TecumsehPower Engine Operator’s Manual OVRM 120 Four-Cycle Engine • Vertical Crankshaft • Air-Cooled Table of Contents IMPORTANT NOTICE! Safety Definitions ........................................ ii General Safety Precautions ............................................................. 1 How to Get Service .......................................................................... 3 Oil and Fuel Specifications ...............................................................
IMPORTANT NOTICE! Safety Definitions Statements in this manual preceded by the following words and graphics are of special significance: ! WARNING Or ! WARNING 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.
I. General Safety Precautions ! WARNING Read equipment manufacturer’s manual and this material thoroughly before using this engine. Failure to do so can result in serious injury or death. Consult your local Authorized Tecumseh Servicing Dealer, call 1-800558-5402, or go to www.TecumsehPower.com for additional information. A. Avoid Carbon Monoxide Poisoning All engine exhaust contains carbon monoxide, a deadly gas.
E. DO NOT Modify Engine To avoid serious injury or death, DO NOT modify engine in any way. Tampering with the governor setting can lead to a runaway engine and cause it to operate at unsafe speeds. NEVER tamper with factory setting of engine governor. 1 DO NOT USE AS SHOWN ! WARNING Use of this engine on fun-carts, go-karts, or mini-bikes can result in serious injury or death. Tecumseh manufactures the Power Sport line of engines for use in such applications.
II. How to Get Service 2083 For engine adjustments, repairs or warranty service NOT covered in this manual, consult your local Authorized Tecumseh Servicing Dealer, call 1-800-558-5402, or go to www.TecumsehPower.com for additional information. Visit our web site at TECUMSEH POWER COMPANY THIS ENGINE MEETS 1995-2005 CALIF & US EPA PHI APPLICABLE EMISSION REGULATIONS FOR SI SORE ENGINES EM www.TecumsehPower.com LV195EA 361540D 4TPXS.
III. Oil and Fuel Specifications Table 1. Recommended Oil Usage A. Oil To operate engine you need to use a clean, high quality, detergent oil. For recommended engine oil, see Table 1. Tecumseh Recommended Oil Usage Straight Grade Tecumseh Part No. 730225A or SAE 30 NOTES Be sure original container is marked A.P.I. Service “SL/SJ”. Multi Grade Tecumseh Part No. 730226A or SAE 5W30 or SAE 10 Using multigrade oil above 32°F (0°C) will increase oil consumption. SAE10W40 is NOT recommended.
B. Filling Oil Sump I. 3 Oil Fill Cap With Dipstick 4 5 If your engine has a dipstick go to step 1. If your engine does NOT have a dipstick, see "II. Oil Fill Cap Without Dipstick (Oil Fill Plug)" instructions below. 1. Be sure engine is upright and level. 1 2. Unscrew oil fill cap dipstick from oil filler tube and wipe dipstick clean. See Figures 7 and 8. 3. Screw oil fill cap dipstick back into oil filler tube. Tighten securely. 4. Unscrew and remove oil fill cap dipstick from oil filler tube.
C. Filling Fuel Tank An adult should fuel this engine. NEVER allow children to refuel this engine. 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: ! WARNING Front View 1. Stop engine and allow it to cool before refueling. Bottom View 2. Be sure engine is outdoors and in a well-ventilated area. 3.
V. Starting Your Engine Table 3. Engine Sections with Electric Starters An adult should start the engine. Only allow children to start engine if an adult has determined they are experienced and capable of such operation. If your engine has: ! WARNING If you are unable to start this engine after following instructions in this manual, contact your Authorized Tecumseh Servicing Dealer.
NOTE DO NOT operate an electric starter for more than 5 seconds each attempt. 5. Push starter button or turn ignition switch key to start engine. 4 5 3 1 6. When engine starts, release starter button or ignition switch key. 7. If engine fails to start after 3 attempts repeat steps 2 thru 6 and try again. 8. If engine does NOT start after following steps 1 thru 7, contact your Authorized Tecumseh Servicing Dealer. DO NOT attempt to start or troubleshoot this engine in any other way. II. Choke Only 1.
III. Primer Bulb and Choke 2 In Temperatures above 40°F (5°C): 3 Follow instructions in Section A.I. See "I. Primer Bulb Only" instructions on page 7. See Table 3 on page 7. In Temperatures below 40°F (5°C): 1. To avoid carbon monoxide poisoning, be sure engine is outdoors in a well-ventilated area. 2. Move engine throttle control to “CHOKE” or “START” position, if present (see equipment manufacturer’s instructions). See Figures 17, 18 and 19. 3.
7. If engine fires but does NOT continue to run, move engine throttle control to “FAST” position and start engine. 8. If engine fails to start after 3 attempts in the “FAST” position, move engine throttle control to “CHOKE” position and start engine. 9. If engine does NOT start after following steps 1 thru 8, contact your Authorized Tecumseh Servicing Dealer. DO NOT attempt to start or troubleshoot this engine in any other way. Table 4.
3. When starting a cold engine, push primer bulb firmly 3 times, allowing primer bulb to return completely to original position between pushes. See Figure 24. 1 NOTES Be sure to cover vent hole when pressing primer bulb. See Figure 24. Cooler temperatures may require pushing primer bulb firmly 5 times. DO NOT use primer to restart a warm engine after a short shutdown. Doing so will flood the engine and may result in equipment malfunction. 4.
III. Primer Bulb and Choke In Temperatures above 40°F (5°C): Follow instructions in Section B.I. See "I. Primer Bulb Only" instructions on page 10. See Table 4 on page 10. 2 3 1 In Temperatures below 40°F (5°C): 1. To avoid carbon monoxide poisoning, be sure engine is outdoors in a well-ventilated area. 2. Move engine throttle control to “CHOKE” or “START” position, if present (see equipment manufacturer’s instructions). See Figures 25, 26 and 27. 3.
VI. Stopping Your Engine and Short-Term Storage Stop engine according to equipment manufacturer’s instructions. To avoid unsupervised operation of an engine, especially by children, NEVER leave it unattended when it is running. Always turn off the engine after use and remove ignition key, if provided. ! WARNING NEVER store the engine with fuel in the fuel tank inside a building with potential sources of ignition such as hot water and space heaters, clothes dryers, electric motors, etc.
I. Oil Fill Cap With Dipstick If your engine has a dipstick go to step 1. If your engine does NOT have a dipstick, see "II. Oil Fill Cap Without Dipstick (Oil Fill Plug)" instructions on page 16. 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 30 and 31. See "G. Avoid Accidental Starts" instructions on page 2. Afterward, continue reading instructions below. • Keep the disconnected spark plug wire securely away from metal parts where arcing could occur. Figure 30.
5. Place approved recyclable oil container under oil drain plug, if present. See Figure 34. 6. Remove oil drain plug, if present. 7. Tip engine to position the oil flow, so it will drain from the lowest point on the engine (see equipment manufacturer’s instructions). 8. Drain oil into an approved recyclable oil container. Figure 34. Oil Drain Plug NOTE Used oil must be disposed of at a proper collection center. 9. Install oil drain plug and tighten securely. 10. Remove oil fill cap dipstick.
II. Oil Fill Cap Without Dipstick (Oil Fill Plug) If your engine does NOT have a dipstick go to step 1. If your engine has a dipstick, see "I. Oil Fill Cap With Dipstick" instructions on page 14. 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 37 and 38. See "G. Avoid Accidental Starts" instructions on page 2. Afterward, continue reading instructions below. Figure 37.
5. Place approved recyclable oil container under oil drain plug. 6. Tip engine to position the oil drain plug at the lowest point on the engine (see equipment manufacturer’s instructions). See Figure 41. 7. Remove oil drain plug and drain oil into an approved recyclable oil container. Figure 41. Oil Drain Plug NOTE Used oil must be disposed of at a proper collection center. 8. Install oil drain plug and tighten securely. 9. Remove oil fill plug. See Figure 42. 10.
B. Removing Debris from Engine 2 Before each use, remove the air cleaner cover. Discard grass clippings, dirt and debris from the following areas: • Levers and Linkage • Cooling Fins • Air Intake Screen • Air Inlet • Guards 1 Removing debris will insure adequate cooling, correct engine speed and reduce the risk of fire. See Figure 45. 3 C. Spark Plug Check spark plug yearly or every 100 operating hours. 1. Clean area around spark plug. 1. Cooling Fins 2. Air Intake Screen 3. Levers and Linkage 2.
II. Servicing Paper Filters Paper filters cannot be cleaned and must be replaced once a year or every 100 operating hours; more often if used in extremely dusty conditions. Replacement filters are available at an Authorized Tecumseh Servicing Dealer. Follow the instructions next to the drawing of your air cleaner to remove and replace it. 4 5 6 7 3 NOTE DO NOT put oil on or clean a paper filter. 2 III. Removal and Installation-Type “A” Air Cleaner 8 1 1.
E. Carburetor VIII. Transporting Your Engine If you think your carburetor needs adjusting, see your nearest Authorized Tecumseh Servicing Dealer. Engine performance should NOT be affected at altitudes up to 7,000 feet (2,134 meters). For operation at higher elevations, contact your Authorized Tecumseh Servicing Dealer. NEVER transport this engine inside another vehicle or in any enclosed space if there is any gasoline in the tank. Fuel vapor or spilled fuel may ignite. F.
IX. Storing Your Engine III. Fuel System A. Short-Term/Seasonal Storage To avoid stale gas and carburetor problems, treat the fuel system in the following method below: I. NOTES Tecumseh recommends using ULTRA-FRESH™ or Fuel Saver Plus Gasoline Stabilizer plus Fuel System Cleaner as an acceptable method of minimizing formation of fuel gum deposits during storage. This product is available from your Authorized Tecumseh Servicing Dealer.
II. Oil Cylinder Bore When lubricating cylinder bore, fuel may spray from spark plug hole. To prevent serious injury from fuel fires, follow these instructions: ! WARNING 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 49 and 50. See “G. Avoid Accidental Starts” instructions on page 2. Afterward, continue reading instructions below. • Keep the disconnected spark plug wire securely away from metal parts where arcing could occur.
X. Preventing Forest, Brush and Grass Fires Local, state and federal laws may require use of a spark arrester to prevent fires. For example, it is a violation of California Public Resources Code (section 4442) to use or operate engine on any forest-covered, brush-covered or unimproved grass-covered land unless engine is equipped with a spark arrester. Spark arrester must be maintained in effective working order by owner and/or operator.
Before Each Use Scheduled Maintenance Every 5 Hours or Before Each Use 1. Check Oil Level 2. Clean Cooling Fins Page 24 Every 25 Hours or 3 Months Scheduled Maintenance 1.
Every 25 Hours or 3 Months Scheduled Maintenance 1. Change Oil Date_______________Owner/Dealer Date_______________Owner/Dealer 1. Replace Paper Filter 2. Replace Oil Filter 3.
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CALIFORNIA & US EPA EMISSION CONTROL WARRANTY STATEMENT The U. S. Environmental Protection Agency (“EPA”), the California Air Resources Board (“CARB”) and Tecumseh Power Company are pleased to explain the Federal and California Emission Control Systems Warranty on your new small off-road engine. In California, new 1995 and later small off-road engines must be designed, built and equipped to meet the State’s stringent anti-smog standards.
EMISSION CONTROL SYSTEM WARRANTY Emission Control System Warranty (“ECS Warranty”) for 1995 and later model year California small off-road engines (for other states, 1997 and later model year engines): A. APPLICABILITY: This warranty shall apply to 1995 and later model year California small off-road engines (for other states, 1997 and later model year engines).
XII.
