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212, 346
and
Horizontal Engines
68120/68121 212cc Horizontal Engine
68136 346cc Horizontal Engine
68306 420cc Horizontal Engine
Using an engine indoors CAN KILL YOU
IN MINUTES.
Engine exhaust contains carbon monoxide.
This is a poison you cannot see or smell.
NEVER use inside
a home or garage,
EVEN IF doors and
windows are open.
When unpacking, make sure that the product is intact and undamaged.
If any parts are missing or broken, please call 1-800-520-0882 as soon as possible.
Record Product's Serial Number Here:
(See Serial Number Location on page 6.)
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available individually
as replacement parts.
©
Copyright
2010 by Harbor Freight Tools
or form without the express written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included.
Manual Revised 11f
420 cc
Only use OUTSIDE
and far away from
windows, doors,
and vents.
Visit our website at: http://www.harborfreight.com
Email our engine tech support at: predator@harborfreight.com
®
. All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape
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Table of Contents
Related Manuals for Predator Engines 212
Summary of Contents for Predator Engines 212
- Page 1 Note: If product has no serial number, record month and year of purchase instead. Note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. Visit our website at: http://www.harborfreight.com Email our engine tech support at: predator@harborfreight.com © ® Copyright 2010 by Harbor Freight Tools .
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Page 2: Specifications
Specifications Description 68120, 68121 68136 68306 Displacement 212cc 346cc 420cc Engine Type Horizontal Single Cylinder 4 stroke OHV Cooling System Forced air cooled Type 87+ octane unleaded gasoline Fuel Capacity 1 Gallon 1 Gallon 1 Gallon 10W-30 above 32° F Type SAE 5W30 at 32°... -
Page 3: Symbol Definitions
Save This Manual Symbol Definitions Keep this manual for the safety warnings and precautions, Symbol Property or Statement assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial Revolutions Per Minute number in the back of the manual near the assembly diagram (or month and year of purchase if product Horsepower has no number). -
Page 4: Setup Precautions
Set up Precautions 6. Never store fuel or other flammable materials near the engine. 1. Gasoline fuel and fumes are flammable, and 7. Only use a suitable means of transport and potentially explosive. Use proper fuel storage lifting devices with sufficient weight bearing and handling procedures. -
Page 5: Service Precautions
23. Use the equipment, accessories, etc., in accordance 4. Wear ANSI-approved safety goggles, heavy-duty work with these instructions and in the manner intended for gloves, and dust mask/respirator during service. the particular type of equipment, taking into account 5. Maintain labels and nameplates on the the working conditions and the work to be performed. -
Page 6: Engine Controls
Engine Controls Fuel Cap Air Filter Engine Switch (Electric Start Models) Starter Handle Muffler Oil Drain Plug Dipstick Throttle Starter Choke Serial Fuel Valve Number Location (Write on front cover of manual.) Engine Switch (Manual Start Models) Page 6 For Engine technical questions, please call 1-800-520-0882. Horizontal Engines... -
Page 7: Battery Setup
Battery Setup Instructions Set Up 1. Place a fully charged, lead-acid 12 V, 36+ Ah battery (not included) in a stable, flat location near the engine. Model 68120: The emission control system for this 2. Only use cables sized to match their length engine is warranted for standards set by the U.S. -
Page 8: Pre-Start Checks
Checking and Filling Fuel Operation WARNING! TO PREVENT SERIOUS INJURY FROM FIRE: Read the ENTIRE IMPORTANT SAFETY Fill the fuel tank in a well-ventilated area away INFORMATION section at the beginning from ignition sources. If the engine is hot from of this manual including all text use, shut the engine off and wait for it to cool under subheadings therein before... -
Page 9: Manual Start
Manual Start 1. To start a cold engine, move the Choke to the CHOKE position. To restart a warm engine, leave the Choke in the RUN position. CHOKE 2. Open the Fuel Valve. 3. Slide the Throttle or Speed Control Lever to 1/3 away from the SLOW position (the “turtle”). -
Page 10: Stopping The Engine
6. Allow the Engine to run for several seconds. Then, if the Choke lever is in the CHOKE position, move the Choke Lever very slowly to its RUN position. NOTE: Moving the Choke Lever too fast could stall the engine. CHOKE IMPORTANT: Allow the engine to run at no load for five minutes with no load after each start-up so that the engine can stabilize. - Page 11 Electric Start (if equipped) 1. To start a cold engine, move the Choke to the CHOKE position. To restart a warm engine, leave the Choke in the RUN position. CHOKE 2. Open the Fuel Valve. 3. Slide the Throttle or Speed Control Lever to 1/3 away from the SLOW position (the “turtle”).
- Page 12 5. Allow the Engine to run for several seconds. Then, if the Choke lever is in the CHOKE position, move the Choke Lever very slowly to its RUN position. NOTE: Moving the Choke Lever too fast could stall the engine. CHOKE IMPORTANT: Allow the engine to run at no load for five minutes with no load after each start-up so that the engine can stabilize.
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Page 13: Cleaning, Maintenance, And Lubrication Schedule
Service WARNING TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING: Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect the spark plug cap before performing any inspection, maintenance, or cleaning procedures. TO PREVENT SERIOUS INJURY FROM EQUIPMENT FAILURE: Do not use damaged equipment. -
Page 14: Checking And Filling Fuel
Checking and Filling Fuel WARNING! TO PREVENT SERIOUS INJURY FROM FIRE: Fill the fuel tank in a well-ventilated area away Full level Full level from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before adding fuel. - Page 15 Spark Plug Maintenance 2. FUEL: WARNING! TO PREVENT SERIOUS INJURY FROM FIRE: Spark Drain the fuel tank in a well-ventilated area Plug away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before draining fuel.
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Page 16: Troubleshooting
Troubleshooting Problem Possible Causes Probable Solutions Engine will not start FUEL RELATED: FUEL RELATED: 1. No fuel in tank or fuel valve closed. 1. Fill fuel tank and open fuel valve. 2. Choke not in CHOKE position, cold engine. 2. Move Choke to CHOKE position. 3. -
Page 17: Probable Solutions
Problem Possible Causes Probable Solutions Engine misfires 1. Spark plug cap loose. 1. Check wire connections. 2. Incorrect spark plug gap or 2. Re-gap or replace spark plug. damaged spark plug. 3. Defective spark plug cap. 3. Replace spark plug cap. 4. -
Page 18: Limited 90-Day Warranty
Emission Control System Warranties Warranty Limited 90 Day Warranty United States Emission Control Defects Warranty Statement (for Model 68120) Harbor Freight Tools Co. makes every effort to assure that The United States Environmental Protection Agency (herein EPA) its products meet high quality and durability standards, and Harbor Freight Tools (herein HFT) are pleased to explain the emission and warrants to the original purchaser that this product control system warranty on your 1997 and later Small Off-Road Engine... - Page 19 Harbor Freight Tools Emission Control Defects Coverage Exclusions Warranty Coverage 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 Engines are warranted for a period of two (2) years relative to page.
- Page 20 68120 212cc Parts List and Diagram Part Description Qty. Part Description Qty. Gasket, Cylinder Head Rocker, Valve Cover Asm., Cylinder Head Nut_ Valve Adjusting Gasket, Cylinder Head Cover Nut, Valve Lock Tube, Breather Spring, Valve Bolt Starter Asm., Recoil Stud Bolt Stud Shroud...
- Page 21 68120 212cc Parts List and Diagram For Engine technical questions, please call 1-800-520-0882. Page 21 Horizontal Engines...
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Page 22: Parts Lists And Diagrams
68121 212cc Parts List and Diagram Part Description Qty. Part Description Qty. Gasket, Cylinder Head Starter Asm., Recoil Cover Asm., Cylinder Head Bolt Gasket, Cylinder Head Cover Shroud Tube, Breather Shroud, Cylinder Body Bolt Shield,Lower Stud Protector, Oil Stud Switch Asm., Stop Engine Stud Bolt Bolt... - Page 23 68121 212cc Parts List and Diagram For Engine technical questions, please call 1-800-520-0882. Page 23 Horizontal Engines...
- Page 24 68136 346cc Parts List and Diagram Part Description Qty. Part Description Qty. Gasket, Cylinder Head Plate Asm., Lifter Stopper Cover Asm., Cylinder Head Bolt, Valve Adjusting Gasket, Cylinder Head Cover Rocker, Valve Tube, Breather Nut, Valve Adjusting Bolt Asm., Cylinder Head Cover Nut, Valve Lock Stud Spring, Valve...
- Page 25 68136 346cc Parts List and Diagram For Engine technical questions, please call 1-800-520-0882. Page 25 Horizontal Engines...
- Page 26 68306 420cc Parts List and Diagram Part Description Qty. Part Description Qty. Gasket, Cylinder Head Spring, Valve Cover Asm., Cylinder Head Retainer, Valve Spring Gasket, Cylinder Head Cover Starter Asm., Recoil Tube, Breather Bolt Bolt Asm., Cylinder Head Cover Shroud Stud Shroud, Cylinder Body Stud...
- Page 27 68306 420cc Parts List and Diagram For Engine technical questions, please call 1-800-520-0882. Page 27 Horizontal Engines...
- Page 28 Mounting Hole Diagrams Note: Not to scale. ITEM 68120 / 68121 212cc 6.38 in. / 162mm 2.6 in. / 66mm ITEM 68136 346cc and ITEM 68306 420cc 7.72 in. / 196mm 4.13 in. / 105mm Page 28 For Engine technical questions, please call 1-800-520-0882. Horizontal Engines...
- Page 29 Power Take-Off Diagrams Note: Not to scale. ITEM 68120 / 68121 212cc 2.43 in. / 61.7mm 5/16-24UNF 1.79 in. / 45.5mm 0.67 in. / 17mm 0.1875 in. / 4.78mm Ø0.75 in. / 19.05mm Ø3.625 in. / 92mm 4x5/16-24UNF ITEM 68136 346cc and ITEM 68306 420cc Ø3.625 in.
- Page 30 3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 520-0882 www.harborfreight.com...