3 to 10 HP 4-Cycle L-Head Engines - Allotment & Gardens

1 This manual covers engine models:ECV100 - 120, H22 - 80, HH40 - 70, HHM80, HM70 - 100,HMSK70 - 110, HMXL70, HS40 - 50, HSK30 - 70, HSSK40 - 50,HT30 - 35, HXL35, LAV30 - 50, LEV80 - 120, TNT100 - 120,TVM125 - 220, TVXL170 - 220, TVS75 - 120, TVXL105 - 115,V40 - 80, VH40 - 70, V60 - 70, VM70 - 100 Model numbers are located on the engine TO 11 HP4-CYCLEL-HEADENGINEST E C H N I C I A N ' S H A N D B O O KTECUMSEHiC Tecumseh Products Company1998 CONTENTSCHAPTER 1 GENERAL OF MODEL NUMBER ..1 SHORT ..4 CHAPTER 2 AIR OR TESTING .. FILTER FILTER 3 CARBURETORS AND FUEL PRIMERS ..8 IMPULSE FUEL STYLE CARBURETORS ..9 DIAPHRAGM (PRESSURE DIFFERENTIAL) SYSTEM 1 3 & 4 CARBURETORS ..11 SERIES 6 CARBURETORS 10 (EMISSION)..12 NON-TECUMSEH CARBURETORS -- DELLORTO TROUBLESHOOTING TROUBLESHOOTING.

2 PRE-SETS AND ADJUSTMENTS (NON-EMISSION Engines )..16 NON-ADJUSTABLE CARBURETOR ..16 DISASSEMBLY STYLE CARBURETORS ..17 DIAPHRAGM CARBURETORS ..19 FLOAT ADJUSTING SERVICE 4 GOVERNORS AND COMPONENTS (VARIOUS STYLES).. ADJUSTMENT PROCEDURE FOR SHORT BLOCK GEAR AND SHAFT CONTROLS AND 5 REWIND REWIND STARTER (TVS, HM, TVM, TVXL), AND STAMPED STEEL STARTER (HM, VM, TVM, TVXL)..36 STYLIZED REWIND STARTER WITH PLASTIC STAMPED STEEL AND CAST ALUMINUM STARTER (HM, VM)..38 VERTICAL PULL STARTER HORIZONTAL ENGAGEMENT PULL STARTER VERTICAL ENGAGEMENT 6 ELECTRICAL CIRCUIT AND ELECTRIC ALTERNATING CURRENT TO DIRECT WAVE RECTIFIER SINGLE WAVE RECTIFIER BRIDGE ELECTRICAL STARTER CIRCUIT FLOW ELECTRICAL CHARGING CIRCUIT FLOW CIRCUIT ..48 CHARGING OIL SHUTDOWN VOLT OR 120 VOLT ELECTRIC STARTERS WITH EXPOSED VOLT OR 120 VOLT ELECTRIC STARTERS WITH THE STARTER GEAR UNDER THE CAP 7 FLYWHEEL BRAKE SURFACE EDGE REMOVAL.

3 61 BRAKE LEVER AND GOUNDOUT INTERLOCK SWITCH ..62 CONTROL BRACKET 8 IGNITION ..63 GENERAL STATE IGNITION SYSTEM (CDI)..63 MAGNETO IGNITION SYSTEM (POINTS)..63 IDENTIFICATION OF TECUMSEH IGNITION TROUBLESHOOTING ..66iiiTESTING PLUG CAUSING FREQUENT SPARK PLUG TIMING 9 INTERNAL ENGINE AND ENGINE OPERATION ..77 ENGINE OR RUNS VIBRATES PASSING OIL POWER .. , RINGS AND CONNECTING AND COVER, OIL SEAL, AND BEARING BEARING SERVICE ..88 COUNTERBALANCE SERVICE ..89 FLYWHEEL 10 ENGINE CYCLE TORQUE SPECIFICATIONS STANDARD POINT STATE AND EXTERNAL 11 EDUCATION MATERIALS AND / FRACTION CRAFTSMAN CROSS REFERENCE SUPPLEMENT INCLUDED IN BACK OF BOOK1 CHAPTER 1 GENERAL INFORMATIONENGINE IDENTIFICATIONT ecumseh engine model, specification, and serialnumbers or (date of manufacture, DOM) are stamped intothe blower housing or located on a decal on the enginein locations as illustrated (diag.)

4 1 & 2).NOTE: On some LEV Engines , a cover bezel must beremoved to provide access to the identification decal(diag. 1).The engine identification decal also provides theapplicable warranty code and oil recommendations ( ).Emissionized Engines that meet the California AirResource Board ( ) or the EnvironmentalProtection Agency ( ) standards will includeadditional required engine information on the engine decal(diag. 3).INTERPRETATION OF MODEL NUMBERThe first letter designation in a model number indicatesbasic type of Vertical ShaftLAV - Lightweight Aluminum VerticalVM- Vertical Medium FrameTVM - Tecumseh Vertical (Medium Frame)VH- Vertical Heavy Duty (Cast Iron)TVS - Tecumseh Vertical StyledTNT - Toro N TecumsehECV - Exclusive Craftsman VerticalTVXL - Tecumseh Vertical Extra LifeLEV - Low Emissions VerticalH- Horizontal ShaftHS- Horizontal Small FrameHM- Horizontal Medium FrameHHM - Horizontal Heavy Duty (Cast Iron) Medium FrameHH- Horizontal Heavy Duty (Cast Iron)ECH - Exclusive Craftsman HorizontalHSK - Horizontal Snow KingHS50 67355H SER 4091D12 COVER BEZELMODEL NUMBERDECALLOCATEDUNDER COVER(IF SO EQUIPPED)

5 PRESS IN AND LIFTHERE TO RELEASECOVER 2 The number designations following the letter indicate thehorsepower or cubic inch number following the model number is thespecification number. The last three numbers of thespecification number indicate a variation to the basicengine serial number or indicates the production model LEV115-57010B, serial 8105C as anexample, interpretation is as follows:LEV115-57010B is the model and specification numberLEVLow Emissions Vertical115 Indicates a cubic inch displacement57010 Bis the specification number used for properlyidentifying the parts of the engine8105 Cis the serial number8first digit is the year of manufacture (1998)105indicates calendar day of that year (105th dayor April 15, 1998)Crepresents the line and shift on which theengine was built at the Family: Engine Tracking InformationSHORT BLOCKSNew short blocks are identified by a tag marked (Short Block Horizontal) or (Short Block Vertical).

6 Original model identification numbers of an engine shouldalways be transferred to a new short block for correctparts identification (diag. 4).THIS SYMBOL POINTS OUT IMPORTANTSAFETY instructions WHICH IF NOTFOLLOWED COULD ENDANGER THEPERSONAL SAFETY OF YOURSELF ANDOTHERS. FOLLOW ALL REGULAR UNLEADEDOIL, SAE 30 (BELOW 32oF SAE 5W30) LEV115 57010B (D) STP185U1G1RA 8105 CTHIS ENGINE MEETS 1995-1998 CALIF. EMISSION REGULATOR FORULGE Engines AS APPLICBLEFUEL: REGULAR UNLEADED OIL: USE SEA30 LEV115 57010B (D) STP185U1G1RA 8105 CSHORT BLOCK IDENTIFICATION TAGSBV-2316 SER 4291 SERIAL NUMBERSBV OR SBH IDENTIFICATION NUMBER43 FUELT ecumseh strongly recommends the use of fresh clean unleaded regular gasoline in all Engines .

7 Unleaded gasolineburns cleaner, extends engine life and promotes better starting by reducing build-up of combustion chamber AND OXYGENATED FUELSR eformulated fuels containing no more than 10% Ethanol, 15% MTBE, 15% ETBE or premium gasoline can be usedif unleaded regular gasoline is not available. Leaded fuel may be used in countries where unleaded fuel is not USE FUEL CONTAINING OILUse a clean, high quality detergent oil. Be sure original container is marked: service SF thru SJ. The use ofmultigrade oil may increase oil consumption under high temperature, high load : DO NOT USE SAE10W40 summer (above 32 F, 0oC) use SAE 30 oil part # 730225 (1 quart, .946 liter container) in high temperature, highload is an acceptable winter (below 32 F, 0oC) use 5W30 oil part # 730226 (1 quart, .946 liter container) is an acceptable 0W30 should only be used when ambient temperature is below 0oF, :EUROPA MODELSE ngine , TVS75-120, LEV80-12021630 Vantage21630 ECV100-120, TNT100-12021630 Prisma21630V & VH50, 60, 7027810 Synergy21630 TVM 125, 14027810 Synergy "55"27810 TVM & TVXL 170, 195, 22032960 Spectra21630VM70, 80, 10032960 Futura21630VH100501500 Centura21630H & HSK30, 35, HS & HSK40, 5021630 HTL21630H, HH & HSK50, 60, 7019570 BVS21630HM & HMSK70, 80, 10026720BH Series21630 Geo Tech Series 35-5021630 Oil Change Intervals.

8 Change the oil after the first two (2) hours of operation and every 25 hours thereafter, or moreoften if operated under dusty or dirty conditions, extreme temperature, or high load Check. Check the oil each time the equipment is used or every 5 hours. Position the equipment so the engine islevel when checking the : REMOVE THE SPARK PLUG WIRE BEFORE DOING ANY SERVICE WORK ON THE Change Procedure: Locate the oil drain plug. On some units this plug is located below the deck through thebottom of the mounting flange. Other units drain at the base of the engine above the deck or frame. If access to thedrain plug is restricted by the equipment it may be necessary to drain the oil by tipping the mower in a position thatwould allow the oil to drain out of the fill units that the drain plug is accessible, remove the plug and allow the oil to drain into a proper receptacle.

9 Alwaysmake sure that drain oil is disposed of the oil is drained, reinstall the plug and fill the engine with new oil to the proper following is a minor tune-up procedure. When this procedure is completed, the engine should operate repairs may be necessary if the engine's performance remains : REMOVE THE SPARK PLUG WIRE BEFORE DOING ANY SERVICE WORK ON THE Service or replace the air cleaner as Inspect the level and condition of the oil and change or add oil as Remove the blower housing and clean all dirt, grass or debris from the intake screen, cylinder head, cylindercooling fins, carburetor, governor levers and Make sure the fuel tank, fuel filter and fuel line are clean. Replace any worn or damaged governor springs orlinkage. Make the proper governor adjustments and carburetor presets where When replacing the spark plug, consult the parts breakdown for the proper spark plug to be used in the engine beingserviced.

10 Set the spark plug gap to .030" (.762 mm) and install the spark plug in the engine. Tighten the spark plugto 15 foot pounds of torque ( Nm). If a torque wrench isn t available, screw the spark plug in as far as possible byhand, and use a spark plug wrench to turn the spark plug 1/8 to 1/4 turn further if using the old spark plug, or 1/2 turnfurther if using a new spark Make sure all ignition wires are free of abrasions or breaks and are properly routed so they will not rub on Properly reinstall the blower housing, gas tank, fuel line and air cleaner assembly if Make sure all remote cables are properly adjusted for proper operation. See chapter 4 under "Speed Controls andLinkage".9. Reinstall the spark plug wire, add fuel and oil as necessary, and start the : (IF THE ENGINE IS TO BE UNUSED FOR 30 DAYS OR MORE)CAUTION: NEVER STORE THE ENGINE WITH FUEL IN THE TANK INDOORS , IN ENCLOSED POORLYVENTILATED AREAS WHERE FUEL FUMES MAY REACH AN OPEN FLAME, SPARK OR PILOT LIGHTAS ON A FURNACE, WATER HEATER, CLOTHES DRYER OR OTHER GAS can become stale in less than 30 days and form deposits that can impede proper fuel flow and engine prevent deposits from forming, all gasoline must be removed from the fuel tank and the carburetor.