Tecumseh OH318 Operator's Manual
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Tecumseh OH318 Operator's Manual

Four-cycle engine - horizontal crankshaft - air-cooled
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Operator's Manual
OH318EA (OHM90-110)
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled

Table of Contents

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
Emission Control System Warranty .............................................. 21
XII. Warranty Information .....................................................................22
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Maintenance Tips
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Locate your nearest TecumsehPower Servicing Dealer
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www.TecumsehPower.com
181-719-14
(English) 6/01/08

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Summary of Contents for Tecumseh OH318

  • Page 1: Table Of Contents

    Operator’s Manual OH318EA (OHM90-110) Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled Table of Contents IMPORTANT NOTICE! Safety Definitions ........ii I. General Safety Precautions ............1 II. How to Get Service ................. 3 III. Oil and Fuel Specifications ............. 4 IV.

  • Page 2: Important Notice

    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.

  • Page 3: General Safety Precautions

    I. General Safety Precautions • NEVER fill fuel tank indoors. Fill fuel tank outdoors in a well-ventilated area. • DO NOT smoke while refueling tank. WARNING • Use only an approved red GASOLINE container Read equipment manufacturer’s manual and this to store and dispense fuel.
  • Page 4 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.

  • Page 5: How To Get Service

    II. How to Get Service For engine adjustments, repairs or warranty service 2083 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 TecumsehPower Company at 1-800-558-5402 for THIS ENGINE MEETS 1995-2005 CALIF &...

  • Page 6: Oil And Fuel Specifications

    III. Oil and Fuel Specifications Table 1. Recommended Oil A. Oil TecumsehPower Recommended Oil Usage Straight Grade To operate engine you need to use a clean, high quality, TecumsehPower Part No. detergent oil. For recommended engine oil, see Table 1. In 730225A or SAE 30W addition, you need to be sure the oil sump contains the Multi Grade...
  • Page 7 B. Filling Oil Sump 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.
  • Page 8 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”...

  • Page 9: Starting Your Engine

    G. Filling Fuel Tank An adult should fuel this engine. WARNING NEVER allow children to refuel this Front View 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: 1.
  • Page 10 This section contains starting instructions for several different types of engines. In order to locate the instructions that apply to your engine, first determine what type of Fuel Tank starter you have. If you have an electric starter, see “A. Engines with Electric Starters”...
  • Page 11 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 Figures 18 thru 20. c. Next, move choke control to “NO CHOKE” position. See Figures 18 thru 20. 7.
  • Page 12 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 manufac- turer’s instructions) is open and all switches are on. 3. Move engine speed control to ”FAST” position. See Figures 21 thru 23 4.
  • Page 13 When pulling starter rope, the rope WARNING can unexpectedly jerk back toward engine causing serious injury. To avoid this risk, carefully follow these instructions: 5. Grasp starter cord handle. See Figure 27. a. Pull rope out slowly until you feel drag. b.

  • Page 14: Stopping Your Engine And Short-Term Storage

    VI. Stopping Your Engine and Short-Term Storage Stop engine according to equipment manufacturer’s instructions. To avoid unsupervised operation of WARNING 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.
  • Page 15 A. Checking and Changing Oil To avoid engine damage, it is important to: • Check oil level before each use and every 5 operating hours when engine is warm. See "A. Checking Oil Level" instructions on page 4. Afterward, continue reading instructions below. •...
  • Page 16 B. Removing Debris from Engine Before each use, remove grass clippings, dirt and debris from the following areas: • Levers and Linkage • Cooling Fins • Air Intake Screen • Guards Removing debris will insure adequate cooling, correct engine speed and reduce the risk of fire. See Figure 31. C.
  • Page 17 III. Removal and Installation of OH318EA Air Filters 1. Remove wing nuts and air cleaner cover. See Figure 33. 2. Remove foam filter from paper filter. 3. Remove paper filter from base. 4. Inspect filters for discoloration or dirt accumulation. If either is present, see "I.

  • Page 18: Transporting Your Engine

    F. Alternator (Optional) VIII. Transporting Your Engine For alternator related electrical problems such as: NEVER transport this engine inside WARNING another vehicle or in any enclosed • Inoperative Starter space if there is any gasoline in the tank. Fuel vapor or •...

  • Page 19: Storing Your Engine

    IX. Storing Your Engine IV. Fuel Treatment 1. Add fuel stabilizer according to manufacturer’s A. Short-Term/Seasonal Storage instructions. Clean Engine 2. Run engine at least 10 minutes after adding stabilizer to allow it to reach carburetor. Before servicing the engine remove the carburetor cover NEVER store engine with fuel in the and/or blower housing.

  • Page 20: Preventing Forest, Brush And Grass Fires

    II. Oil Cylinder Bore When lubricating cylinder bore, fuel CAUTION 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 35 and 36. •...

  • Page 21: Maintenance Intervals

    XI. Maintenance Intervals Every 25 Hours or 3 Months 1. Clean Foam Pre-Filter Maintenance is one of the most important things that Date_______________Owner/Dealer you can do to extend the life of your TecumsehPower Date_______________Owner/Dealer engine. If you are unable to perform maintenance intervals Date_______________Owner/Dealer yourself, contact your nearest Authorized TecumsehPower Servicing Dealer.

  • Page 22: California & Us Epa Emission Control Warranty Statement

    CALIFORNIA & US EPA EMISSION CONTROL WARRANTY STATEMENT The U. S. Environmental Protection Agency (“EPA”), the (any TecumsehPower Registered Service Dealer, California Air Resources Board (“CARB”) and Tecumseh- TecumsehPower Authorized Service Distributor Power Company are pleased to explain the Federal and TecumsehPower Central Warehouse Distributor) as soon California Emission Control Systems Warranty on your as a problem exists.

  • Page 23: Emission Control System Warranty

    EMISSION CONTROL SYSTEM WARRANTY Emission Control System Warranty (“ECS Warranty”) for 1995 5. The owner shall not be charged for diagnostic labor which and later model year California small off-road engines (for other leads to the determination that a part covered by the ECS states, 1997 and later model year engines): Warranty is in fact defective, provided that such diagnostic work is performed at a TecumsehPower Authorized...

  • Page 24: Warranty Information

    XII. Warranty Information LIMITED WARRANTY FOR NEW TECUMSEHPOWER ENGINES AND ELECTRONIC IGNITION MODULES For the time period shown below from the date of purchase and subject to the exceptions and limitations described herein, TecumsehPower Company will, at its option as the exclusive remedy, either repair or replace for the original purchaser, free of charge, any part of any new TecumsehPower engine which is found, upon examination by any Authorized TecumsehPower Servicing Outlet or by TecumsehPower’s Service Division, to be DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP.

This manual is also suitable for:

Oh318eaOhm110Ohm90Ohm90-110

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