Subaru Robin Power Products EY44-2, EY33-2 manual Magneto

Page 22

7 . MAGNETO

7-1M A G N E T O

In Models EY33-2 and EY44-2, ignition sparkis furnished by a magneto.

The magneto is composed of the flywheel, ignition coil, lighting (charging) coil, breaker assembly (including condenser).

Theflywheel is mounted on crankshaft,whileignitioncoil,lightingcoil,andbreakerassemblyaredirectlyassembledto

crankcase.

7-2B R E A K E RP O I N TA D J U S T M E N T Thebreakerpointsaremountedinsideflywheeland

directlyassembled tocrankcaseCheckbreakerpoints.

whenever ignition spark becomes weak. If there is evidence

of pittingorpyramidding,thebreakerpointsmustbe

 

correctedandthen,

it becomesnecessarytoreadjustthe

 

gap to its proper clearance (0.35mm, 0.014 inch).

 

Thenormalbreakerpointopening

is 0.35mmat

full

separationSincesparktiming.

is regulatedbypoint

 

opening,

use atiminglight

toobtainanaccuratespark

 

advance.

To adjustthebreakerpointopening,remove

 

startingpulleyandflywheelfromengineandobserve following procedures. (see Fig. 7-2)

Remove point cover from crankcase.

Turnthecrankshaftuntilbreakerarmcomesin contactwiththehighestpoint of breakercam(muximumpoint

opening of 0.35mm).

Loosen contact support plate lock screw just enough to move bracket.

Insert a 0.35mm feelergauge between points.

Apply a screwdriver to adjusting tab, and move contact support plate just enoughto obtain specified gap, while opening and closing points.

Clamp the setscrew of contact support plate, and check the point gap again.

Pull a strip of 8 t o lOmm wide white paper through closed points to remove dust and oil.

After adjustment, assemble the point cover, flywheel, and starting pulley to engine.

7-3T I M I N GA D J U S T M E N T

Thespark is timed tooccur23"beforethepistonreaches TDC onthecompressionstroke.Thissparkadvance of 23' is controlled by the breaker point opening and this advance is obtained when the breaker point opening is adjusted according to the BREAKER POINT ADJUSTMENT to 0.35mm (0.014 inch).

However, the advance timing is more accurately adjusted through the following procedures using a timing light as shown in Fig. 7 - 3 - 2 .

-1 8-

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Contents Page Diesel FuelSystem Troubleshooting RUN-INOPERATIONSPEC1FICATIONS Continuousratedoutput Performance1MAXIMUMOUTPUT 3MAXIMUMTORQUEANDFUEL Consumption RATIOATMAX.OUTPUTPerformance Curve FeaturesModel EY44-2 Lighting Coil FLYWHEELCOOLI~GFANSEl Crankshaft CrankcaseMainbearing Cover CamshaftCooling 15AIRCLEANER10GOVERNOR Lubrication2VENTILATION InstallationMounting Exhaust GAS EvacuationRope Startingengine ENGINEwithSTARTINGMOTOR1PREPARATIONS and Suggestions Specialtools4MUFFLER 2BLOWER Housing and Cylinderbaffle3AIRCLEANER 5GOVERNORLEVER and CarburetorTappet Chamber with the Compressor Valve and Valvestemholeclearance 0ossAdjusting Tappet Clearance Fig 9CYLINDERBLOCK12CONNECTING ROD and Piston Camshaft and TappetAssembly of Connecting ROD Piston and Connecting RODPiston Ring See Fig 13CRANKSHAFT -3-13 Magneto 4MAGNETO Service Instructions See FigChecking Ignition Spark Governor Adjustment Operation and Construction see Figs -1-1and CarburetorFloat System Disassembly and Reassembly Pilot System4MAIN System 3ADJUSTMENT3PILOT System 5FLOATSYSTEMRUN-IN Operation of Engine after Reassembly 11 1 1 Fuel System StartingdifficultiesCompression System Engine Stops Engine MissesEngineoverheats 11-5ENGINE Knocks 11-6ENGINE Backfires Through CarburetorChecks and Corrections Orrection Table SizeIo.1 +o.1 01500 250-300 18-2 Every 50 HOURS10DAY Checks and Maintenance Daily Checks and MaintenanceEVERY20HOURS Checks and Maintenance 134EVERY 100 200 Hoursmonthly Checks and Maintenance13-5EVERY 500 600 Hourssemianual Checks Maintenance13-6EVERY 1000 Hours Yearly Checks and Maintenance 13-7PREPARATION for Long AbeyancePage Page Industrial Engines
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