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13                                                                                               MI-1064 

WICO MAGNETO COIL TEST 

The coil test specifications for the Wico MA-60 and 

the Graham tester are listed below: 

MA-60 SPECIFICATIONS 

        Operating                      Secondary 

           Amps.                          Continuity 
             2.0                                40-60 

GRAHAM SPECIFICATIONS 

Coil 

Maximum 

Secondary 

Maximum 

Primary 

Coil 

Index 

Minimum 

Coil Test 

Maximum 

Gap Index 

 

X13000 

 

8000 

 

.9 

 

60 

 

16 

 

60 

 

FAIRBANKS-MORSE COIL TEST 

It is recommended that a new coil be selected from 

stock and used as a master coil to calibrate the tester.  

If  the tester is set up with a 

“good-bad”

  range or 

“variable spark discharge gap”

, it can be used with 

whatever primary input is required to bring it into the 

desired range. 
If the coil does not test to specification, the flywheel 

will have to be removed to replace the coil. 
The 

high tension wire

 can be removed from the coil by 

rotating the wire several turns in the counter-clockwise 

direction. 

ELECTRICAL EQUIPMENT 

ELECTRICAL WIRING CIRCUITS 

NOTE:

  Beginning with engine serial No. 3989524, 

the  standard wiring circuits of all 

12 volt

  electrical 

equipment for Model TR-10D is 

negative ground po-

larity,

  instead of the previously furnished positive 

ground.  All Model TRA-10D engine motor-generators 

are 

negative ground

 The wiring diagram, 

Fig. 13

  (magneto ignition), il-

lustrates a 

negative ground

 circuit.  If polarity of  

 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
motor-generator is for a positive ground circuit (see 

parts list for polarity according to the part number), termi-

nal connections at ammeter and battery are just re-

versed from those illustrated. 

Battery ignition engines, 

in which the low battery vol-

tage is transformed to high voltage by an ignition 

coil, are wired in accordance with 

Fig. 14

.  This type 

ignition system has always been wired 

negative

 

ground.  Battery is not furnished by Wisconsin Motor 

Corporation. 

MOTOR-GENERATOR OPERATING INSTRUCTIONS 

The combination 

motor-generator

 functions as a crank-

ing motor when the 

starting switch

  is closed.  When 

the switch is open and the engine is running, the 

unit will function as a generator.  The generator out-

put and  circuit voltage for the various battery  and 

operating  requirements are controlled by a 

current-

voltage regulator

 mounted to the generator. 

The total electrical output of this 

12 volt

  combination 

motor-generator is 

10 amperes

.  However, all of the 

current is not taken off of a single terminal.   There 

are 

two terminals

  on the current-voltage  regulator, 

illustrated in 

Fig. 15

, for distributing the generator 

output.  One terminal is marked 

‘BAT’

  and a wire is 

connected from it to the battery, thru an 

ammeter

.

  The 

other terminal marked 

‘L’

  is for a battery ignition 

system, if applicable, and for operating lights or any 

other customer accessory.  For a continuous load, not 

more than 

5 amps

 should be taken from this terminal if 

engine has a magneto ignition.  With battery ignition, 

maximum draw should be 

3 amps

, since 

2 amps 

is re-

quired for the ignition system.  Current from the 

‘L’

 

terminal is continuous and is not affected by the regu-

lator windings.  Whereas, the current to the 

‘BAT’

 

terminal goes thru the regulator windings and is con-

trolled to keep the battery charged. 

The ammeter in this circuit indicates only the current 

going into the battery to keep it charged and does not 

indicate the total generator output.

  If it is necessary to 

check the amount of current coming from the 

‘L’

 

terminal it will be necessary to put a second ammeter 

 

 

Содержание Air Cooled TR-10D

Страница 1: ...WISCONSIN HEAVY DUTY ENGINES INSTRUCTION BOOK AND PARTS LIST MODELS TRA 10D TR 10D ISSUE MM 320 C WORLD S LARGEST BUILDERS OF HEAVY DUTY AIR COOLED ENGINES...

Страница 2: ...gine operating speed still without load for an additional two hours If at all possible operate the engine at light loads for a period totaling about eight hours before maximum load is applied This wil...

Страница 3: ...UCTIONS WISCONSIN SINGLE CYLNDER ENGINES MODEL TRA 10D 3 1 8 Bore 2 7 8 Stroke 22 05 cu In Displacement MODEL TR 10D 3 1 8 Bore 2 5 8 Stroke 20 2 cu In Displacement WISCONSIN MOTOR CORPORATION Milwauk...

Страница 4: ...l hours All adjustments are carefully made so that each engine will be in perfect operating condition when it leaves the factory Back of the Wisconsin Motor Corporation are more than fifty years of en...

Страница 5: ...ed 24 Electrical Equipment Wiring Circuits and Motor Generator 13 Fuel 8 Fuel Pump 8 General Design 7 Governor Adjustment 24 PAGE Governor Description 7 Governor Operation 23 Horsepower 7 Ignition Des...

Страница 6: ...MI 937 2 4 Fig 1 289860C TAKE OFF rear and LEFT HAND SIDE VIEW of ENGINE...

Страница 7: ...5 MI 938 2 FAN END front and RIGHT HAND SIDE VIEW of ENGINE...

Страница 8: ...MI 939 2 6 SECTIONAL VIEWS OF ENGINE...

Страница 9: ...internal parts of the engine GOVERNOR A governor of the centrifugal flyball type controls the engine speed by varying the throttle opening to suit the load imposed upon the engine Manually operated va...

Страница 10: ...temperatures and excessive idling FUEL The fuel tank should be filled with a good quality gasoline free from dirt and water The capacity of the tank is one gallon Some of the poorer grades of gaso li...

Страница 11: ...hich might cause wrecking of the engine and possible injury to bystanders All parts of the engine are designed to safely with stand any speeds which might normally be required but it must be remembere...

Страница 12: ...lement After five washings or one year of service replace cartridge New cartridges are available at you Wis consin Motor dealer Refer to parts list section for re placement part number CRANKCASE BREAT...

Страница 13: ...pyramiding and it becomes necessary to resurface or replace point it will also be necessary to readjust the gap to its proper clearance and re time the engine The normal breaker point gap is 0 020 inc...

Страница 14: ...clockwise and stop immediately when light goes out At this point mark on flywheel should line up with pointer in shroud 7 Assemble coil primary wire to terminal stud and mount cover MAGNETO SERVICE I...

Страница 15: ...an ignition coil are wired in accordance with Fig 14 This type ignition system has always been wired negative ground Battery is not furnished by Wisconsin Motor Corporation MOTOR GENERATOR OPERATING I...

Страница 16: ...and pour about a fluid ounce of crankcase oil through the spark plug hole Turn the engine over several times with the rope starter to distribute the oil over the cylinder wall Then replace the spark...

Страница 17: ...ding float needle valve in carburetor open This condition would be indicated if fuel con tinues to drip from carburetor with engine standing idle Often tapping the float chamber of the carbu retor ver...

Страница 18: ...anced too far See Timing Page 11 Loose or burnt out connecting rod bearing Engine overheated due to causes under previous heading Worn or loose piston pin ENGINE BACKFIRES THROUGH CARBURETOR Water or...

Страница 19: ...wo capscrews holding shroud to bottom of crankcase and two screws at the cylinder head CARBURETOR and AIR CLEANER Fig 21 The carburetor and air cleaner should be removed both to facilitate working on...

Страница 20: ...an be removed when replacement becomes necessary by means of Wisconsin Motor DF 66 A insert puller See Fig 23 Grinding of valves and seats should be done by an authorized Wisconsin service station See...

Страница 21: ...n stroke Observe position of valve stems in the inspection compartment Both valves should be in their lowest position closed then proceed to check clearance FLYWHEEL Fig s 27 and 28 Place a 1 1 2 box...

Страница 22: ...into grease filled hole and assemble gear cover by tapping in place with a soft hammer Caution Be sure timing marks on crankshaft and camshaft gear Fig 38 remain correctly mated when end of camshaft...

Страница 23: ...on down until rod con tacts crank pin The oil dipper in Model TRA 10D is an integral part of the connecting rod cap whereas the Model TR 10D has a sheet metal dipper that must be mounted so that the c...

Страница 24: ...clearance of 002 to 006 in the guide hole Timing mark on camshaft gear must be located between the two marked teeth on the crankshaft gear See Fig 38 If valve timing is off engine will not function pr...

Страница 25: ...crankshaft gear cover and flywheel are mounted The end play should be 001 to 004 inch with engine cold and can be determined as illustrated in Fig 43 Wedge a lever between the fly wheel and crankcase...

Страница 26: ...g tension by means of an adjusting screw The governor lever has 8 holes for the governor spring with the No 1 hole closest to the fulcrum shaft A change in the design of the governor flyweights was in...

Страница 27: ...selected by the WISCONSIN MOTOR CORPORATION in order to assure complete and efficient repair and inspection service to owners of Wisconsin Air Cooled Engines These service stations equipped and traine...

Страница 28: ......

Страница 29: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...

Страница 30: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...

Страница 31: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...

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Страница 41: ...agm section 7 Using a screw driver inserted into the coils of rocker arm spring 13 remove this spring and save 8 Holding the mounting bracket 11 in the left hand with the rocker arm toward the body an...

Страница 42: ...of this pas sage The fuel travels through this channel to the idle jet cali bration The air for the idle mixture originates back of or from behind the main venturi The position of the idle adjusting...

Страница 43: ...alve opens automati cally when the engine starts and admits air to avoid over choking or flooding of the engine The mixture required for starting is considerably richer than that needed to develop pow...

Страница 44: ......

Страница 45: ...ns have been made unless authorized by us We make no Warranty in respect to trade accessories such being subject to the Warranties of their respective manufacturers We shall in no event be liable for...

Страница 46: ...WISCONSIN MOTOR CORPORATION MILWAUKEE WISCONSIN 532466 PRINTED IN U S A...

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