSTMENT.")

Fig. 41

 

 

 

 

 

 

 

To adjust breaker point opening, remove starting pulley, blower housing and flywheel from the engine

and

 

proceed as follows: (See Fig. 41.)

 

 

 

 

the

Remove

 

 

 

,

Turn the crankshaft over until the breaker arm comes in contact with thehigh point of the breaker cam. (Maximum point opening: 0.35 mm)

Loosen the contact support plate lock screw just enoughso that breaker can be moved. Insert a 0.35 mm feeler gauge between the points.

Caution: Adjust the breaker point gap without opening it more than 2 mm, otherwise rated heel-pressing force may not be obtained due to the bending of contact breaker arm.

Apply a screw driver t o adjust tab and move the contact support plate just enoughso that a slight drag is felt while sliding the feeler gauge from the gap between the points.

Tighten the lockscrew- and recheck the breaker pointgap.

Pull a stripof 8 10 mmwide whitepaperthroughthe closed pointsto removeoilandduston the point surfaces.

Caution: When inserting a sheet of paper, never open the breaker point gap more than 2 mm.

Mount the flywheel, blower housing and starting pulley on the engine after adjustment.

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Contents Page Side Valve Wisconsin RobinContents Basic Theory ofT .I.C SPEC1FICATIONS ModelPerformance Continuous Rated OutputFeatures CYLINDER,CRANKCASE Crankshaft6VALVEARRANGEMENT Connecting ROD and PistonCamshaft Lubrication CylinderheadCooling 111IGNITION 112CARBURETORSectional View of Engine Model EY15VAir Cleaner Muffler Cover Model EY20V Model EY20V Preparations and Suggestions Special ToolsApplicalbeShape Model 3HOW to Disassemble OrderTool Order Exhaust valve Main bearing cover Procedures Remarks OrderProcedures Precaution in reassembling ~Sequesnceand precautionsin reassemblingMOW to Reassemble CrankshaftDimensions of Crankshaft Pin EY15V EyzovPeriphery.I Y20 5 Mainbearing Cover 6INTAKE and Exhaust Valves Valve and Valve Guide Clearance7TAPPET Adjustment ’ 5-4-8CYLINDER Head Kg-cm1FUEL Tank Bracket Intake Manifold14AIRCLEANER 1 7 Recoil StarterBreakerpointadjustment To 6-3TIMING AdjustmentMagneto MagnetoTiming Adjustment See Figs ,43 Magnetotroubleshooting Spark TestingSolidstate Ignition C. TransistorignitioncircuitDiscrimination accordingto the dimensions GovernoradjustmentPoint where the governorspring is to be hooked Page Carburetor 1 Float System1 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 System11- 1-3ELECTRICAL System 11-2ENGINGEMIFIRES11-3ENGINE Stops 11- 4 Engine OverheatsEngineknocks Enginebackfires through CarburetorInstallation Power Transmission to DrivenmachinesVENT1LATION Exhaust GasdischargeSolid 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 MaintenancePREPARATiON for Longabeyance Every 500 600 Hours Semiannual Checks and MaintenanceEvery 1000 Hours Yearly Checks and Maintenance Page Page Page Page Industrial Engines
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