Simplicity HMSK110 Spécifications

TecumsehQuick ReferenceService InformationCovers Engine and Transmission ProductENGINES TRANSMISSIONS&TECUMSEH Service Dealer’s and Technician’s T

5Prior to 2004Model Number Conversion Chart4-CycleLEV90 - LV148EA OHH60 - OH195EALEV120 - LV195EA OHH65 - OH195EPHSSK50 - LH195SA OHSK70

6Cross Reference for Specification - To - Model Number DesignationVERTICAL 4-CYCLE ENGINESSpecification Model Number Series Number 10000 TNT100 12000

7VERTICAL 2-CYCLE ENGINES15000 H2225000 H2526000 OHH4535000 H3035400 HSK3035800 H3036700 H3045000 H & HT3545400 HSK3545800 H3546700 H35

8TORQUE SPECIFICATIONSTwo Cycle EnginesNOTESTorque specifications listed should not be confused with the torque value observed on engines which have be

9LocationInch lbs.TorqueNm Engine DesignationAluminum Light Frame EnginesTVSTNTECVLAVH/HSKHS/HSSK/LHOVRM. OVVLVLEV / LVOHH / OHRocker Arm Stud Lock Nu

10LocationInch lbs. TorqueNmEngine DesignationCast Iron EnginesHHVHOHConnecting Rod 86-110 10-12.5  Cylinder Head 180-240 20.5-27  Mounting Flan

11NOTE: Refer to Technician's Handbook, Form No. 692508 for a more detailed list.*Carburetor Troubleshooting use Technician's Handbook or C

12NOTE: Refer to Technician's Handbook, Form No. 692508 for a more detailed list.Two Cycle Troubleshooting - continuedIGNITION SYSTEMEngine Will

13Four Cycle TroubleshootingAs an aid in troubleshooting any piece of equipment, interview the customer, and review conditions and symptoms of the pro

14Four Cycle Troubleshooting - continuedNOTE: Refer to Technician's Handbook, Form No. 692509 for a more detailed list.IGNITION SYSTEMEngine Wil

IMPORTANT NOTICE!This booklet is intended for individuals who have a general understanding of internal combustion engines, adequate training, experien

15CARBURETORS AND GOVERNORSTecumseh 2-Cycle Diaphragm AdjustmentsNOTEFor meeting emission requirements, some carburetors have fixed-main or idle je

16TC/TM Governor AdjustmentThree different styles of governor systems are used on TC/TM engines. Use the following illustrations (diags. 2 and 3)

175FIXED MAIN(MIXTURE SCREW NOT FUNCTIONAL ON MOST TECUMSEH BUILT ENGINES)IDLE SPEED ADJUSTMENT SCREWIDLE MIXTURE LIMIT SCREWWalbro (WTA, WT) and Till

18Emissionized TC/Tilloston CarburetorThe Tillotson carburetor is an emissions grade carb. It has a married idle and high speed circuitry with limited

19IDLE SPEED ADJUSTMENTHIGH SPEEDADJUSTMENT8HOLDINGSCREW9STATIC GOVERNORADJUSTMENT SCREWIDLE RPMADJUSTMENTSCREWHIGH SPEED RPM ADJUSTMENT SCREW102-Cycl

2018IDLE RPM ADJUSTMENTSHIGH SPEED RPMADJUSTMENTTHIS HOLE NOT PRESENT ON ALL MODELSSPRINGVERTICAL ENGINE VARIABLE SPEED MANUAL CONTROLRPM ADJUSTMENTTH

214-Cycle Static Governor AdjustmentsThe purpose of making a static governor adjustment is to remove all free-play between the governor spool and the

22Governor Shaft Pressed In DepthWhen assembling governor shaft into a flange or cover mounting boss, refer to this chart for exposed shaft len

23Small Frame, Vertical and Horizontal*Models: LAV35,40,50 - H25,30,35 - HS40,50 - HSK - HSSK -TNT100,120 - ECH90 - TVS75,90,105,115,120

24Medium Frame HorizontalModels: HH60,70 - H50,60,70 - HM70,80,100 - HMSK - LH318 - LH358SPOOLWASHERRETAINING RINGGEAR ASSY.(GOV.)WASHERSPACERSHAFTNO

iIntroductionThis booklet contains the quick reference and basic troubleshooting information previously found on Tecumseh wall charts and in th

25OH195 / OHH TVT / VTX / OV691SPOOLGEAR ASSY.(GOV.)WASHERSHAFTSPOOLGEAR ASSY.(GOV.)WASHERCLIPwww.mymowerparts.comFor Discount Tecumseh Engine Parts

26Engine Speed and Mixture AdjustmentsNOTEStarting and operating problems may exist when engines are used at high elevations (over 4,000 feet above se

27Mixture Adjustment Procedure for Adjustable CarburetorsOnce the speed control bracket is adjusted, the main and idle fuel mixtures can be adjus

28Common Engine Speed Controls and Governor LinkagesSPEED ADJUSTMENT TABBEND TO INCREASE SPEEDBEND TO DECREASE SPEED30LOW SPEED TABHIG

2934TVS, LEV AND LV ENGINE"S WITH PRIMER STYLE CARBURETOR AND REMOTE SPEED CONTROLHIGH SPEED RPMADJUSTMENT SCREWVERTICAL SHAFT ENGINES35HIGH SPEE

30VLV Governor and LinkageStatic Adjustment - GovernorWith the engine stopped, loosen the screw holding the governor lever to the governor shaft. Push

31Medium Frame Vertical Shaft EnginesTo adjust high speed on an up/down control (diag. 41) bend the adjustment tab. Low speed is adjuste

32Engine Speed Controls and Governor LinkagesLOW SPEED ADJUSTHIGH SPEED ADJUSTTYPICAL LIGHTWEIGHT VERTICAL WITHMANUAL SPEED CONTROL44NOTE: ON REMOTEC

33Engine Speed Controls and Governor Linkages - continuedHorizontal Shaft EnginesHORIZONTAL MEDIUM FRAME52IDLE SPEED CRACK SCREWHIGH SPEED RPM ADJUSTM

34HM80-100, LH318, LH358 SERIESEngine Speed Controls and Governor Linkages - continuedHorizontal Shaft EnginesOHH - OH195 FIXED SPEED 59HIGH SPEED ADJ

iiContentsGeneral Safety Precautions ...

35Engine Speed Adjustments8-18 HP, Cast IronGovernor Adjustment for Horizontal Engines Move the remote controls to the RUN position. Loosen Screw &q

36TVT / VTX / OV691 Governors and LinkageGeneral InformationThe TVT / VTX / OV691 engine is equipped with an internal mechanical governor.

37Engine Overspeed1. If the engine runs wide open (faster than normal), shut the engine off immediately.Failure to shut off the engine if overs

38GOVERNOR SERVICEStatic Adjustment - GovernorWith the engine stopped, loosen the screw holding the governor lever to the governor shaft. Push the gov

39Synchronizing the CarburetorsSome TVT / VTX / OV691 series use twin carburetors, which MUST be synchronized if the linkage or carburetor body has

406. Connect both carburetors by attaching the link and link connector bushing clip to the # 1 carburetor.7. Hold the throttle plate on the #2 ca

41ELECTRICAL SYSTEMS81OIL SHUTDOWN SWITCH8382TO IGNITIONTO LOW OILSENSORGREENIDENTIFICATIONMARKSwitches, Sensors and SolenoidsLow Oil Shutdown Switche

42Switches, Sensors, and Solenoids - continuedLow Oil SensorThis sensor must use a #194 bulb, resistance of the bulb MUST be .27 ampere

43WiringCONDITION. All wiring must be fully insulated between connection points, securely fastened and free of foreign material (such as rust

44DiodesIn order to charge a battery it is necessary to convert alternating current (A.C.) to direct current (D.C.) This is accomplished by usin

iii VLV Governor and Linkage ...30

45Key SwitchesSwitches are the common point on the vehicle where most of the wiring centrally comes together. There are many varieties

46Continuity w / keyin start positionContinuity w / keyin off positionNO Continuity inany key positionContinuity w / key in run positionSwitch AConnec

47Charging System354933496034990350 MilliampRedRedBlack3 Amp A.C.610981RedGreenBlack18 Watt A.C. Lighting611111Yellow wire under sleeveRedGreen3 Amp D

483 Amp D.C.611113RedDIODEGreenGreen7 Amp D.C.610818* Uses regulator/rectifier 610749YellowYellowGreen3 Amp D.C. - 5 Amp A.C.611104RedYellowDIODE* Us

49* Uses regulator/rectifier 610749Charging System - continued* Uses regulator/rectifier 611098; an open circuit D.C. voltage check cannot be made

5020 Amp Alternator* Uses regulator/rectifier 610996 or 610907A; depending on spec. number; an open circuit D.C. voltage check cannot be ma

51Testing ProceduresWhen testing Alternator/Charging System: DO NOT disconnect positive lead(s) from the battery while the engine is running. With

52350 Milliamp Charging SystemCHECKING THE SYSTEM: The battery must be in the circuit to perform the test properly. Set the voltmeter to the 0-20 D.C.

53#4414 BULBYellowYellow971 Amp (18 Watt) Add-on AlternatorCHECKING THE SYSTEM: To check the system, disconnect the plug from the rest of the li

54100RedGreenDIODEPROBE (+)RedGreenGROUNDPROBE (+)992 and 3 Amp DC Alternator System - Diode in HarnessModels: H30-35, HS40, H50-60, HH50-60, H

1General Safety PrecautionsE. Always Provide Adequate VentilationTo avoid serious injury or death, always ensure that you are working in a prop

55101+-102TO ENGINE GROUNDFUSEPROBED.C. VOLTMETERGreenYellowYellow103RECTIFIER PANEL MOUNTED ON ENGINEA.C. VOLTMETERFUSE3 Amp D.C. Alternator System

563 Amp D.C. 5 Amp A.C. AlternatorModels: OVM/OVXL 12.5, OHV12.5-18.0, OV358, OV490This unit combines a 3 Amp D.C. system used to charge a batter

57YellowRedDIODEA.C.110108YellowRedDIODEA.C.DIODERedD.C.109YellowModels OVM/OVXL/OHV(Read between Engine and Diode, diag. 108 and 109)With the

58All ModelsWith the engine running the minimum values should read:2500 R.P.M. - 20.0 Volts A.C.3000 R.P.M. - 25.0 Volts A.C.3300 R.P.M. - 26.5

595 Amp Alternator System Regulator-Rectifier Under Blower HousingCHECKING THE SYSTEM: An open circuit D.C. voltage check cannot be made w

60116A.C. VOLTMETERYellowRedINSERT PROBES INTO CONNECTOR SLOTS. DO NOT REMOVECONNECTOR WIRESCAUTION: BLOWER HOUSING MUST BE INSTALLED WHEN RUNNING ENG

61117A.C. OUTPUT YELLOWA.C.119A.C.REGULATOR-RECTIFIER MUST BE GROUNDEDD.C. VOLTMETERB + TERMINAL WIRE11810 Amp A.C. AlternatorCHECKING THE SYSTEM: U

62121YELLOW(A.C. LEAD)GREEN(MAGNETO SHUT-OFF)YELLOW(A.C. LEAD)A.C.YellowYellowGreenRedGREEN(MAGNETO SHUT-OFF)RED(D.C. WIRE)RECT./REG.16 Amp Alternator

63Standard Wiring Harness Connector AdaptersIn an effort to standardize all of the connectors on our wiring harnesses, we have created new connectors

64TECUMSEH AND PEERLESS®MODEL AND SPECIFICATION NUMBERSThe following information is being provided to assist you in locating and recording your Tecums

2I. Operate Equipment SafelyOperation of equipment presented for service can be hazardous. To avoid serious injury or death, DO NOT operate equi

65Various Styles of Identification Used OnTecumseh and Peerless Transmission, Transaxle andGear ProductsEarly Models were not identified with a model nu

66Transaxle TroubleshootingIn-Line Shift Models (i.e. 800, 820, 915, 920, 930, MST)Transaxle troubleshooting can be a mystery to many technicia

67Hard Shifting Transaxles and Drive BeltsOften hard shifting is blamed on an internal problem in the transaxle. To determine if the problem is transa

68NOTEBefore troubleshooting any system problem, see original equipment manufacturer’s (O.E.M.) instructions.Make your troubleshooting easier by prepa

69SYMPTOMPROBLEM CORRECTIVE ACTIONUNIT IS NOISYFinal drive gear noiseCheck, add gear oil to final driveCheck, replace worn gearsCheck, replace worn bea

70Check Fluid Level on Hydrostatic Transmission• After THROUGHLY cleaning the outside of the case near the expansion tank, and the chassis. Carefully

711800 / VST TroubleshootingThe information on this page has been provided to help understand the internal operation of the VST. Do not use this in

72Replacing Bellows or Adding OilThe following step by step procedure MUST be followed exactly if a proper repair is to be done.1. Before assuming

735. To prepare the “NEW” bellows for installation, place the bellows on the cover as shown. Then compress the bellows and place a piece of tape over

74TRANSAXLESModelNo.Quantity 301 Non-Serviceable 600 24 oz./710 ml Oil 800 30 oz./887 ml Grease 801 36 oz./1065 ml Grease 820 36 oz./1065 ml

3General InformationThe following information is being provided to assist you in locating and recording your engine model and specification numbers. Th

75TORQUE VALUEPART MODELSAFFECTED IN-LBS FT-LBS NmBolt 5/16-18 (Housing)Nut 5/16-18 (Drive Gear)100 Series100 Series228-264120-15619-2210-1325.8 - 29

76Engine Model ml Oz.LH195SA, LH195SP 630 21LH318SA, LH358SA 720 26LV148EA, LV148SA 630 21LV195EA 630 21OH195EA, OH195EP 630 21OH195SA, OH

77TECUMSEH 2-CYCLE ENGINE OIL REQUIREMENTSThe proper type and ratio of 2-cycle oil is critical to long life and low maintenance of the eng

78Service Number 34046RL86C† OHM120‡ OH318SA (OHSK110), OH358SA (OHSK120-130) OVM120* OVXL120* OVXL/C120* OVXL125Note: * OVXL models with specifica

79 Champion Autolite35395 - RJ19LM NA33636 - RJ17LM 245611100 - RCJ-6Y 2974611049 - RCJ-8Y 2976NOTE: THE SERVICE NUMBERS LISTED

80Head Bolt Torque SequenceLEV, TVS75-120, H, HSK30-70, HS, HSSK40-50, V50-70, TVXL105-115, TVM125-140Torque bolts in 50 in. lb. (5.5 Nm) increme

81Valve ClearanceValve Clearance (Cold) * ±.002 (.05 mm)Engine Model Intake Valve Exhaust ValveLAV35,50LEV80-120, LV195TVS75-120ECV & TNT100-12

82Recoil Quick Reference PartsDuring the past few years we have introduced you to several new styles of recoil assemblies. These recoils are used

83Flywheel Key Quick ReferenceIdentification Chart - Keys are shown actual size.650592Steel32589Steel611191Steel650455Steel611054Steel611298Steel650496

84Primer Bulb IdentificationCaution must be used when replacing carburetor primer bulbs. Using the wrong primer bulb could cause hard starting a

4Model Numbering System for Current Tecumseh’s Full Engine LineReviewing The Engine ID LabelEffective with the 2004 Model Year, we have changes to the

85Piston Ring InstallationPiston ring orientation: Compression rings may have either an inside chamfer or an outside notch. Inside chamfers always fac

86Quick Reference for DipsticksNOTE: OBS abbreviation stands for obsolete.SCREW-IN DIPSTICKFEMALE THR’D, PLASTIC TUBESERVICE NO. ID NO.35507 1043555

87Metric Conversions Factors (approximate)Conversions TO Metric MeasuresSymbol When You Know Multiply By To Find SymbolLENGTH in. inches 25.4 millimet

Notes_________________________________________________________________________________________________________________________________________________

Form No. 695933 R 10/05 Litho in U.S.A.Tecumseh Power Company900 North StreetGrafton, WI 53024Phone: 262-377-2700Fax: 262-377-4485Tecumseh Europa