Tecumseh OH195SA/OH195SP (OHSK50-75) User Manual
Cycle engine, Engine, Parts
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Table of contents
Document Outline
- 181-1275-14
- (English) 6/01/08
- IMPORTANT NOTICE!
- I. General Safety Precautions
- II. How to Get Service
- III. Oil and Fuel Specifications
- IV. Before Starting Your Engine
- A. Checking Oil Level
- Ounces
- U.S. Pints
- Liters
- Model Number
- 21
- 1-1/4
- .62
- LH195SA/LH195SP OH195SA/OH195SP
- 26
- 1-5/8
- .77
- LH318SA/LH358SA OH318SA
- 28
- 1-3/4
- .83
- OH358SA
- Ethanol
- 10%
- Grain Alcohol (“Gasohol”)
- 10%
- MTBE (Methyl Tertiary Butyl Ether)
- 15%
- ETBE (Ethyl Tertiary Butyl Ether)
- 15%
- I. Oil Fill Cap/Dipstick
- 1. Be sure engine is upright and level.
- 2. Unscrew oil fill cap/dipstick from oil filler tube and wipe dipstick clean. See Figures 8 and 9.
- 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.
- II. Oil Fill Cap/Plug
- 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.
- Figure 8. Oil Fill Cap/Dipstick Locations
- Figure 9. Oil Fill/Drain Locations
- C. Check the Following Items
- 1. Be sure ignition switch on engine or equipment is in “ON”, “RUN” or “START” position. See Figures 10, 11 and 12.
- 2. Be sure fuel valve, if present (see equipment manufacturer’s instructions) is open. See Figure 13.
- 3. Check engine and equipment before each operation for loose nuts, bolts and attachments; keep these items tightened.
- D. Check the Item Descriptions
- 1. Control Lever
- 2. Oil Drain Plug
- 3. Choke
- 4. Ignition Key or Ignition Switch
- 5. Carburetor Cover
- 6. Muffler (with Muffler Guard, if equipped)
- 7. Oil Fill Cap/Dipstick
- 8. Spark Plug Cap
- 9. Fuel Fill Cap
- Figure 10. Ignition Key
- Figure 11. Possible Ignition Key Locations
- Figure 12. Typical Engine Symbols
- Figure 13. Fuel Valve Positions
- 2
- Figure 14. 4-Cycle Snow Engine Components
- E. 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. See Figure 14 on page 7. Afterward, continue reading instructions below.
- 4. Using an approved red GASOLINE container, add fuel 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 is spilled DO NOT start engine. Move machine away from area of spillage. Avoid creating any source of ignition until fuel vapors are gone.
- 6. Be sure fuel valve, if present (see equipment manufacturer’s instructions) is open. See Figure 16.
- F. Electrical Power
- V. Starting Your Engine
- Figure 18. Typical Engine Symbols
- A. Engines with Electric Starters
- 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. Be sure fuel valve, if present (see equipment manufacturer’s instructions) is open and all switches are on. See Figure 19.
- 3. Connect power cord to switch box on engine. See Figure 20.
- 4. Plug end of power cord into outlet.
- Figure 19. Fuel Valve Positions
- Figure 20. Electric Starter Connections
- 5. Move engine speed control to “FAST” position. See Figures 21 and 22.
- 6. Set choke control to “FULL CHOKE” position (see equipment manufacturer’s instructions). See Figure 24 on page 12. Afterward, continue reading instructions below.
- 7. Hold the primer bulb in for one full second each time you press it. See Figure 23.
- 8. Push starter button or turn ignition switch key (see equipment manufacturer’s instructions) to start engine. See "C. Check the Following Items" instructions on page 6. Afterward, continue reading instructions below.
- 9. When engine starts:
- a. Release starter button or ignition switch key. See Figure 20 on page 10. Afterward, continue reading instructions below.
- b. Momentarily move choke control to “1/2 CHOKE” position until engine runs smoothly. See Figure 24 on page 12. Afterward, continue reading instructions below.
- c. Next, move choke control to “NO CHOKE” position.
- 10. Move engine speed control to desired speed in “RUN” range. See Figures 21 and 22.
- 11. If engine fires but does not continue to run, move choke control to “NO CHOKE” position and start engine. See Figure 24 on page 12. Afterward, continue reading instructions.
- Figure 21. Typical Engine Symbols
- Figure 22. Engine Speed Control Positions
- Figure 23. Pressing Primer Bulb
- 12. If engine fails to start after 3 attempts in the “NO CHOKE” position, move choke control to “FULL CHOKE” position and start engine.
- 13. Disconnect power cord from outlet. See Figure 20 on page 10. Afterward, continue reading instructions below.
- 14. Disconnect power cord from switch box on engine. See Figure 20 on page 10. Afterward, continue reading instructions below.
- 15. If engine does not start after following steps 1 thru 12, 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 24. Choke Control Positions
- B. Engines with Recoil Starters
- 1. To avoid carbon monoxide poisoning, be sure engine is outdoors in a well-ventilated area.
- 2. Be sure fuel valve, if present (see equipment manufacturer’s instructions) is open and all switches are on. See Figure 25.
- 3. Move engine speed control to “FAST” position. See Figures 26 and 27.
- 4. Set choke control to “FULL CHOKE” position (see equipment manufacturer’s instructions). See Figure 24 on page 12. Afterward, continue reading instructions below.
- 5. Hold the primer bulb in for one full second each time you press it. See Figure 28.
- 6. Operate equipment control to release engine brake or clutch, if present (see equipment manufacturer’s instructions).
- Figure 25. Fuel Valve Positions
- Figure 26. Typical Engine Symbols
- Figure 27. Engine Speed Control Positions
- Figure 28. Pressing Primer Bulb
- 7. Grasp starter cord handle. See Figure 29.
- 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.
- 8. When engine starts:
- a. Momentarily move choke control to “1/2 CHOKE” position until engine runs smoothly. See Figure 24 on page 12. Afterward, continue reading instructions below.
- b. Next, move choke control to “NO CHOKE” position.
- c. Finally, move engine speed control to desired speed in “RUN” range. See Figures 26 and 27 on page 13. Afterward, continue reading instructions below.
- 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.
- 9. If engine fires but does not continue to run, move choke control to “NO CHOKE” position and start engine. See Figure 24 on page 12. Afterward, continue reading instructions below.
- 10. If engine fails to start after 3 attempts in the “NO CHOKE” position, move choke control to “FULL CHOKE” position and start engine.
- 11. If engine does not start after following steps 1 thru 10, contact your Authorized TecumsehPower Servicing Dealer. DO NOT attempt to start or troubleshoot this engine in any other way.
- 7. Grasp starter cord handle. See Figure 29.
- Figure 29. Recoil Starter Handle
- VI. Stopping Your Engine and Short-Term Storage
- A. Stop Engine
- 1. Move equipment control, if present (see manufacturer’s instructions), engine control lever or ignition switch to “STOP” or “OFF” position. See Figure 31.
- 2. Remove ignition key, if provided (see manufacturer’s instructions). See Figures 30 and 32.
- 3. Be sure fuel valve, if present (see equipment manufacturer’s instructions) is in “OFF” position. See Figure 34 on page 16.
- Figure 30. Ignition Key
- Figure 31. Engine Speed Control Positions
- Figure 32. Possible Ignition Key Locations
- B. After Engine is Stopped
- 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. See Figure 33.
- 3. Move engine choke back and forth several times and leave in the “FULL CHOKE” position. See Figure 24 on page 12. Afterward, continue reading instructions below.
- 4. Be sure fuel valve, if present (see equipment manufacturer’s instructions) is in “OFF” position. See Figure 34.
- 1. Engine Speed Control
- 2. “STOP” Position
- 3. “SLOW” Position
- 4. “RUN” Range
- 5. “FAST” Position
- Figure 33. Engine Speed Control Positions
- Figure 34. Fuel Valve Positions
- A. Stop Engine
- VII. Maintenance
- A. Remote Choke
- B. Changing Oil
- I. Oil Fill Cap/Dipstick
- 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 38 and 39. See “G. Avoid Accidental Starts” instructions on page 2. Afterward, continue reading instructions below.
- 2. Be sure fuel fill cap is on and tightened securely. See Figure 40. See Figure 14 on page 7. Afterward, continue reading instructions below.
- 3. Be sure you find the correct oil drain plug location, if present (see equipment manufacturer’s instructions). See Figure 41. See Figure 14 on page 7. Afterward, continue reading instructions below.
- 4. Clean area around oil drain plug.
- Figure 38. Disconnecting/Connecting Spark Plug
- Figure 39. Typical Spark Plug Connection
- Figure 40. Fuel Fill Cap
- Figure 41. Oil Fill/Drain Locations
- 5. Place approved recyclable oil container under oil drain plug, if present. See Figure 41 on page 18. Afterward, continue reading instructions below.
- 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.
- 9. Install oil drain plug and tighten securely.
- 10. Clean area around oil drain plug. See Figure 41 on page 18. Afterward, continue reading instructions below.
- 11. Remove oil fill cap/dipstick. See Figure 42.
- 12. Fill with recommended oil. See Figure 43. See "III. Oil and Fuel Specifications" instructions on page 4. See Table 1 on page 4. Afterward, continue reading instructions below.
- 13. Wipe away any spilled oil.
- 14. Install oil fill cap/dipstick. Tighten securely. See Figure 42.
- 15. Carefully disconnect spark plug wire from grounding post, if provided. See Figures 38 and 39 on page 18. See "G. Avoid Accidental Starts" instructions on page 2. Afterward, continue reading instructions below.
- 16. Connect spark plug wire to spark plug before attempting to start engine. See Figures 38 and 39 on page 18.
- Figure 42. Oil Fill Cap/Dipstick Locations
- Figure 43. Engine Oil Level
- II. Oil Fill Cap/Plug
- 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 44 and 45. See "G. Avoid Accidental Starts" instructions on page 2. Afterward, continue reading instructions below.
- 2. Be sure fuel fill cap is on and tightened securely. See Figure 46.
- 3. Be sure you find the correct oil drain plug location (see equipment manufacturer’s instructions). See Figure 47.
- 4. Clean area around oil drain plug.
- Figure 44. Disconnecting/Connecting Spark Plug
- Figure 45. Typical Spark Plug Connection
- Figure 46. Fuel Fill Cap
- Figure 47. Oil Fill/Drain Locations
- 5. Place approved recyclable oil container under oil drain plug. See Figures 47 and 48 starting on page 20. Afterward, continue reading instructions below.
- 6. Tip engine to position the oil drain plug at the lowest point on the engine (see equipment manufacturer’s instructions).
- 7. Remove oil drain plug and drain oil into an approved recyclable oil container.
- 8. Install oil drain plug and tighten securely. See Figure 48.
- 9. Remove oil fill cap/plug from oil fill hole.
- 10. Add oil to overflow point, making sure to avoid spilling and fill with recommended oil.
- 11. Wipe away any spilled oil.
- 12. Screw oil fill cap/plug back into oil fill hole. Tighten securely. See Figures 47 and 48 starting on page 20. Afterward, continue reading instructions below.
- 13. Carefully disconnect spark plug wire from grounding post, if provided.
- 14. Connect spark plug wire to spark plug before attempting to start engine.
- C. Spark Plug
- 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 51.
- 5. Install spark plug and tighten securely.
- 1. Oil Fill Cap/Plug
- 2. Oil Drain Plug
- Figure 48. Oil Fill Cap/Plug and Oil Drain Plug
- Figure 49. Disconnecting/Connecting Spark Plug
- Figure 50. Typical Spark Plug Connection
- Figure 51. Resistor Spark Plugs
- D. Carburetor
- E. Alternator (Optional)
- F. Engine Speed
- G. Removing Snow from Engine
- VIII. Transporting Your Engine
- 1. Empty fuel tank by using a commercially available suction device designed for use with gasoline.
- 2. Drain fuel into an approved red GASOLINE container, being careful to avoid spilling.
- 3. Run the engine until remaining fuel is consumed.
- 1. Oil Fill Cap/Dipstick
- 2. Fuel Fill Cap Areas
- 3. Recoil Starter/Flywheel Guard Areas
- 4. Linkage Areas
- 5. Spark Plug Connection
- Figure 52. Snow and Debris Removal Locations
- IX. Storing Your Engine
- A. Short-Term/Seasonal Storage
- I. Clean Engine
- II. Fuel Storage
- III. Fuel System
- IV. Fuel Treatment
- 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.
- 3. Begin servicing the cylinder bore. See "II. Oil Cylinder Bore" instructions on page 25.
- II. Oil Cylinder Bore
- 1. Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 53 and 54.
- 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:
- 6. Push starter button or turn ignition switch key to “START” position. Immediately release starter button or turn ignition switch key to “OFF” position. (This will distribute oil throughout the cylinder to prevent corrosion during storage.)
- 7. Remove rag covering spark plug hole.
- 8. Install spark plug.
- 9. Carefully disconnect spark plug wire from grounding post, if provided. See Figure 53.
- 10. Connect spark plug wire to spark plug before attempting to start engine. See Figure 54.
- III. Oil
- IV. Battery
- X. Preventing Forest, Brush and Grass Fires
- XI. Maintenance Intervals
- Table 4. Maintenance Intervals
- Change Oil
- Check Oil Level
- Clean Cooling Fins
- Change Oil
- Check Spark Plug
- Replace Spark Plug
- California & US EPA Emission Control Warranty Statement
- Emission Control System Warranty
- 1. Designed, built and equipped so as to conform with all applicable regulations adopted by the Air Resources Board pursuant to its authority in Chapters 1 and 2, Part 5, Division 26 of the Health and Safety Code, and
- 2. Free from defects in materials and workmanship which, at any time during the ECS Warranty Period, will cause a warranted emis...
- 1. Any warranted, emissions-related parts which are not scheduled for replacement as required maintenance in the Operator’s Manu...
- 2. Any warranted, emissions-related part which is scheduled only for regular inspection as specified in the Operator’s Manual sh...
- 3. Any warranted, emissions-related part which is scheduled for replacement as required maintenance in the Operator’s Manual, sh...
- 4. Repair or replacement of any warranted, emissions-related part under this ECS Warranty shall be performed at no charge to the owner at a TecumsehPower Authorized Service Outlet.
- 5. The owner shall not be charged for diagnostic labor which leads to the determination that a part covered by the ECS Warranty is in fact defective, provided that such diagnostic work is performed at a TecumsehPower Authorized Service Outlet.
- 6. TecumsehPower Company shall be liable for damages to other original engine components or approved modifications proximately caused by a failure under warranty of an emission-related part covered by the ECS Warranty.
- 7. Throughout the ECS Warranty Period, TecumsehPower Company shall maintain a supply of warranted emission- related parts sufficient to meet the expected demand for such emission-related parts.
- 8. Any TecumsehPower Company authorized and approved emission-related replacement part may be used in the performance of any ECS...
- 9. Unapproved add-on or modified parts may not be used to modify or repair a TecumsehPower engine. Such use voids this ECS Warra...
- a) Carburetor gaskets
- b) Intake pipe
- a) Air filter element
- a) Spark plug
- b) Ignition module
- c) Flywheel assembly
- a) Catalytic muffler (if so equipped)
- b) Muffler gasket (if so equipped)
- c) Exhaust manifold (if so equipped)
- a) Breather connection tube
- a) Fuel line(s)
- b) Fuel filter
- c) Canister (if so equipped)
- d) Fuel tank (if so equipped)
- e) Fuel fill cap (if so equipped)
- XII. Warranty Information
- For the time period shown below from the date of purchase and subject to the exceptions and limitations described herein, Tecums...