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MI-476                                                                                                                      2 

INTRODUCTION 

This manual has been compiled to suit the service requirements of the basic 

engines and accessories most commonly supplied with engines. 
Wisconsin Motor Corporation adapts its engines to suit individual customer re-

quirements whenever practical.  However, it would become too involved to include 

all variations in one manual; therefore, should any problems arise concerning 

engine servicing, we advise that a Wisconsin distributor or authorized service 

station be contacted, as they are capable of identifying all parts by the specifi-

cation numbers stamped on the name plate of engine. 
A listing of approved Wisconsin service stations appears in the back of this 

manual. 

WISCONSIN

 heavy duty air cooled engines are of the most advanced design and 

are built in a modern factory, equipped with the latest machinery available.  Only 

the best materials, most suitable for the particular part, are used.  During produc-

tion, every part is subjected to the most rigid inspection, as are also the com-

pletely assembled engines.  After assembly, every engine is operated on its own 

power for several 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 engineering 

experience in the design of gasoline engines for every conceivable type of ser-

vice.  The performance of these engines is proof of the long satisfactory service 

you too can expect from your engine. 
Like all fine machinery, the engine must be given regular care and be operated in 

accordance with the instructions. 
 

SAFETY PRECAUTIONS 

 

Precaution is the best insurance against an accident. 
Never fill fuel tank while engine is in operation or hot, to avoid the possibility 

of spilled fuel causing a fire. 
Never operate engine in a closed building unless the exhaust is piped outside.  

This exhaust contains carbon monoxide, a poisonous, odourless and invisible gas, 

which if breathed causes serious illness and possible death. 
Never make adjustments on machinery while it is connected to the engine, with-

out first removing the ignition cable from the spark plug.  Turning over the ma-

chinery by hand during adjusting or cleaning might start the engine and machin-

ery with it, causing serious injury to the operator.  
 

Keep this book handy at all times,  familiarize 
yourself with the operating instructions.

   

 

Summary of Contents for Air Cooled TR-10D

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 28: ......

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

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

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

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Page 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...

Page 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...

Page 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...

Page 44: ......

Page 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...

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

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