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Harbor Freight Tools 66908 Set Up And Operating Instructions Manual

16"/18" 37cc/45cc gas chain saw
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16" 37cc gas chain saw
18" 45cc gas chain saw
set up and Operating instructiOns
Visit our website at: http://www.harborfreight.com
read this material before using this product.
Failure to do so can result in serious injury.
saVe this ManuaL.
©
Copyright
2009 by Harbor Freight Tools
contained herein may be reproduced in any shape 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.
For technical questions or replacement parts, please call 1-800-444-3353.
Manual Revised 09j
66908
66909
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.
®
. All rights reserved. No portion of this manual or any artwork
Only use Outside
and far away from
windows, doors, and
vents.

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Summary of Contents for Harbor Freight Tools 66908

  • Page 1 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.

  • Page 2: Table Of Contents

    - sKu cOntents 66908 16” 37cc chain saw ... 26 iMpOrtant saFetY parts List FOr sKu 66909 inFOrMatiOn ......3 18” 45cc gas chain saw ..28 generaL pOwer tOOL saFetY warnings....... 3 parts List FOr sKu 66909 VibratiOn saFetY ......

  • Page 3: Important Safety Information

    Page 3 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 4 Have defective switches replaced by off the switch, the guide bar and saw authorized service center. chain to the rear. REV 09j Page 4 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 5 EVEN IF doors and windows are contact a log, branch, ground or open. other obstruction. Don’t cut above shoulder height. Use devices such as low kickback chain, guide bar nose guards, chain Page 5 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 6 These carry important safety create sparks that can start fires information. If unreadable or missing, around dry vegetation. contact Harbor Freight Tools for a A spark arrestor may be required. replacement. The operator should contact local fire agencies for laws or Avoid unintentional starting.

  • Page 7: Vibration Safety

    Pregnant women or people who have impaired blood circulation Page 7 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 8: Specifications

    66908 16” 37cc sKu 66909 18” 45cc Type 2 Stroke, air cooled Type 2 Stroke, air cooled Engine Rating 1.6 horsepower Engine Rating 2.4 horsepower Start Recoil Start Recoil Compression 150 PSI Compression 150 PSI Displacement 37.2 cc...
  • Page 9 LeFt bLanK. Page 9 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 10: Chain Saw Components

    Nose Choke Power Switch Prime Valve Fuel Cap Bucking Spike Chain & Bar Oil Cap Starter Cord Figure 1 - Model 66908 16” 37cc chain saw Front Loop Handle Chain Brake Starter Access to Access to Cord Spark Plug Spark Plug &...

  • Page 11: Main Controls

    Guide Bar. section at the beginning of this manual including all text under subheadings therein before set up or use of this product. REV 09j Page 11 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 12 Bar. Repeat the above adjusting steps if needed to achieve the correct Cover and gently shake to thoroughly tension. mix before each fueling. Refer to the REV 09j Page 12 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 13: General Operating Instructions

    Unleaded Gasoline Engine Oil (90 Octane) starting procedure 40:1 3.2 Fl. Oz. 1 Gal. For Model 66908 only, push the 40:1 6.4 Fl. Oz. 2 Gal. Prime Valve 5 times. Figure 3 Pull out the Choke. Once the proper fuel mix is obtained,...

  • Page 14: Basic Felling, Limbing, And Bucking Cut Techniques

    (not included) to avoid grabbing and throw back. When finished cutting, release the Throttle Trigger and Throttle Lockout and turn off the Power Switch. REV 09j Page 14 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 15 When making a notching undercut, make the notch 1/3 the diameter of the tree, perpendicular to the direction of the fall. Make the lower horizontal notching cut first. This will Page 15 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 16 Allow the Saw to pull forward into the top of the log until the Bucking Spike catches on the log. Then pivot the saw through the log. Page 16 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 17: Maintenance And Servicing

    Saw Chain tool off before performing any moves excessively from side to side inspection, maintenance, or on the Guide Bar. cleaning procedures. REV 09j Page 17 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 18 Figure 12 listed in the Specifications Chart. Place a ruler along the surface of the Guide Bar and Saw Chain. If there is a gap, the bar is normal. REV 09j Page 18 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 19 Flip the Guide Bar over before mounting the new Saw Chain. This Nuts will ensure that the Guide Bar wears evenly over time. (For Model # 66908 Drive Cover only, line up the Tensioning Pin with Mounting the hole in the Guide Bar when fitting Bolt Holes the Guide bar in place).
  • Page 20 Fuel Filter replacement Replace the Air Filter and Cover and warning! tO preVent secure the Knob in place. seriOus injurY FrOM Fire: REV 09j Page 20 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 21: Cleaning, Maintenance, And Lubrication Schedule

    * Have serviced by a qualified repair technician. note: These procedures are in addition to the regular checks and maintenance explained as part of the regular REV 09j Page 21 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 22: Storage

    COMPReSSION ReLATeD: COMPReSSION ReLATeD: Loose spark plug. Tighten spark plug. Follow all safety precautions whenever diagnosing or servicing the equipment or engine. REV 09j Page 22 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 23 Replace worn or damaged Saw Chain. Saw Chain depth guides improperly File down according to set. manufacturer’s recommendations. Follow all safety precautions whenever diagnosing or servicing the equipment or engine. Page 23 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 24: Parts List For Sku 66908 16" 37Cc Gas Chain Saw

    List FOr sKu 66908 16” 37cc gas chain saw part description part description Nut M5 Fuel Cap Retainer Spring Washer 5 Fuel Cap O-Ring Washer 5 Fuel Cap Silencer Cap Oil Cap Silencer Oil Cap Packing Washer Silencer Gasket Screw St 4.8 x 25...

  • Page 25: (Cont.)

    List FOr sKu 66908 16” 37cc gas chain saw (cont.) part description part description Tightener Screw M5*48 Heavy Block Tube Tightener Heavy Block Gasket Heavy Block Torsion Rod Spring Screw Aym8-M8x28 Secondary Pull-Rod Protecting Shield Main Pull-Rod Handle Base...

  • Page 26: Assembly Diagram - Sku 66908 16" 37Cc Chain Saw

    - sKu 66908 16” 37cc chain saw Page 26 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 27 LeFt bLanK. REV 09j Page 27 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 28: Parts List For Sku 66909 18" 45Cc Gas Chain Saw

    Conical Spring Base Right Crankshaft Case Conical Spreader Spring Backing Board Idle Adjusting Guide Air Intake Tube Support Screw St4.8x16 Air Intake Tube Support Gasket Front Loop Handle Assembly Page 28 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 29: Parts List For Sku 66909 18" 45Cc Gas Chain Saw

    Secondary Pull-Rod Filter Main Pull-Rod Balancer Rubber Supporting Block Balancer Body Fuel Tube Chain Fuel Tube Base Guide Bar Sheath Fuel Filter Components Tightener Tightening Screw Tightening Gear Page 29 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 30: Assembly Diagram - Sku 66909 18" 45Cc Chain Saw

    - sKu 66909 18” 45cc chain saw Page 30 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 31: Assembly Diagram - Sku 66909 18" 45Cc Chain Saw

    - sKu 66909 18” 45cc chain saw Page 31 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 32: Assembly Diagram - Sku 66909 18" 45Cc Chain Saw

    - sKu 66909 18” 45cc chain saw Page 32 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 33 LeFt bLanK. REV 09j Page 33 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

  • Page 34: Emission Control System Warranty

    Service department at the number below to make shipping arrangements. The warranty repairs should be completed in a reason- able amount of time, not to exceed 30 days. If you have any questions regarding your warranty rights and responsibilities, you should contact the Harbor Freight Tools Cus- tomer Service Department at 1-800-444-3353.
  • Page 35 Exhaust pipe stud. Muffler. iii) Catalytic converter (if so equipped). Miscellaneous items used in above systems Vacuum, temperature and time sensitive valves and switches. Hoses, belts, connectors, and assemblies. Page 35 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.
  • Page 36 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. Page 36 SKU 66908 / 66909 For technical questions, please call 1-800-444-3353.

This manual is also suitable for:

66909

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