GAS ENGINE - 6.5 HP Model 94187 Assembly And Operation Instructions Due to continuing improvements, actual product may differ slightly from the product described herein. ® 3491 Mission Oaks Blvd., Camarillo, CA 93011 Visit our website at: http://www.harborfreight.com To prevent serious injury, read and understand all warnings and instructions before use. Copyright© 2006, 2007 by Harbor Freight Tools®. All rights reserved.
Contents Specifications.......................................................................................... 3 Save This Manual................................................................................................ 3 Safety Warnings and Precautions................................................. 3 Unpacking.................................................................................................. 5 Mounting...............................................................................
Specifications Power Output Displacement / Stroke Ignition Type Cooling System Idling Carburetor Adjust Valve clearance Distributor Timing Bore and Stroke Spark Plug Type Gasoline Type Gasoline Tank Capacity Drive Shaft Type Start Type Speed Oil Capacity and Type Engine Mounting Weight Overall Dimensions Recommended Applications Features 6.5 HP Gas Engine, EPA and CARB approved 196 cc; 4-stroke Electronic ignition (T.C.I.) Forced air cooling 1700 +/- 150 RPM Cold engine – Intake: 0.15 +/- 0.
3. Keep children away. Children must never be allowed in the work area. Do not let them handle machines, tools, or extension cords. 4. Store idle equipment. When not in use, tools must be stored in a dry location to inhibit rust. Always lock up tools and keep out of reach of children. 5. Dress properly. Do not wear loose clothing or jewelry as they can be caught in moving parts. Wear restrictive hair covering to contain long hair. 6. Use the right tool for the job.
17. Fire Hazard! Do not fill gas tank when the engine is running. Do not operate if gasoline has been spilled. Clean spilled gasoline before starting the engine. Do not operate near a pilot light or open flame. 18. Operate the engine in well ventilated areas only. Carbon Monoxide is produced during operation and is deadly in a closed environment. Early signs of Carbon Monoxide poisoning resemble the flu, with headaches, dizziness, or nausea.
Mounting 1. Mount the Engine using its four mounting holes at the base (hardware not supplied). Select a flat, smooth location able to withstand the weight, vibration, and the load device connected to the Engine. If installed indoors, proper exhaust ventilation tubing must be installed. If installed outdoors, a weatherproof housing is recommended. 2. Install the Engine load. The Engine load must be perfectly aligned with the Engine drive shaft to prevent undue wear on the shaft and bearings.
Pre-Operation Checks Caution: Failure to add oil to the Engine before use will damage the Engine and void the factory warranty. Engine oil is the key factor in engine performance. Do not use Engine oil with additives; Do not use two-stroke gasoline-oil. Using these will shorten Engine life. See Specifications on page 2 for recommended oil type. 1. Check that all installation mounting nuts and bolts are tight. 2. Check oil level (See illustration below, left.) If needed, add oil as specified on page 2.
Starting the Engine During this procedure, it may be helpful to refer to the photos of the Engine Controls on page 5. 1. Push the Gas Valve to the open (right) position. 2. Close the Choke by pulling it to the left. Note: If the Engine is already hot, it is not necessary to close the Choke. Throttle Setting 3. Push the Throttle Lever to the slow (right) position slightly. , then move it back 4. Turn the On/Off Switch to the On position. 5. Gently pull the Starter Pull Cord until it engages.
Engine Difficult to Start Symptom Engine difficult to start Probable Cause Fuel supply blocked: – Cylinder compression OK 1. Air vent in Gas Cap clogged. 1. Clean Gas Cap air vent 2. Gas Valve plugged up 2. Unclog Gas Valve 3. Main jet clog or misadjusted 3. Clean and/or readjust 4. Needle valve improperly closed or start hole is clogged 4. Take apart needle valve and repair, clean, and blow out 5. Floater in fuel tank is damaged or sticking Fuel system problem: 5. Repair floater 1.
Low Engine Power Symptom When pressing Throttle for higher speed, engine responds slowly; speed is decreased; or engine stops. Probable Cause Incorrect Ignition timing. Possible Remedy Re-adjust ignition advance angle. Fuel supply problem: 1. Fuel line is clogged or has air 1. Clean line. Bleed line of air. 2. Main jet not adjusted properly 2. Readjust jet. 3. Carburetor needle valve hole and main jet clogged 3. Clean needle valve hole and main jet 4. Gas valve clogged 4.
Symptom Engine stops suddenly. Probable Cause 1. Gas tank empty. Possible Remedy 1. Fill gas tank. 2. Carburetor clogged 2. Clean carburetor and check fuel line. 3. Floater is leaking. 3. Repair or replace. 4. Needle valve sticks. 4. Disassemble floater chamber and clean. 5. Spark plug dirty or damaged. 5. Replace spark plug. 6. Spark plug connector wire damaged or disconnected. 6. Check and repair spark plug wire. 7. Low oil auto-shutdown. 7. Fill with oil. 8.
Abnormal Engine Noise Symptom Noise of piston banging, or other metal-on-metal SKU 94187 Probable Cause 1. Piston, piston ring, or cylinder worn. Possible Remedy 1. Replace worn parts. 2. Tie rod, piston pin and hole worn. 2. Replace worn parts. 3. Crankshaft main bearing worn. 3. Replace main bearing. 4. Piston ring broken. 4. Replace piston ring. 5. Carbon deposits in combustion chamber. 5. Clean combustion chamber. 6. Spark plug gap too small. 6. Adjust electrode clearance.
Maintenance Before performing maintenance procedures, it may be helpful to locate the items to be serviced in the photos on page 5. Many Engine maintenance, adjustments, and repairs must be completed by a qualified, small engine mechanic.
4. Replace Spark Plug by hand for the first few turns, then tighten with the socket wrench completely. Securely tighten. A Spark Plug with a new Gasket requires 1/2 more turns to tighten than the used Gasket which requires 1/8 to 1/4 turns to tighten. Changing Oil 1. Run the Engine for five minutes to warm up the oil, then shut off the Engine. 2. Place a drain pan under the Drain Plug. 3. Remove the Dip Stick and unscrew the Drain Plug. 4. Allow all the oil to drain out into the pan.
Torque Value for Major Engine Bolts Item Cylinder Head Bolts Flywheel Bolt Crankcase Cover Bolts Connecting Rod Torque Value (ft-lb) 18 52~59 18 9 Transporting the Engine 1. Press the Gas Valve to the left (closed) position. 2. Wait until the engine is cool before lifting and moving. 3. Keep the Engine level while carrying with another person. Storing the Engine 1. Replace the Engine oil with new oil before storing as described on page 13. 2. Remove the Spark Plug as described on page 12.
Parts Lists and Assembly Diagrams Crankcase Assembly Diagram Note: When ordering parts from this list, specify: CRANKCASE ASSEMBLY and the ITEM No.
Crankcase Cover Assembly Diagram Note: When ordering parts from this list, specify: CRANKCASE COVER ASSEMBLY and the ITEM No.
Cylinder Head and Cover Assembly Diagram Note: When ordering parts from this list, specify: CYLINDER HEAD AND COVER ASSEMBLY and the ITEM No.
Crankshaft, Piston, and Connecting Rod Assembly Diagram Note: When ordering parts from this list, specify: CRANKSHAFT, PISTON, AND CONNECTING ROD ASSEMBLY and the ITEM No.
Camshaft and Rocker Valve Assembly Diagram Note: When ordering parts from this list, specify: CAMSHAFT AND ROCKER VALVE ASSEMBLY and the ITEM No.
Carburetor Assembly Diagram Note: When ordering parts from this list, specify: CARBURETOR ASSEMBLY and the ITEM No.
Fuel Tank Assembly Diagram Note: When ordering parts from this list, specify: FUEL TANK ASSEMBLY and the ITEM No.
Air Cleaner Assembly Diagram Note: When ordering parts from this list, specify: AIR CLEANER ASSEMBLY and the ITEM No.
Muffler Assembly Diagram Note: When ordering parts from this list, specify: MUFFLER ASSEMBLY and the ITEM No.
Recoil Starter Assembly Diagram Note: When ordering parts from this list, specify: RECOIL STARTER ASSEMBLY and the ITEM No. Parts List Part Q’ty Part 1 Bolt, M6x22 Description 1 11 Spring, Friction 1 2 Crankcase Side Plate Assy 1 12 Spring Lid 1 3 Bolt, M6x18 3 13 Screw, Set 1 4 Fan Hood Assy.
Regulator Control Assembly Diagram Note: When ordering parts from this list, specify: REGULATOR CONTROL ASSEMBLY and the ITEM No.
Flywheel Assembly Diagram Note: When ordering parts from this list, specify: FLYWHEEL ASSEMBLY and the ITEM No. Parts List Part SKU 94187 Description Q’ty 1 Nut, M14x1.
Ignition Coil Assembly Diagram Note: When ordering parts from this list, specify: IGNITION COIL ASSEMBLY and the ITEM No.
Wiring Diagram Warranty liMited 90 dAy wArrAnty Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of ninety days from the date of purchase.
Emission Control System Warranty California and United States Emission Control Defects Warranty Statement The California Air Resources Board (herein CARB), the United States Environmental Protection Agency (herein EPA), and Harbor Freight Tools® (herein HFT) are pleased to explain the emission control system warranty on your 1995 and later Small Off-Road Engine (herein engine). In California, the engine must be designed, built and equipped to meet the State’s stringent anti-smog standards.
Emission Control System Warranty (continued) 4. Coverage Exclusions Warranty claims shall be filed in accordance with the provisions of the HFT warranty policy explained in the box at the top of the previous page. HFT shall not be liable for any loss of use of the engine, for any alternative usage, for any damage to goods, loss of time, or inconvenience.
