Tecumseh VM70 - 100 Manual
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Tecumseh VM70-100 Technician S Handbook
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Troubleshooting and Service Information
ENGINES & TRANSMISSIONS
TABLE OF CONTENTS
Safety Definitions.... ii General Safety Precautions.... iii General Information..... 3 Reviewing The Engine ID Label.... 4 4-Cycle Quick Reference - Model Letter Designation Pre-2004 Production.. 5 Spark Plug Replacement (4-Cycle).... 6 Spark Plug Replacement (2-Cycle and Europa)... 7 Fuel Recommendations.... 8-9 Tecumseh 4-Cycle Lubrication Requirements... 10 4-Cycle Troubleshooting.... 11-12 Tecumseh 2-Cycle Engine Oil Requirements.... 13 2-Cycle Troubleshooting.... 14-15 4-Cycle Cross Reference for Specification-To-Model Number Designation (Vertical Engines). 16 4-Cycle Cross Reference for Specification-To-Model Number Designation (Horizontal Engines). 17 2-Cycle Cross Reference for Specification-To-Model Number Designation (Vertical and Horizontal Engines).... 17 Tecumseh and Peerless Model and Specification Numbers... 18-19 Basic Gear Drive Troubleshooting.... 20-21 Tecumseh and Peerless Transmission, Transaxle and Gear Products... 22 LTH 2000 Series Troubleshooting Chart.... 22 LTH 2000 Series Hydrostatic Transaxle Troubleshooting... 22-/ VST Troubleshooting..... 24 Tecumseh and Peerless Lubrication Requirements... 25 Repair Manuals..... 26
2004 Tecumseh Power Company. All Rights Reserved
The information in this guide is intended to assist individuals who are knowledgeable in basic engine repair and maintenance. If you are unfamiliar with two and four cycle engine operation and maintenance, DO NOT attempt any maintenance or repairs. Contact your local Tecumseh Servicing Dealer for assistance.
IMPORTANT NOTICE! Safety Definitions
Statements in this manual preceded by the following words and graphics are of special significance:
Tecumseh Contact Information
For engine adjustments, repairs or warranty service, contact your nearest Authorized Tecumseh Servicing Dealer. Find them on our website at www.TecumsehPower.com or call Tecumseh Power Company at 1-800-558-5402 or 262-377-2700 if you are located outside the U.S.
WARNING indicates a potentially hazardous situation which if not avoided, could result in death or serious injury. NOTE Refers to important information and is placed in italic type. It is recommended that you take special notice of all items discussed on the next two pages and wear the appropriate safety equipment. Before operating an engine it is your responsibility to read the Operators Manual. Follow these basic rules for your personal safety: Keep this manual handy at all times for future reference. Read it carefully and familiarize yourself with operating, maintenance, components and safety instructions.
Notice Regarding Emissions
Engines which are certified to comply with California and U.S. EPA emission regulations for SORE (Small Off Road Equipment), are certified to operate on regular unleaded gasoline, and may include the following emission control systems: (EM) Engine Modification and (TWC) Three-Way Catalyst (if so equipped).
General Safety Precautions A. Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon monoxide, a deadly gas. Breathing carbon monoxide can cause headaches, dizziness, drowsiness, nausea, confusion and eventually death.
Use only an approved red GASOLINE container to store and dispense fuel. Tecumseh recommends purchasing gasoline in containers with a capacity of 2.5 gallons or less. Small containers are easier to handle and help eliminate spillage during refueling. DO NOT pour fuel from engine or siphon fuel by mouth.
C. Adult Supervision of Operation, Refueling and Maintenance
Carbon monoxide is a colorless, odorless, tasteless gas which may be present even if you do not see or smell any engine exhaust. Deadly levels of carbon monoxide can collect rapidly and you can quickly be overcome and unable to save yourself. Also, deadly levels of carbon monoxide can linger for hours or days in enclosed or poorly-ventilated areas. If you experience any symptoms of carbon monoxide poisoning, leave the area immediately, get fresh air, and SEEK MEDICAL TREATMENT. To prevent serious injury or death from carbon monoxide: NEVER run engine indoors. Even if you try to ventilate engine exhaust with fans or open windows and doors, carbon monoxide can rapidly reach dangerous levels. NEVER run engine in poorly-ventilated or partially enclosed areas such as barns, garages, basements, carports, under dwellings, or in pits. NEVER run engine outdoors where engine exhaust can be drawn into a building through openings such as windows and doors. Not everyone who is allowed to use an engine is capable of safely and responsibly operating, maintaining and/or fueling it. Tecumseh recommends the following: An adult should fuel the engine. NEVER allow children to refuel an engine. An adult should perform maintenance on an engine. Only allow children to perform maintenance if an adult has determined they are experienced and capable of such operation. An adult should start the engine. Only allow children to start the engine if an adult has determined they are experienced and capable of such operation. To avoid unsupervised operation of the engine, especially by children, NEVER leave it unattended when it is running.
D. Stay Away from Rotating Parts
NEVER operate an engine with an unguarded engine shaft. The equipment manufacturer may attach a sprocket and chain or pulley and belt to the engine shaft. If these parts are not properly guarded, or if you are not sure whether they are properly guarded, DO NOT use your engine; contact the equipment manufacturer. Hands, feet, hair, jewelry, clothing, etc. can become entangled in rotating parts, leading to serious injury or death. To avoid serious injury or death, be sure the flywheel guard is in place.
B. Avoid Gasoline Fires
Gasoline (fuel) vapors are highly flammable and can explode. Fuel vapors can spread and be ignited by a spark or flame many feet away from engine. To prevent injury or death from fuel fires, follow these instructions: NEVER store engine with fuel in fuel tank inside a building with potential sources of ignition such as hot water and space heaters, clothes dryers, electric motors, etc. NEVER remove fuel cap or add fuel when engine is running. NEVER start or operate the engine with fuel fill cap removed. Allow engine to cool before refueling. NEVER fill fuel tank indoors. Fill fuel tank outdoors in a well-ventilated area. DO NOT smoke while refueling tank.
The following information is being provided to assist you in locating and recording your engine model and specification numbers. This information will be needed to use this book or obtain parts from a local Tecumseh dealer.
Model Numbering System for Tecumsehs Full Engine Line 2004 Production and Later
LOCATING AND READING ENGINE MODEL AND SPECIFICATION
THE FOLLOWING WILL BE NEEDED TO LOCATE PARTS FOR YOUR ENGINE.
Model TVM195 Specification 150288G SPEC NO. D.O.M (DOM) 8150C
Typical Engine I.D. Label
TECUMSEH POWER COMPANY
THIS ENGINE MEETS 1995-1998 CALIF/US EPA PH1 APPLICABLE EMISSION REGULATIONS FOR ULGE ENGINES FUEL REGULAR UNLEADED OIL SAE 30
TVM195 150288G (E) STP318U1G2EA C
ENGINE MODEL NUMBER LOCATED UNDER COVER
ENGINE MODEL NUMBER LOCATIONS
Reviewing The Engine ID Label
Effective with the 2004 Model Year, we have changes to the engine I.D. label on our products. The following pages will explain the information contained on the label dependent on the age of your product.
Specification Number The numbers following the model number make up the specification number. Using model LV195EA-361541B, as an example, interpretation is as follows: LV195EA-361541B is the model and specification number.
L V 195 E A - 361541B
Warranty Code Is the specification number used for properly identifying the parts of the engine Indicates a standard power configuration Indicates EPA/CARB compliant Indicates a 195 cc displacement Indicates a vertical shaft configuration Indicates an L-Head, side valve configuration
Date of Manufacture The Date of Manufacture (D.O.M.) indicates the production date. For this example, 03188BC0010 is the D.O.M. (Date of Manufacture).
Year 2003 Day of Year 188th Mfg Facility Assembly Line / Shift Individual Serial # 10th unit built
Typical Engine I.D. Label Locations
CODE 1st Space - Valve Orientation T = Two Cycle O = Overhead Valve L = L-Head 2nd Space - Crank Orientation V = Vertical H = Horizontal M = Multi-position 3rd, 4th and 5th Space - Displacement in cc 6th Space - Emissions Class E = 50 State/Global Emissions Compliant X = Not for sale in California, except exempt applications S = Snow Emission Compliant 7th Space - Engine Specifics A = Standard P = Powered Up
Model Conversion Chart
LEV90 LEV120 HSSK50 HSSK55 VSK90 OHV135 OHV180 TVT691 VTX691 LV148EA LV195EA LH195SA LH195SP LV148SA OV358EA OV490EA OV691EA OV691EP OHH60 OHH65 OHSK70 OHSK75 HMSK90 HMSK110 OHSK110 OHSK130 OHM110 OH195EA OH195EP OH195SA OH195SP LH318SA LH358SA OH318SA OH358SA OH318EA
TC300 HSK870 HSK600 AV520 TM049XA TH139SP TH098SA TV085XA
4-Cycle Quick Reference - Model Letter Designation
ECH ECV H HH HHM HM HMSK HMXL HS HSSK HXL LAV LEV OH OHH OHM OHS OHV Exclusive Craftsman Horizontal Exclusive Craftsman Vertical Horizontal Shaft Horizontal Heavy Duty (Cast Iron) Horizontal Heavy Duty (Cast Iron) (Medium Frame) Horizontal Medium Frame Horizontal Medium Frame (Snow King) Horizontal Medium Frame (Extra Life) Horizontal Small Frame Horizontal Small Frame (Snow King) Horizontal (Extra Life) Lightweight Aluminum Frame Vertical Low Emissions Vertical Overhead Valve Heavy Duty (Cast Iron) Overhead Valve Horizontal Overhead Valve Heavy Duty Horizontal (Medium Frame) Overhead Valve Horizontal (Snow King) Overhead Valve Vertical (Medium Frame) OVM - Overhead Valve Vertical (Medium Frame) OVRM - Overhead Valve Vertical (Small Frame) (Rotary Mower) OVXL - Overhead Valve Vertical (Medium Frame) (Extra Life) TNT - Toro N Tecumseh (Toro Exclusive Series) TVEM - Tecumseh Vertical European Model TVM - Tecumseh Vertical (Medium Frame) (Replaces V & VM) TVS - Tecumseh Vertical Styled TVT - Tecumseh Vertical Twin TVXL - Tecumseh Vertical (Extra Life) V - Vertical Shaft VH - Vertical Heavy Duty (Cast Iron) VLV - Vector Lightweight Vertical VLXL - Vector Lightweight Vertical (Extra Life) VM - Vertical Shaft (Medium Frame) VSK - Vertical Snow King VTX - Vertical Twin
Spark Plug Replacement
NOTE: Only models which will continue to be manufactured long term will have an updated Model designation.
4-CYCLE SPARK PLUG
Service Number 35395
RJ19LM ECV100-120 HMSK70, LH318SA (HMSK80), HMSK90 HSK30-70 HSSK40, LH195SA (HSSK50), LH195SP (HSSK55) LH358SA (HMSK100), HMSK110 LEV80, LV148EA (LEV90), LV195EA (LEV120) LV148SA (VSK90), VSK100 TNT100 TNT120 TVS75-120 TVXL90-120
Service Number 33636
RJ17LM H30-80 HM70-100 HS40-50 TVM195-220 TVXL195-220 VLV-all
Service Number 34277
RJ8C H22 H25 HH40-120 HHM80 HMXL70 HT30 HT35 HXL35 LAV25-50 TVM125-170 V40-80 VH40-100 VM70-100
Service Number 35552
RL82C HH140-160 OH120-160
Service Number 34645
OH318EA (OHM90-110) OHM120 OH195EA (OHH60), OH195EP (OHH65) OHH/OHSK40-130 OH195SA (OHSK70), OH195SP (OHSK75) OH318SA (OHSK110), OH358SA (OHSK120-130) OH180 OV195EA OV358EA (OHV110-135), OV490EA (OHV140-180) OV691EP (VTX691, TVT691) OVM120 * OVXL120 * OVXL/C120 * OVXL125
THE SERVICE NUMBERS LISTED BELOW WILL GIVE CORRESPONDING CHAMPION AND AUTOLITE SUBSTITUTIONS. Champion RJ-19LM RJ-19LM4 RL-82C RL-86C RN-4C RN-4C4 RJ-17LM RJ-8C Autolite 245 304
Note: * OVXL models with specification nos. below 202700 use RL86C.
OHM120 models with specification nos. below 224000 use RL86C. OH318SA (OHSK110), OH358SA (OHSK120- 130) models with specification nos. below 223000 use RL86C.
*NON CANADIAN APPLICATION
SPARK PLUG AIR GAP ON ALL MODELS IS.030 (.762 mm)
Service Number 34046
OHM120 OH318SA (OHSK110), OH358SA (OHSK120-130) OVM120 * OVXL120 * OVXL/C120 * OVXL125
Note: * OVXL models with specification nos. 202700, 203000 and up, use RN4C.
3/8" 9.525 mm
1/2" 12.700 mm
3/4" 19.050 mm
OHM120 models with specification nos. 224000 and up, use RN4C. OHSK110, OHSK120-130 models with specification nos. 223000 and up, use RN4C.
NOTE: Not all spark plugs have the same heat range or reach. Using an incorrect spark plug can cause severe engine damage or poor performance. Tecumseh uses all three of the reaches shown.
FOR TWO CYCLE INFORMATION REFER TO NEXT PAGE.
Note: If you need assistance locating your engine model numbers please check page 3 or 4.
2-CYCLE SPARK PLUG
Service Number 611100
TC300 TCH300 TM049XA
AV600 AV520 TVS600 TV085XA
Service Number 611049
AH520 AH600 HSK840 HXL840 TC200 TCH200 Type 1500 TH098SA HSK600 HSK635 TH139SA HSK845, 850 TH139SP HSK870
EUROPA MODELS 4-CYCLE SPARK PLUG
All Horizontal Models BV BVL BVS Centura Futura HTL LAV Legend Premier 153/173 Prisma Spectra Synergy Vantage
FUEL TREATMENT 1. Add fuel stabilizer according to manufacturers instructions. 2. Run engine at least 10 minutes after adding stabilizer to allow it to reach carburetor. 3. Instead of using a fuel preservative/stabilizer, you can empty the fuel tank as described under "Extended Storage.
Fuel Recommendations - continued
EXTENDED STORAGE NOTES Clean debris from engine before draining fuel from carburetor. If you have prepared your fuel for short term storage it is not necessary to drain fuel that contains stabilizer from your carburetor. To avoid severe injury or death, DO NOT pour fuel from engine or siphon fuel by mouth. 1. To prevent serious injury from fuel fires, empty fuel tank by running engine until it stops from lack of fuel. DO NOT attempt to pour fuel from engine. 2. Run the engine while waiting until the remaining fuel is consumed. NEVER leave the engine unattended when it is running and NEVER run engine in enclosed areas.
FUEL ADDITIVES Only fuel additives such as Tecumsehs fuel stabilizer Part No. 730245A or liquid varieties can be used when mixed properly. For winter applications, Isopropyl alcohol fuel dryers may be used in the fuel system but must be mixed at the proper ratio recommended by the manufacturer. NEVER USE METHANOL BASED FUEL DRYERS.
Tecumseh 4-Cycle Lubrication Requirements
Tecumseh recommends the use of a high quality, brand name oil with a minimum classification of SL/SJ. Very few air cooled engines have any type of oil filtration system, making regular oil changes critical to remove impurities from the engine and maximize engine life. Consult the operator's or repair manual for the oil change interval and viscosity based on equipment operating temperature.
Tecumseh Recommended Oil Usage Straight Grade Tecumseh Part No. 730225A or SAE30W Multi Grade Tecumseh Part No. 730226A or SAE5W30 or SAE10W Synthetic Tecumseh Part No. 730263 or SAE0W30 -20 F 20 F 0F O O O -20 C -10 C -30 C
40 F 10 C
TECUMSEH 4-CYCLE ENGINE OIL
shown with model names prior to 2004
CLASSIFICATIONS: SL/SJ" DO NOT USE 10W40 CAPACITIES: Engine Model ml All LAV, TVS, LEV, OVRM.. 630 ECV, TNT... 630 V & VH50-70.. 810 TVM 125, 140... 810 TVM 170-220... 960 VM70-100, HHM80.. 960 VH100... 1500 All VLV... 810 VSK90-100... 630 OVM120, OVXL120, 125.. 960 OHV11-13 without filter.. 960 OHV11-13 with filter.. 1170 OHV13.5-17 with filter.. 1800 OHV13.5-17 without filter.. 1650 TVT691 with filter.. 2150 TVT691 without filter.. 1950 H, HSK30-35.. 630 HS, HSSK40-50.. 630 H, HH, HSK50-70.. 570 OHH/OHSK50-70.. 630 HMSK, HM70-100... 720 OHSK80-100.. 720 OHM120, OHSK110*-130.. 840 HH100,120, OH120-180. 1560
MIXES EASY DOES NOT SEPARATE PREMIUM BLEND FOR BOTH AIR AND WATER COOLED ENGINES ENSURES CYLINDER WALL LUBRICATION
ENGINE FUEL MIX U.S. METRIC METRIC Amount of Oil Amount of Oil Gasoline To Be Added Petrol To Be Added 24:Gallon 5 oz. 4 Liters 167 ml 2 Gallons 11 oz. 8 Liters 333 ml 5 Gallons 27 oz. 20 Liters 833 ml U.S. 32:Gallon 2 Gallons 5 Gallons 50:Gallon 2 Gallons 5 Gallons 4 oz. 8 oz. 20 oz. 2.5 oz. 5 oz. 13 oz. 4 Liters 8 Liters 20 Liters 4 Liters 8 Liters 20 Liters 125 ml 250 ml 625 ml 80 ml 160 ml 400 ml
The following is provided as a basic troubleshooting guide to any piece of equipment. Its use requires a complete review of all conditions and symptoms. Always examine the exterior for clues: leaks, excessive dirt, or obvious damage. Some repairs will require the assistance of a Tecumseh Servicing Dealer.
Defective spark plug
Review with customer priming or choking procedure (3-5 primes, if equipped, waiting 2 seconds between each prime)
Restricted air filter
Improper fuel mix or stale fuel
Exhaust ports plugged
Check fuel supply and fuel cap vent Restriction in fuel system (filter,screen) Poor compression
Carburetion problems due to flooding, over priming, etc. Ignition System Use Tester 670366
Should more extensive repair be needed, we recommend you contact a local Tecumseh Servicing Dealer for repair. Repair manuals are also available from your local dealer or direct from Tecumseh. A complete list of the available manuals can be found at the end of this book. 14
2-Cycle Troubleshooting - continued
Engine Will Not Start Check for spark Using Tester 670366
Replace spark plug Check flywheel for correct key, damaged key or key adaptor
Set proper air gap on external coil Equipment problem, check switches, wiring and equipment controls
Parasitic load too high
Test ignition module
Cross Reference for Specification - To - Model Number Designation
This cross reference chart allows you to determine an engine Model Number if you only have the Specification Number. Note that some Specification Number Series are current with our 2004 and later model numbering system. VERTICAL 4-CYCLE ENGINES
Specification Number Series Model Equivalent 2004 Number & Later Model Number TNT100 TNT120 LAV25, OVRM55 OVRM105 OVRM60 OVRM60 OVRM65, OVRM120 OV195EA (RM) OV195EA (Utility) LAV30 TVS75 LAV35 OVRM905 (Sears Only) OVRM40, OVRM45 (Premier Engine) OVRM40 (High Tech Look) TVS90 TVS90 (Premier Engine) TVS90, TVXL90 TVS90 (High Tech Look) TVS100 TVS100 (Premier Engine) TVS100 TVS90, TVXL90 TVS90 TVS90 V40 LAV40 OVRM50, OVRM55 (Premier Engine) OVRM50, OVRM55 OVRM50, OVRM55 (High Tech Look) TVS105 TVS105 (Premier Engine) TVS105 TVS105 (High Tech Look) TVXL105 TVS105, TVS & TVXL115 TVS105, TVS115 (Premier Engine) TVS115 TVS105, TVS115 (High Tech Look) TVS & TVXL115 TVS115 (Premier Engine) TVS115 TVS115 (High Tech Look) V50, TVM125 TVS & TVXL115 TVS & TVXL115 TVS115 TVS115 LAV50 LAV50 & TVS115 TVS120 TVS120, TVEM120 TVS120 (Premier Engine) TVS120 (High Tech Look) TVS120 TVS120 V60, TVM140 VH40 VH50 VH60 V70 VM70, TVM170 TVXL170 VH70 Specification Number Series Model Equivalent 2004 Number & Later Model Number ECV100 ECV105 VH80 VH100 V & VM80, TVM195 TVM & TVXL195 TVM195 ECV110, TVM195 TVM220 ECV120 VM100, TVM220 TVM & TVXL220 TVM220 OVM120 OVXL120, OVXL125 OVXL120 (I/C) OHV11, OHV115 OVXL125 OHV115 OVXL125 (I/C) OHV12, OVXL120 (Tec.1200) OHV125, OVXL125 (Tec1250) OHV13 OVXL125 (Tec.1250I/C), OHV13/135 OHV14/140 OHV145 OHV15/150 OHV16/160 OHV165 OHV155 OHV17/170 OHV175 OHV110 OHV115 OHV120 OHV125 OHV130 OHV135 (Sm. Enduro) ____ OV358EA OHV180 (Lg. Enduro) ____ OV490EA LEV90 _________________ LV148EA VSK90 _________________ LV148SA LEV100 LEV100 VSK100 LEV100 LEV100 LEV105 LEV105 VSK105 LEV115 LEV115 LEV115 LEV120 _______________________ VSK120 LEV120 (Utility) __________ LV195EA LEV120 (RM) ____________ LV195EA VLV40 ULT, VLV B24, VLXL50, & VLV126 ULT, VLV, VLXL55, & VLV126 ULT, VLV60, VLV65, & VLV126 VLV65, VLV66 TVT691 TVT691 (Twin) __________ OV691EA VTX691 (Twin) __________ OV691EP
This cross reference chart allows you to determine an engine Model Number if you only have the Specification Number. Note that some Specification Number Series are current with our 2004 and later model numbering system. HORIZONTAL 4-CYCLE ENGINES
Specification Number Series 115000 Model Equivalent 2004 Number & Later Model Number H22 H25 OHH45 H30 HSK30 H30 H30 H & HT35 HSK35 H35 H35 HXL35 H40 HS & HSSK40 HSK40 H40 H40 HSSK40 H50 HSK50 HS & HSSK50 ___________ LH195SA HSSK55 ________________ LH195SP OHH50 OHSK50 OHH55 OHSK55 OHH60 _________________ OH195EA OHSK60 OHH65 OHH65 _________________ OH195EP OHSK65 OHH70 OHSK70 (Premium) _______ OH195SA OHSK75 (Premium) _______ OH195SP H60 HSK60 HH40 HH50 HH60 HH80 HH100 Specification Number Series Model Equivalent 2004 Number & Later Model Number HH120 H70 HSK70 HM & HMSK70 HMXL70 HH70 ECH90 H & HM80 HMSK80 HM85 HM & HMSK85 HM90 HMSK90 ________________ LH318SA HM & HMSK100 __________ LH358SA HMSK105 HMSK110 HH & OH140 HH150 & 160 OH160 OH120 OH180 HHM80 OHM120 OHSK110 OHSK80 OHSK90 OHSK100 OHSK110 OHSK115 (Premium) ______ OH318SA OHSK120 OHM90 OHM100 OHM110 ________________ OH318EA OHSK90 OHSK110 OHSK120 OHSK125 OHSK130 (Premium) ______ OH358SA LH412SA OHM120
VERTICAL 2-CYCLE ENGINES
Specification Model Number Series Number Equivalent 2004 & Later Model Number
HORIZONTAL 2-CYCLE ENGINES
Specification Model Number Series Number 8700 Equivalent 2004 & Later Model Number
TC300 _________________ TM049XA AV520 _________________ TV085XA
HSK635 ________________ TH098SA HSK850 ________________ TH139SA HSK870 ________________ TH139SP
Tecumseh and Peerless Model and Specification Numbers
The following information is being provided to assist you in locating and recording your Tecumseh transmission components model and specification numbers. This information will be needed to use this book or obtain parts from a local Tecumseh dealer.
RIGHT ANGLE DRIVES 300 SERIES 1200 SERIES MST A 700 SERIES 600 SERIES A A or B A or B A A 100 SERIES 1100 SERIES A or B
A or B 810 SERIES 801 SERIES
2600 SERIES 2800 SERIES
A A 910 SERIES A 1300 SERIES A A 2300 SERIES 820 SERIES 2400 SERIES 915 SERIES A 2500 SERIES
900 SERIES 920 SERIES 930 SERIES
A or B
MST 850 SERIES
LTH SERIES 2100 SERIES
THE MODEL NUMBER WILL BE FOUND ON: A. Metal tag or decal attached to unit in the location shown. B. Stamped on unit in the location shown.
Various Styles of Identification Used On Tecumseh and Peerless Transmission, Transaxle and Gear Products
MOD 506 PEERLESS 1374
Individual Serial Number Manufactured on the 275th Day Manufactured in 1991
MODEL NUMBER REQUIRED FOR WARRANTY
SPECIFICATION NUMBER REQUIRED FOR WARRANTY
D.O.M. (DATE OF MANUFACTURE) ORIGINAL SERIAL NUMBER
Early Models were not identified with a model number on the unit.
Basic Gear Drive Troubleshooting
NOTE Before troubleshooting any system problem, see original equipment manufacturers (O.E.M.) instructions. Make your troubleshooting easier by preparing as follows: Work in a clean, well-lighted place. Keep proper tools and materials nearby. Keep an adequate supply of clean petroleum-based solvent. To avoid carbon monoxide poisoning, make sure engine is outdoors in a well-ventilated area. Some maintenance procedures can not be performed until the vehicle wheels are secured and off the ground. Failure to do so could result in death or serious injury to yourself and/or bystanders. DO NOT attempt any maintenance procedures with the engine running. Doing so could result in death or serious injury to yourself and/or bystanders. Use care when performing inspection of the drive belt assembly including all vehicle linkage. Failure to do so could result in death or serious injury to yourself and/or bystanders.
Hard Shifting Transaxles and Drive Belts
Often hard shifting is blamed on an internal problem in the transaxle. To determine if the problem is transaxle or equipment related make these simple checks. 1. Turn the unit off so that all power is removed to the transaxle. 2. With the unit off, move the shift lever through the shift gate. Movement of the lever should have only slight resistance. The shifting effort should be equal when the engine is off and when running. If the unit is difficult to shift the problem would be internal and the transaxle would need to be removed and repaired. 3. If the unit shifts with ease, check the following areas that would be equipment related. Check to see if the belt is releasing from the pulley on the engine and transmission / transaxle, it may require that the belt guides be repositioned. The distance required from the pulley to the guide is typically 1/16" to 3/16" (1.6 mm - 4.8 mm), always check the O.E.M. specs.
1/16" to 3/16" (1.6 mm - 4.8 mm)
THIS DIMENSION VARIES FROM EACH MANUFACTURER
For proper declutching to occur, it is very important that the engine belt guide be set at a predetermined clearance when engaged (set by the manufacturer) and away from the belt with the belt engaged.
With clutch disengaged, it is very important that the belt blossoms away from the engine pulley. Belt must stop turning before transaxle shifting can occur.
Improper belt or belt guide clearance will not allow the belt to disengage, causing internal transmission damage. 20
Basic Gear Drive Troubleshooting - continued
4. Check to see if the pulley is damaged and may not be releasing the belt. 5. Confirm the correct length and type of belt, as recommended by the manufacturer, is installed. 6. Check the brake/clutch pedal to make sure that when the pedal is depressed that the idler pulley is releasing the belt tension before it applies the brake. If this does not happen the unit will still be under a load and be impossible to shift. 7. The final area to check would be for damaged or binding shift linkage. Hard shifting with the engine off could be caused by: 1. Shift linkage out of adjustment. 2. Corrosion in the transaxle or transmission. 3. Damaged shift keys, gears, or shifter brake shaft. 4. Belt guides missing or improperly adjusted (see equipment manufacturer specs). Unit seems to slip: 1. Check for proper belt adjustment (consult O.E.M. operator's manual). 2. Check for proper clutch/brake adjustment (consult O.E.M. operator's manual). 3. Check pulley condition and wheels for sheared or damaged keys. 4. Check drive belt condition, if glazed or worn, replace it. 5. Possible internal transmission damage. We suggest you contact a local Tecumseh Servicing Dealer.
Tecumseh and Peerless Transmission, Transaxle and Gear Products
LTH-2000 Series Troubleshooting Chart
Tecumsehs lawn tractor hydrostatic transaxle (LTH) includes a hydrostatic transmission attached to a final drive. Use of this troubleshooting chart will aid in determining the source of a problem; the hydrostatic transmission, final drive or vehicle's belt drive and/or linkage systems.
Tecumseh LTH-2000 Series Hydrostatic Transaxle Troubleshooting
Improper belt tension Belt worn, glazed, or oil saturated Drive pulley worn
Belt worn, replace Replace belt Replace pulley and belt (See O.E.M. equipment manual) Set brake adjustment (See O.E.M. equipment manual) Linkage damaged or loose, replace or adjust (See O.E.M. equipment manual) Check and add fluid if low (Part No. 730228) Replace hydrostatic transmission Repair or replace linkage (See O.E.M. equipment manual) Replace hydrostatic transmission Replace friction pack washers, tighten nut to 100 in. lbs. loosen nut 4-turns
REDUCED POWER DIFFICULT TO SHIFT
Brake set too tight
Shifter linkage misadjusted or broken Fluid low in hydrostatic transmission Hydrostatic transmission bad Linkage broken or bent Hydrostatic transmission pump seized Hydrostatic transmission control friction pack misadjusted 22
Tecumseh LTH2000 Series Transaxle Troubleshooting - continued
Final Drive Gear Noise
Check, add gear oil to final drive Check, replace worn gears Check, replace worn bearings Replace hydrostatic transmission Mechanical disconnect not properly engaged, check for obstruction Check, replace mechanical disconnect components (If hydrostatic transmission shaft is damaged, replace transmission)
UNIT IS NOISY
Hydrostatic Transmission Noise Transaxle clicking
Improper belt tension Brake setting incorrect Belt worn, glazed, or oil saturated
Belt worn, replace (See O.E.M. equipment manual) Adjust brake to proper setting (See O.E.M. equipment manual) Replace belt (See O.E.M. equipment manual) Replace pulley and belt (See O.E.M. equipment manual) Replace hydrostatic transmission Linkage damaged or loose, replace or adjust (See O.E.M. equipment manual) Check and add fluid if low (Part No. 730228) Move control to connected position (See O.E.M. equipment manual) Replace missing or broken key Check, replace worn or damaged gear Replace hydrostatic transmission Replace hydrostatic transmission Split final drive housing, clean old sealant off, replace seals, apply new sealant (torque bolts 80-120 in. lbs.) Split final drive housing, clean old sealant off, replace seals, apply new sealant (torque bolts 80-120 in. lbs.) Adjust brake linkage (See O.E.M. equipment manual) Replace components, set brake (See O.E.M. equipment manual) Adjust brake to proper setting (See O.E.M. equipment manual) 23
DOES NOT DRIVE LEAKING BRAKE NOT WORKING LUBRICANT
Drive pulley worn Transaxle - hydrostatic transmission bad Shifter linkage misadjusted or broken Fluid low in hydrostatic transmission Disconnect is in freewheel position Sheared or missing axle key Damaged or broken final drive gear Hydrostatic transmission leaking Hydrostatic transmission leaking Final drive leaking at seam
Final drive leaking at shaft seal
Linkage out of adjustment Linkage bent or broken Brake setting incorrect
1800 / VST Troubleshooting
The information on this page has been provided to help understand the internal operation of the VST. Do not use this information to attempt any internal repairs. Tecumseh's current policy on hydrostatic transaxles that have internal failures is to replace the complete unit. This has not changed. However, Tecumseh would like to provide a failure checklist to assist in making an accurate evaluation of the complete tractor to eliminate any unnecessary replacements. Here is a list of items to check and corrective actions to take. To properly test the unit for power loss. 1. Allow the unit to cool before trying the following steps. 2. Put the shift lever in a position that is 1/2 of the travel distance from neutral to forward. 3. Place the tractor on a 17o grade. 4. Drive the tractor up the grade (without the mower deck engaged). The loss of power experienced should be approximately 20%. This is considered normal. If the loss of power is approximately 50%, this would be considered excessive. 5. Bring the unit to neutral, shift into forward and note the response. Care should be taken to move the lever slowly to avoid an abrupt wheel lift. To determine if the problem is with the hydro unit, all external problem possibilities must be eliminated. Here are some potential problem areas. 1. Overheating: Heat can cause a breakdown in the viscosity of the oil which reduces the pressure used to move the motor. Remove any grass, debris, or dirt buildup on the transaxle cover and / or between the cooling fins and fan. Buildup of material will reduce the cooling efficiency. 2. Belt slippage: A belt that is worn, stretched, or the wrong belt (too large or wide) can cause belt slippage. This condition may have the same loss of power symptom as overheating. Typically, the unit which has a slipping belt will exhibit a pulsating type motion of the mower. This can be verified visually by watching the belt and pulley relationship. If the belt is slipping, the belt will chatter or jump on the pulley. If the belt is good, a smooth rotation will be seen. Replace the belt and inspect the pulley for damage. 3. Leakage: The VST and 1800 Series have two oil reservoirs which can be checked for diagnostic purposes. The first is the pump and motor expansion bellows. With a small diameter blunt or round nose probe, check the bellows depth through the center vent hole. Proper depth from the edge of that hole is 3-1/4 - 3-1/2 inches (8.25 - 8.9 cm). The second chamber is for the output gears including the differential. FIRST make sure the tractor is level, then remove the drain/fill plug. NOTE: Some units that do not have differential disconnect will have two plugs. We recommend using only the primary plug. With a small pocket rule insert until you touch bottom of case. You can then remove it and check for 1/4 - 3/8 inches (6.5 - 9.5 mm) contact, this is full at its 8 oz. capacity. 4. Low ground speed: If the linkage is not synchronized to absolute neutral, or the shift lever is not properly fastened to the tapered control shaft, full forward travel may not be achieved. This may cause a false reading and be misdiagnosed as a low power condition. This also could be caused by the brake not releasing. To determine absolute neutral, the hole in the tapered control shaft must face straight up and down, at this point make sure the O.E.M. linkage is in neutral. To properly fasten the control lever to the shaft, torque the nut to 25-35 ft. lbs. (34 - 48.3 Nm) of torque with the shaft and the lever in neutral. When attaching the shifter arm to the shaft you must prevent any rotation during torquing. This can be done by placing a long 5/16" bolt in the hole of the shaft. Hold the bolt until the tapers are locked and the nut torque is correct. To make sure that the brake is not binding, drive the unit up a slight grade. Position the speed control lever into neutral. The unit should coast backwards. If the unit does not coast back slowly, the brake is not released from the brake disk. Adjust the brake linkage to release the brake completely when the foot pedal is released. 5. Hard to shift: Typically hard to shift symptoms are not caused by the hydrostatic unit. The shift arm should move with relative ease. Approximately 40-50 in. lbs. (4.48 - 5.6 Nm) at the transaxle for foot pedal units or 150-200 in. lbs. (16.8 -22.4 Nm) for hand operated units. This varies depending on the type of linkage. Binding may occur in the linkage connections due to rust or moisture. Lubricating these connections and checking for bent or damaged parts should resolve hard shifting.
Tecumseh and Peerless Lubrication Requirements
NOTE Use ONLY the recommended lubricant in all models as listed to insure proper operation and long life.
RIGHT ANGLE AND T-DRIVES Model No. All Models Except * *1408-P91 *1409-P91 *1410-P91 *3002 *3003 *3028 *3029 *Series 1100 VST205/705 Limited service; use Kit Part No. 799030 All Models Quantity 4 oz./118 ml Grease
TRANSAXLES Model No. 1327 MST200 VST205 and 1800's Quantity Non-Serviceable 24 oz./710 ml Oil 30 oz./887 ml Grease 36 oz./1065 ml Grease 36 oz./1065 ml Grease 26 oz./769 ml Grease 18 oz./532 ml Grease 10 oz./296 ml Grease 30 oz./887 ml Grease 30 oz./887 ml Grease 48 oz./1420 ml Oil 32 oz./946 ml Oil Model No. 700 700H 2800
TRANSMISSIONS Quantity 12 oz./355 ml Grease 12 oz./355 ml Grease HYDROSTATIC TRANSAXLES and TRANSMISSIONS 1800 Series Limited service; use Kit Part No. 799030
3 oz./89 ml Grease
6 oz./180 ml Oil 16 oz./473 ml Oil 3 oz./89 ml Grease
TWO SPEED AXLE Limited service; final drive ONLY 8 All Models 2 oz./59 ml Grease oz./240 ml Oil THREE SPEED AXLE Non-Serviceable All Models 2 oz./59 ml Grease Non-Serviceable
44 oz./1301 ml Oil
Grease: Bentonite Grease Part Number 788067B Oil: SAE E.P. 80W90 Oil Part Number 730229A Refer to O.E.M. Technicians Manual for type of lubricant. To be filled through shift lever opening. Some 1000 Right Angle and T-Drives use Bentonite Grease.
24 oz./710 ml Oil
16 oz./473 ml Oil
Tecumseh's current policy on VST and 1800 Series transaxles with internal failure, is to replace the complete unit. VST and 1800's have two separate reservoirs which can be checked for diagnostic purpose only. The output gear reservoir can be checked with a small pocket rule as outlined in the Tecumseh & Peerless Transmission and Drive Products Handbook. Refer to Tecumseh & Peerless Transmission and Drive Products Handbook, 691218.
64 oz./1892 ml Oil 32 oz./946 ml Oil
Service Number 740043 or 695244A
Service Number 740049 or 692509
ECV100-120 HMSK70, LH318SA (HMSK80), HMSK90, H22 H25 H30-80 HM70-100 HH40-120 HHM80 HMXL70 HT30 HT35 HXL35 HS40-50 HSK30-70 HSSK40, LH195SA (HSSK50), LH195SP (HSSK55) LH358SA (HMSK100), HMSK110 LAV25-50 LEV80, LV148EA (LEV90), LV195EA (LEV120) LV148SA (VSK90), VSK100 TNT100 TNT120 TVS75-120 TVXL90-120 TVM125-170 TVM195-220 TVXL195-220 V40-80 VH40-100 VM70-100 VLV-ALL
OHM120 OH318SA (OHSK110), OH358SA (OHSK120-130) OH318EA (OHM90-110) OHM120 OH195EA (OHH60), OH195EP (OHH65) OHH/OHSK40-130 OH195SA (OHSK70), OH195SP (OHSK75) OH318SA (OHSK110), OH358SA (OHSK120-130) OH180 OVM120 OVXL120, OVXL/C120 OVXL125 OV195EA OV358EA (OHV110-135) OV490EA (OHV140-180) OV691EP (VTX691, TVT691) OVM120 OVXL120 OVXL/C120 OVXL125
Service Number 691462A
Service Number 740047 or 692508
AH520 AH600 HSK840 HXL840 TC200 TCH200 Type 1500 TH098SA (HSK600), HSK635 TH139SA (HSK845, 850) TH139SP (HSK870) AV600 TV085XA (AV520) TVS600
Service Number 740045 or 691218
100 Series Differentials MST200 Series Transaxles 300 Series Transaxles 600 Series Transaxles 601 Slow Speed Transaxle 700 Series Transmissions 700H Series Transmissions 800/801 Series Transaxle 820 Series Transmission 900 Series Transaxles 910 Series Transaxles 915/940 Series Transaxles 920 Series Transaxles 930 Series Transaxles 1000/1100 Series Right Angle / T-Drives 1200 Series Transaxles 1300 Series Transaxles 2300 Series Transaxles 2400 Series Transaxles 2500 Series Transaxles 2600 Series Transaxles VST Transaxles
Service Number 694988
Service Number 694782
TCH300 TM049XA (TC300)
TECUMSEH POWER COMPANY 900 North Street Grafton, Wisconsin 53024 1-800-558-5402
Form No. 696533
Litho In U.S.A.
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