Subaru Robin Power Products EY20V, EY15V manual IO. Robin Solid State Ignition Engine, Features

Page 41

IO. ROBIN SOLID STATE IGNITION ENGINE

10-1 FEATURES

Model EY 15V can employ as option a pointless igniton system, called Solid State Ignition, whichis the cir- cuit breaker type ignition device, utilizing the power transistor as an element for controling electric current.

.This system is outer coil type without pulser and is called T.I.C. (Transistor ignition circuit type). To the EY20V this T,I.C.is equipped as standard parts.

Being different from the breaker point type ignition system, this brand-new system is completely free from such troubles as starting-up failure owing to dirty, burnt or oxidized point surface, lowering of igntion effi- ciency being caused by moisture, rough surface of breaker point and incorrect timing resultant from worn mechanical parts.

10-2 BASIC THEORY of T.I.C. (See Fig. 52.)

1T.I.C.(Transistorigntiontype) consists ofthe fly- wheelandignition coil with built-in transistor;and

its basic theory is as follows:

Resister

Ignition Coil

1)Revolutionoftheflywheelgenerateselectricity

ontheprimary side oftheignition coil, andthe ;.4d

electriccurrent

A runs. A makesthepowertran-

m

0)

K

-

 

 

 

 

3

sistor “ON” and

the electric

currentB passes.

 

a

5

2

2) The flywheelgoesroundfurther,andatthetime

m

a

v,

of ignitiontheelectriccurrent

C runs,thenthe

v)

 

.g

 

electriccurrent

D runs tothe

signal transistor,

cc

 

by which the electric current B, passing through

 

thepowertransistor, is abruptlycut;and as a

Fig. 52

result,the high voltage electricity is generated

 

on the secondary side of the ignition coil and it

 

sparks at theplug.

 

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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 ~Sequesnceand precautionsin reassembling Precaution in reassemblingMOW to Reassemble CrankshaftEY15V 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 14AIRCLEANERTo 6-3TIMING Adjustment BreakerpointadjustmentMagneto MagnetoTiming Adjustment See Figs ,43 Spark Testing MagnetotroubleshootingSolidstate Ignition C. TransistorignitioncircuitDiscrimination 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 Difficulties11-2ENGINGEMIFIRES 11- 1-3ELECTRICAL System11-3ENGINE Stops 11- 4 Engine OverheatsEnginebackfires through Carburetor EngineknocksPower Transmission to Drivenmachines InstallationVENT1LATION Exhaust GasdischargeSolid State Ignition Type WiringBreaker Point Ignition Type Checks and Corrections Table of Correctionstandards 1.o 10*0.02 #20 220 Every 20 Hours Checks and Maintenance Daily 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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