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Operator’s Manual
OH318EA (OHM90-110)
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled
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Table of Contents |
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IMPORTANT NOTICE! Safety Definitions ...................................... |
ii |
I. |
General Safety Precautions ............................................................ |
1 |
II. |
How to Get Service ......................................................................... |
3 |
III. |
Oil and Fuel Specifications ............................................................. |
4 |
IV. |
Before Starting Your Engine ............................................................ |
4 |
V. |
Starting Your Engine ....................................................................... |
7 |
VI. |
Stopping Your Engine and Short-Term Storage ............................ |
12 |
VII. |
Maintenance ................................................................................. |
12 |
VIII. |
Transporting Your Engine ............................................................. |
16 |
IX. |
Storing Your Engine ...................................................................... |
17 |
X. |
Preventing Forest, Brush and Grass Fires ................................... |
18 |
XI. |
Maintenance Intervals.................................................................... |
19 |
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California & US EPA Emission Control Warranty Statement ........ |
20 |
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Emission Control System Warranty .............................................. |
21 |
XII. |
Warranty Information ..................................................................... |
22 |
Visit our web site at www.TecumsehPower.com
Register Your TecumsehPower Engine |
LOG |
ON! |
Maintenance Tips |
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On-Line Store |
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Locate your nearest TecumsehPower Servicing Dealer
181-719-14 (English) 6/01/08
IMPORTANT NOTICE!
Safety Definitions
Statements in this manual preceded by the following words and graphics are of special significance:
! WARNING
Or
WARNING
Before operating this engine it is your responsibility to read this Operator’s 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
WARNING indicates a potentially hazardous situation which if NOT avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if NOT avoided, may result in minor or moderate injury.
CAUTION
Indicates a potential situation which, if NOT avoided, could result in equipment or property damage.
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.
NOTE
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).
TecumsehPower Contact Information
For engine adjustments, repairs or warranty service NOT covered in this manual, contact your nearest Authorized TecumsehPower Servicing Dealer. Find them on our website at www.TecumsehPower.com or call TecumsehPower Company at 1-800-558-5402 for additional information.
The trademarks TECUMSEH® and the DESIGN (Native American Head logo) are registered trademarks of Tecumseh Products Company and are used by TecumsehPower Company under license from Tecumseh Products Company. TecumsehPower Company is no longer owned by Tecumseh Products Company nor is it associated or affiliated in any way with Tecumseh Products Company.
©Copyright 2006, 2008 TecumsehPower Company All Rights Reserved
Page ii |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
181-719-14 |
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 TecumsehPower Servicing Dealer, call 1-800-558-5402, or go to www.TecumsehPower.com for additional information.
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.
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.
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 fill cap or add fuel when engine is running.
•NEVER start or operate the engine with the 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.
•Use only an approved red GASOLINE container to store and dispense fuel. TecumsehPower Company 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. To empty the fuel tank, see "I. Draining Fuel" instructions on page 17.
C.Adult Supervision of Operation, Refueling and Maintenance
The manufacturer of the equipment may provide information about who is allowed to use this engine (see equipment manufacturer’s manual). NOT everyone who is allowed to use this engine is capable of safely and responsibly operating, maintaining and/or fueling it. TecumsehPower Company recommends the following:
•An adult should fuel this engine. NEVER allow children to refuel this engine. See "G. Filling Fuel Tank" instructions on page 7.
•An adult should perform maintenance on this engine. See "VII. Maintenance" instructions on page 12. 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. See "G. Avoid Accidental Starts" instructions on page 2. 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. Remove ignition key, if equipped.
D.Stay Away from Rotating Parts
NEVER operate the engine with an unguarded engine shaft or flywheel. See Figures 1 and 2 on page 2.
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. See Figures 1 and 2 on page 2.
181-719-14 |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
Page 1 |
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.
! WARNING
Use of this engine on fun-carts, go-karts, or mini-bikes can result in serious injury or death. TecumsehPower Company manufactures the Power Sport line of engines for use in such applications. Consult your local Authorized TecumsehPower Servicing Dealer, call 1-800-558-5402, or visit www.TecumsehPower.com for additional information.
F.Avoid Burns and Fire from Hot Surfaces
The muffler and other engine parts become extremely hot during operation and remain hot after the engine has stopped.
•To avoid severe burns on contact, STAY AWAY from hot areas of engine. DO NOT operate the engine without the muffler guard in place, if equipped.
•To reduce the risk of fire keep all materials that can burn, including grass and leaves, away from muffler and rest of engine. DO NOT operate, idle or park engine powered equipment in long dry grass or other dry ground cover.
G.Avoid Accidental Starts
To prevent accidental starting when working on equipment always:
•Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 3 and 4.
•Keep the disconnected spark plug wire securely away from metal parts where arcing could occur.
•Carefully attach the spark plug wire to the grounding post, if provided.
•Disconnect battery at negative terminal first, if engine is equipped with a DC electric starter.
•Turn all engine switches to “OFF” position.
•Remove ignition key, if provided.
H.Use Hearing Protection
Engine noise may cause hearing damage. Always wear hearing protection when operating an engine.
Figure 1. DO NOT Use Without Engine Shaft Guard
!
1 |
2 |
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1.Muffler Guard
2.Flywheel Guard
Figure 2. Typical Engine Guard Locations
Figure 3. Disconnecting/Connecting Spark Plug
Figure 4. Typical Spark Plug Connection
Page 2 |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
181-719-14 |
II. How to Get Service
For engine adjustments, repairs or warranty service NOT covered in this manual, contact your nearest Authorized TecumsehPower Servicing Dealer. Find them on our website at www.TecumsehPower.com or call TecumsehPower Company at 1-800-558-5402 for additional information.
Visit our web site at www.TecumsehPower.com
Register Your TecumsehPower Engine |
LOG |
ON! |
Maintenance Tips |
||
On-Line Store |
|
|
Locate your nearest TecumsehPower Servicing Dealer
A. Engine Identification Decal
A sample engine identification decal is located in the next column and indicates the engine’s model number, specification and date of manufacture (DOM). See Figure 5.
NOTES Please look at the decal on your engine.
Fill in the engine information in the spaces provided for future reference.
The engine identification decal also includes engine life specifications for the emissions-related useful life period of your engine. This period relates to the emission compliance life as certified by EPA and/or CARB.
•OH models are designated as “C” 250 hours, “B” 500 hours and “A” 1000 hours.
B.Technician’s Handbook
If you have a general understanding of internal combustion engines and wish to repair and service your engine and/or engine emission control systems yourself, a Technician’s Handbook is available from your Authorized TecumsehPower Servicing Dealer. See Figure 6. This handbook covers repairs and adjustments not covered within this Operator’s Manual, and it is intended for individuals who have had adequate training, experience and who practice proper tool usage. Service procedures should be clearly understood and practiced when servicing TecumsehPower engines.
• Order as part #695244A or #740043 for OH models.
TecumsehPower Company manufactures and is responsible only for the engine used on this power equipment. If repair or service is needed for anything other than the engine, contact the service source recommended by the equipment manufacturer.
2083
ENGINE
MODEL:
SPEC:
DOM:
Figure 5. Engine Identification Decal
Figure 6. Technician’s Handbook
181-719-14 |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
Page 3 |
III. Oil and Fuel Specifications
A. Oil
To operate engine you need to use a clean, high quality, detergent oil. For recommended engine oil, see Table 1. In addition, you need to be sure the oil sump contains the correct amount of oil to operate properly.
NOTES
The oil sump capacity for OH318EA models is 26 ounces or 1-5/8 U.S. Pints (.78 liters).
Be sure original container is marked A.P.I. Service “SL/SJ”.
Using multigrade oil above 32°F (0°C) will increase oil consumption. SAE 10W40 is NOT recommended.
Special-formulated oils are available at your Authorized TecumsehPower Servicing Dealer.
B. Fuel
Use unleaded regular, unleaded premium or reformulated automotive fuel only. You may use gasoline containing the components identified in Table 2.
•DO NOT use leaded fuel.
•Fuel must be fresh and clean. NEVER use fuel left over from last season or stored for long periods.
•NEVER mix oil with fuel.
•DO NOT use fuel containing Methanol (Wood Alcohol).
The use of alternative fuels such as E85 CAUTION or E20 are NOT recommended for use in
TecumsehPower engines. Alternative fuels with high alcohol content can cause hard starting, poor engine performance, and may cause internal engine damage.
NOTE
Damage and/or performance problems that occur from use of fuels, other than those listed in the Operator’s Manuals will not be considered warranty.
IV. Before Starting Your Engine
A. Checking Oil Level
To avoid engine damage, it is important to:
•Check oil level before each use and every 5 operating hours when engine is warm. Check oil level more frequently during engine break-in.
•Keep oil level between “FULL” and “ADD” marks on dipstick. See Figure 7.
•Be sure oil fill cap is tightened securely.
NOTES
DO NOT overfill oil filler. Doing so may result in oil carry-over to the air cleaner and equipment and cause malfunction or damage.
DO NOT allow oil level to fall below the “ADD” mark on dipstick. Doing so may result in equipment malfunction or damage.
Contact your Authorized TecumsehPower Servicing Dealer for TecumsehPower Oil.
Table 1. Recommended Oil
TecumsehPower Recommended Oil Usage
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Straight Grade |
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TecumsehPower Part No. |
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730225A or SAE 30W |
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Multi Grade |
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TecumsehPower Part No. |
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730226A or SAE 5W30 or SAE 10W |
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TecumsehPower |
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Synthetic Part No. |
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730263 or SAE 0W30 |
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-20OF |
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20OF |
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32OF |
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60OF |
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80OF |
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0OF |
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40OF |
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100OF |
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-30OC |
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-20OC |
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-10OC |
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10OC |
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20OC |
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30OC |
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40OC |
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0OC |
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Table 2. Recommended Fuel
Fuel Component |
Percentage |
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Ethanol |
10% |
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Grain Alcohol (“Gasohol”) |
10% |
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MTBE (Methyl Tertiary Butyl Ether) |
15% |
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ETBE (Ethyl Tertiary Butyl Ether) |
15% |
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Fill Between “FULL” |
FULL |
and “ADD” Marks |
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OK
ADD
Figure 7. Engine Oil Level
Page 4 |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
181-719-14 |
B. Filling Oil Sump
I.Oil Fill Cap/Dipstick
If your engine has an oil fill cap/dipstick go to step 1. If your engine does NOT have an oil fill cap/dipstick, see "II. Oil Fill Cap/Plug" instructions below.
1.Be sure engine is upright and level.
2.Unscrew oil fill cap/dipstick from oil filler tube and wipe dipstick clean. See Figure 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. Note oil level. If oil reading on dipstick is below “ADD” mark, slowly add oil to reach “FULL” level.
See Figure 7 on page 4. Afterward, continue reading instructions below.
5.Screw oil fill cap/dipstick back into oil filler tube. Tighten securely.
6.Wipe away any spilled oil.
NOTE
To change oil for engines with an oil fill cap/dipstick, see "A. Checking and Changing Oil” instructions on page 13.
II. Oil Fill Cap/Plug
If your engine does NOT have an oil fill cap/dipstick, go to step 1. If your engine has an oil fill cap/dipstick, see
"I. Oil Fill Cap/Dipstick" instructions above.
1.Be sure engine is upright and level.
2.Clean area around oil fill cap/plug. See Figure 9.
3.Unscrew oil fill cap/plug.
4.Add oil to overflow point, making sure to avoid spilling.
5.Screw oil fill cap/plug back into oil fill hole. Tighten securely.
6.Wipe away any spilled oil.
NOTE
To change oil for engines with an oil fill cap/plug, see “A. Checking and Changing Oil” instructions on page 13.
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4 |
5 |
6 |
7 |
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3 |
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2 |
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1 |
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8 |
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1. |
Carburetor |
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2. |
Air Cleaner |
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3. |
Muffler |
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4. |
Muffler Guard |
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5. |
Oil Fill Cap |
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6. |
Spark Plug Cap |
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7. |
Fuel Fill Cap |
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8. |
Starter Cord Handle |
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Figure 8. Engine Components
Figure 9. Oil Fill Locations
181-719-14 |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
Page 5 |
C. Engine Stop Switch
Some engines are equipped with an optional Stop Switch. This rocker switch is used to shut off the ignition that supplies the spark plug with power. Pressing the "OFF" position will turn the engine off when it is running. This switch must be in the “ON” position or the engine will not start. See Figure 10.
D. Low Oil Shutdown Switch
Some engines are equipped with an optional Low Oil Shutdown Switch. This is a lighted rocker switch that is connected to a float switch in the engine crankcase. When oil level drops below a predetermined level, the float switch cuts off current to the spark plug and the engine stops running. Oil must be added to the engine to bring the oil to the proper level before the engine will start. If an attempt is made to start the engine before oil is added, the switch will flash as the engine rotates, and the engine will not start. See Figure 11.
Pressing the “OFF” position of the Shutdown Switch while the engine is running, will turn the engine off. The engine will not start with the switch in the “OFF” position.
E. Low Oil Shutdown Light
Some engines are equipped with an optional Low Oil Shutdown System that includes a light but does not include a rocker switch. The float switch in this system will shut the engine off while it is running if the oil level in the crankcase falls below a predetermined level. Oil must be added to the engine to bring the oil to the proper level before the engine will start. If an attempt is made to start the engine before oil is added, the light will flash as the engine rotates, and the engine will not start. See Figure 11.
F.Low Oil Shutdown System
Some engines are equipped with an optional Low Oil Shutdown System that does not have a rocker switch or a light. The float switch in this system will shut the engine off while it is running if the oil level in the crankcase falls below a predetermined level. Oil must be added to the engine to bring the oil to the proper level before the engine will start.
1
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d |
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Climate |
Guar |
2 |
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CHOKE |
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RUN
1.“ON” Position
2.“OFF” Position
Figure 10. Engine Stop Switch
1
Climate |
Guard |
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2
3
1.“ON” Position
2.“OFF” Position
3.Lighted Switch
Figure 11. Low Oil Shutdown Switch
Page 6 |
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled |
181-719-14 |
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