Document Outline

• TH098SA/TH139SA/TH139SP (HSK600-870)
• Two-Cycle Engine . Horizontal/Vertical Crankshaft . Air-Cooled
• 181-807-14
  • (English) 6/01/08
  • IMPORTANT NOTICE!
    • Safety Definitions
• Statements in this manual preceded by the following words and graphics are of special significance:
• Or
• WARNING indicates a potentially hazardous situation which if NOT avoided, could result in death or serious injury.
• Indicates a potentially hazardous situation which, if NOT avoided, may result in minor or moderate injury.
• Indicates a potential situation which, if NOT avoided, could result in equipment or property damage.
• 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 this engine it is your responsibility to read this Operator’s Manual. Follow these basic rules for your personal safety:
  • Notice Regarding Emissions
• TecumsehPower Contact Information
  • I. 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.
• Carbon monoxide is a colorless, odorless, tasteless gas which may be present even if you DO NOT see or smell any engine exhaust....
• To prevent serious injury or death from carbon monoxide:
  • 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:
  • 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 ...
  • D. Stay Away from Rotating Parts
• NEVER operate the engine with an unguarded engine shaft or flywheel. See Figure 1 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 proper...
  • 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.
  • 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.
  • G. Avoid Accidental Starts
• To prevent accidental starting when working on equipment always:
  • H. Use Hearing Protection
• Engine noise may cause hearing damage. Always wear hearing protection when operating an engine.
  • Figure 1. DO NOT Use Without Flywheel Guard
  • Figure 2. Disconnecting/Connecting Spark Plug
  • Figure 3. Typical Spark Plug Connection
  • II. How to Get Service
    • 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 4.
• 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.
  • 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 emis...
• 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.
  • Figure 4. Engine Identification Decal
  • Figure 5. Technician’s Handbook
  • III. Oil and Fuel Specifications
    • A. Oil
• To operate your engine you need to use a clean, high quality, 2-cycle oil mixed with fuel at a ratio of 50:1. For recommended mi...
  • Table 1. Fuel Mix Chart - Mixture Ratio 50:1
  • Table 2. Fuel Mix Chart - Mixture Ratio 32:1
  • Table 3. Recommended Fuel
  • 10%
  • 10%
  • 15%
  • 15%
    • B. Fuel
• Use unleaded regular, unleaded premium or reformulated automotive fuel only. You may use gasoline containing the components identified in Table 3.
• The use of alternative fuels such as E85 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.
  • IV. Before Starting Your Engine
    • A. Mixing Fuel and Oil
• NEVER store engine with fuel in the fuel tank inside a building with potential sources of ignition such as hot water or space heaters, clothes dryers, electric motors, etc. Doing so may lead to an explosion resulting in death or serious injury.
  • 1. Be sure container is outdoors and in a well-ventilated area.
  • 2. Fill approved clean red GASOLINE container with 1/4 of recommended fuel amount. See Tables 1, 2 and 3.
  • 3. Add required amount of recommended oil to fuel. See Tables 1 and 2.
  • 4. Screw cap onto container.
  • 5. Shake container vigorously.
  • 6. Unscrew cap from container.
  • 7. Fill container with remainder of recommended fuel. See Tables 1, 2 and 3.
  • 8. Wipe away any spilled fuel or oil.
  • B. Filling Fuel Tank
    • 1. Stop engine and allow it to cool before refueling.
    • 2. Be sure engine is outdoors and in a well-ventilated area.
    • 3. Clean area around fuel fill cap and remove fuel fill cap.
    • 4. Using an approved red GASOLINE container, add fuel mixture slowly, being careful to avoid spilling. DO NOT overfill fuel tank. Leave space in the tank to allow fuel to expand without overflowing.
    • 5. Replace fuel fill cap securely and wipe up spilled fuel before starting engine. If fuel mixture is spilled DO NOT start engine. Move machine away from area of spillage. Avoid creating any source of ignition until fuel vapors are gone.
    • Figure 6. Possible Fuel Fill Cap(s)
  • C. Check the Following Items
    • 1. Be sure ignition switch on engine or equipment is in “ON”, “RUN” or “START” position, if present (see equipment manufacturer’s instructions).
    • 2. Be sure air vent on fuel fill cap, if present (see equipment manufacturer’s instructions) is free of debris. Be sure air vent screw, if present (see equipment manufacturer’s instructions) on fuel fill cap is open.
  • V. Starting Your Engine
• To avoid serious injury or death, an adult should start this engine. Only allow children to start engine if an adult has determined they are experienced and capable of such operation.
• If you are unable to start this engine after following instructions in this manual, contact your Authorized TecumsehPower Servic...
  • Figure 7. Typical Engine Symbols
• This section contains starting instructions for several different types of engines. In order to locate the instructions that app...
  • A. Engines with Electric Starters
• Some electric starters are equipped with a 120V AC Three-Wire Power Cord and Plug designed to operate on a 120V AC household current. It must be properly grounded at all times to avoid the possibility of injury or death from electrical shock.
  • a. Determine if your house wiring has a Ground Fault Interrupted (GFI) Three-Wire Grounded System; If you are not sure ask a Licensed Electrician.
  • b. If your house wiring does not have a GFI Three-Wire Grounded System, DO NOT USE THIS ELECTRIC STARTER UNDER ANY CONDITION.
  • c. If your house wiring is grounded and a GFI Three-Prong Wall Receptacle is not available at the location where your starter will be used, one must be installed by a Licensed Electrician BEFORE USING THE ELECTRIC STARTER.
  • 1. To avoid carbon monoxide poisoning, be sure engine is outdoors in a well-ventilated area.
  • 2. Connect power cord to switch box on engine. See Figure 8.
  • 3. Plug end of power cord into outlet.
  • 4. Move choke control to “FULL CHOKE” position (see equipment manufacturer’s instructions). See Figure 9 on page 7. Afterward, continue reading instructions below.
  • 5. Use equipment according to instructions listed in the table and notes below. See Table 4. See Figure 10 on page 7. Afterward, continue reading instructions below.
  • Table 4. Priming Methods
  • No priming required.
    • 1. Power Cord to Outlet
    • 2. Switch Box
    • 3. Starter Button
    • 4. Schuko Plug
    • 5. Power Cord to Switch Box on Engine
    • Figure 8. Electrical Applications
      • 6. Push starter button or turn ignition switch key (see equipment manufacturer’s instructions) to start engine.
      • 7. When engine starts:
        • a. Release starter button or ignition switch key.
        • b. Momentarily move choke control to “1/2 CHOKE” position until engine runs smoothly. See Figure 9.
        • c. Next, move choke control to “NO CHOKE” position. See Figure 9.
        • a. Momentarily move choke control back to “FULL CHOKE” position. See Figure 9.
        • b. Next, move choke control to “1/2 CHOKE” position until engine runs smoothly.
        • c. Finally, move choke control to “NO CHOKE” position.
      • 8. If engine fires but does not continue to run, move choke control to “NO CHOKE” position and start engine.
      • 9. If engine fails to start after 3 attempts in the “NO CHOKE” position, move choke control to “FULL CHOKE” position and start engine.
      • 10. Disconnect power cord from outlet.
      • 11. Disconnect power cord from switch box on engine.
      • 12. If engine does not start after following steps 1 thru 11, contact your Authorized TecumsehPower Servicing Dealer. DO NOT attempt to start or troubleshoot this engine in any other way.
      • 1. “No Choke” Position
      • 2. “1/2 Choke” Position
      • 3. “Full Choke” Position
    • Figure 9. Choke Control Positions
    • Figure 10. Primer Bulb
    • B. Engines with Recoil Starters
• If you have an electric starter, see "A. Engines with Electric Starters" instructions beginning on page 6.
  • 1. To avoid carbon monoxide poisoning, be sure engine is outdoors in a well-ventilated area.
  • 2. Move choke control to “FULL CHOKE” position (see equipment manufacturer’s instructions). See Figure 12.
  • 3. Use equipment according to instructions listed in the table and notes below. See Table 5. See Figure 10 on page 7. Afterward, continue reading instructions below.
  • Table 5. Priming Methods
  • No priming required.
    • 4. Operate equipment control to release engine brake or clutch, if present (see equipment manufacturer’s instructions).
• When pulling starter rope, the rope can unexpectedly jerk back toward engine causing serious injury. To avoid this risk, carefully follow these instructions:
  • 5. Grasp starter cord handle. See Figure 11.
    • a. Pull rope out slowly until you feel drag.
    • b. Without allowing the rope to retract, continue pulling rope with one rapid full arm stroke.
    • c. Return rope slowly to original position.
    • a. Pull as much rope out of starter as possible.
    • b. Release starter handle and let it snap back against starter to break up ice; these two steps should only be done when starter is frozen.
  • Figure 11. Starter Cord Handle
    • 1. “No Choke” Position
    • 2. “1/2 Choke” Position
    • 3. “Full Choke” Position
    • 4.
  • Figure 12. Choke Control Positions
    • 6. When engine starts:
      • a. Release starter button or ignition switch key.
      • b. Momentarily move choke control to “1/2 CHOKE” position until engine runs smoothly. See Figure 12.
      • c. Next, move choke control to “NO CHOKE” position. See Figure 12.
      • a. Momentarily move choke control back to “FULL CHOKE” position.
      • b. Next, move choke control to “1/2 CHOKE” position until engine runs smoothly.
      • c. Finally, move choke control to “NO CHOKE” position.
    • 7. If engine fires but does not continue to run, move choke control to “NO CHOKE” position and start engine.
    • 8. If engine fails to start after 3 attempts in the “NO CHOKE” position, move choke control to “FULL CHOKE” position and start engine.
    • 9. If engine does not start after following steps 1 thru 8, contact your Authorized TecumsehPower Servicing Dealer. DO NOT attempt to start or troubleshoot this engine in any other way.
  • 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. Failure to do so may lead to serious injury or death.
• NEVER store engine with fuel in the fuel tank inside a building with potential sources of ignition such as hot water or space heaters, clothes dryers, electric motors, etc. Doing so may lead to an explosion resulting in death or serious injury.
  • A. Before Stopping
    • 1. Run engine for a few minutes to help dry off any moisture on engine.
    • 2. To help avoid possible freeze-up of starter proceed as follows:
    • I. Recoil Starters
• With engine running, pull starter rope with a rapid continuous full arm stroke 3 or 4 times. See Figure 13.
  • II. Electric Starters
    • 1. Connect power cord to switch box on engine.
    • 2. Plug end of power cord into outlet.
    • 3. With engine running, push starter button and spin starter for several seconds.
    • 4. Disconnect power cord from outlet.
    • 5. Disconnect switch box on engine.
    • Figure 13. Starter Cord Handle
      • 1. Power Cord to Outlet
      • 2. Switch Box
      • 3. Starter Button
      • 4. Schuko Plug
      • 5. Power Cord to Switch Box on Engine
    • Figure 14. Electrical Applications
  • B. Stop Engine
    • 1. Move equipment control, if present (see manufacturer’s instructions) engine control lever or ignition switch to “STOP” or “OFF” position.
    • 2. Remove ignition key, if provided (see manufacturer’s instructions).
• NEVER store engine with fuel in the fuel tank inside a building with potential sources of ignition such as hot water or space heaters, clothes dryers, electric motors, etc. Doing so may lead to an explosion resulting in death or serious injury.
  • C. After Engine is Stopped
• To prevent possible freeze-up of engine controls, follow instructions with engine stopped, listed below.
  • 1. Wipe all snow and moisture from engine control lever and choke areas.
  • 2. Move equipment control, if present (see manufacturer’s instructions) engine control lever or ignition switch back and forth several times and leave control in “STOP” or “OFF” position.
  • 3. Move engine choke back and forth several times and leave in the “Full CHOKE” position. See Figure 15.
  • 1. “No Choke” Position
  • 2. “1/2 Choke” Position
  • 3. “Full Choke” Position
  • 4.
  • Figure 15. Choke Control Positions
  • VII. Maintenance
• To avoid serious injury or death, an adult should perform maintenance on this engine. Only allow children to perform maintenance if an adult has determined they are experienced and capable of such operation.
• To prevent accidental starting when working on equipment, always:
  • A. Remote Choke
• See equipment manufacturer’s instructions and contact an Authorized TecumsehPower Servicing Dealer.
  • B. Carburetor
• If you think your carburetor needs adjusting, see your nearest Authorized TecumsehPower Servicing Dealer. Engine performance sho...
  • C. Engine Speed
• 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.
• Running the engine faster than the speed set at the factory can be dangerous and will VOID THE ENGINE WARRANTY.
  • Figure 16. Disconnecting/Connecting Spark Plug
  • Figure 17. Typical Spark Plug Connection
    • 1. Power Cord to Outlet
    • 2. Switch Box
    • 3. Starter Button
    • 4. Schuko Plug
    • 5. Power Cord to Switch Box on Engine
  • Figure 18. Electrical Applications
  • D. Adjustments
• Do not make any engine adjustments. Factory settings are satisfactory for most conditions. If adjustments are needed, contact your Authorized TecumsehPower Servicing Dealer.
  • E. Muffler and Cylinder Exhaust Ports
• The muffler and cylinder exhaust ports require cleaning after every 75 to 100 hours of operation.
  • F. Spark Plug
• Check spark plug yearly or every 100 operating hours.
  • 1. Clean area around spark plug.
  • 2. Remove and inspect spark plug.
  • 3. Replace spark plug if porcelain is cracked or if electrodes are:
  • 4. Check electrode gap with wire feeler gauge and set gap to-.030 in. (0.76 mm) if necessary. See Figure 19.
  • 5. Install spark plug and tighten securely.
  • G. Removing Snow from Engine
• After each use remove snow from the following areas:
  • 1. .030 in. (0.76 mm) Gap
  • 2. Electrodes
  • 3. Porcelain
  • Figure 19. Resistor Spark Plug
  • Figure 20. Recoil Starter Debris Areas
  • VIII. Transporting Your Engine
• 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 leading to serious injury or death.
• If there is fuel in the fuel tank, close the fuel shut-off valve, if equipped, and transport the engine upright in an open vehicle, such as an open trailer or open bed of a pickup truck.
• If you DO NOT have an open vehicle and have to transport the engine upright in a closed vehicle, follow these steps for emptying the fuel tank before transporting:
  • 1. Empty fuel tank by using a commercially available suction device designed for use with gasoline.
• To avoid serious injury or death, DO NOT pour fuel from engine or siphon fuel by mouth.
  • 2. Drain fuel into an approved red GASOLINE container, being careful to avoid spilling.
  • 3. Run the engine until remaining fuel is consumed.
• NEVER leave the engine unattended when it is running and NEVER run engine in enclosed areas to avoid death or serious injury.
  • IX. Storing Your Engine
    • A. Short-Term/Seasonal Storage
      • I. Clean Engine
• Before servicing the engine remove the carburetor cover and/or blower housing. Remove dirt and debris from the following areas:
• Removing debris will insure adequate cooling, correct engine speed and reduce the risk of fire.
  • II. Fuel Storage
• NEVER store engine with fuel in the fuel tank inside a building with potential sources of ignition such as hot water or space heaters, clothes dryers, electric motors, etc. Doing so may lead to an explosion resulting in death or serious injury.
  • III. Fuel System
• To avoid stale gas and carburetor problems, treat the fuel system in the following method below:
• It is not necessary to drain stabilized gas from carburetor.
  • IV. Fuel Treatment
    • 1. Add fuel stabilizer according to manufacturer’s instructions.
    • 2. Run engine at least 10 minutes after adding stabilizer to allow it to reach carburetor.
• NEVER store engine with fuel in the fuel tank inside a building with potential sources of ignition such as hot water or space heaters, clothes dryers, electric motors, etc. Doing so may lead to an explosion resulting in death or serious injury.
  • B. Extended Storage
    • I. Draining Fuel
      • 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 to avoid death or serious injury.
  • 3. Begin servicing the cylinder bore. See "II. Oil Cylinder Bore" instructions on page 15.
  • 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:
  • 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 21 and 22.
  • 2. Remove spark plug.
  • 3. Squirt 1oz. (30 ml) of clean engine oil into spark plug hole.
  • 4. Cover spark plug hole with rag to prevent fuel from spraying from spark plug hole when starter rope is pulled.
  • 5. Grasp starter cord handle:
    • a. Pull starter cord handle out slowly using a full arm stroke.
    • b. Repeat once. (This will distribute oil throughout the cylinder to prevent corrosion during storage.)
    • c. Proceed to Step 8.
  • 6. Push starter button or turn ignition switch key to “START” position (see equipment manufacturer’s instructions) to cycle the engine for one to two seconds.
  • 7. Turn ignition switch key to “OFF” position. Repeat Steps 6 and 7. (This will distribute oil throughout the cylinder to prevent corrosion during storage.)
  • 8. Remove rag covering spark plug hole.
  • 9. Install spark plug.
  • 10. Carefully disconnect spark plug wire from grounding post, if provided.
  • 11. Connect spark plug wire to spark plug before attempting to start engine.
  • III. Battery
• See equipment manufacturer’s instructions for proper battery storage if machine is equipped with a battery.
  • Figure 21. Disconnecting/Connecting Spark Plug
  • Figure 22. Typical Spark Plug Connection
  • 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...
• To determine if your engine has a spark arrester, locate the muffler on your engine. For example, the muffler discharge will have a spark arrester cover that reads “Screen Type 36085”.
• If your engine does NOT have a spark arrester, you may purchase one from your Authorized TecumsehPower Servicing Dealer. In some cases the muffler may need to be replaced to allow the spark arrester to be installed.
  • XI. Maintenance Intervals
• ALWAYS promptly follow maintenance intervals listed in this manual. See Table 6.
  • Table 6. Maintenance Intervals
• Scheduled Maintenance
• Every 5 Hours or Before Each Use
  • 1. Clean Cooling Fins
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• Every 100 Hours or Seasonally
  • 1. Replace Spark Plug
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• Every 75-100 Hours or Seasonally
  • 1. Clean Muffler & Cylinder Exhaust Ports
• NOTES
• NOTES
  • XII. Warranty Information
  • 181-807-14 (English) 6/01/08