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56938 56937

Visit our website at: http://www.harborfreight.com

Email our technical support at: [email protected]

Battery and charger sold separately

BRUSHLESS

CHAINSAW

40V 

LITHIUM

56937

56938

80V 

LITHIUM

18"

16"

Owner’s Manual & Safety Instructions

Save This Manual

 

Keep this manual for the safety warnings and precautions, assembly, 

operating, inspection, maintenance and cleaning procedures.  Write the product’s serial number in the 
back of the manual near the assembly diagram (or month and year of purchase if product has no number). 
Keep this manual and the receipt in a safe and dry place for future reference. 

19l

When unpacking, make sure that the product is intact 

and undamaged.  If any parts are missing or broken, 

please call 1-888-866-5797 as soon as possible.

Copyright

©

 2019 by Harbor Freight Tools

®

.  All rights reserved.  

No portion of this manual or any artwork 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.

Read this material before using this product. 
Failure to do so can result in serious injury. 
SAVE THIS MANUAL.

Summary of Contents for 56937

Page 1: ...nd the receipt in a safe and dry place for future reference 19l When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon...

Page 2: ...resses practices not related to personal injury iMpOrtant SaFEty inFOrMatiOn General power tool Safety Warnings read all safety warnings and all instructions Failure to follow the warnings and instruc...

Page 3: ...at the rate for which it was designed 2 Do not use the power tool if the trigger does not turn it on and off Any power tool that cannot be controlled with the Trigger is dangerous and must be repaire...

Page 4: ...nded For example do not use chain saw for cutting plastic masonry or non wood building materials Use of the chain saw for operations different than intended could result in a hazardous situation 13 Da...

Page 5: ...at is suitable for one type of battery pack may create a risk of fire when used with another battery pack 4 Use power tools only with specifically designated battery packs Use of any other battery pac...

Page 6: ...us system disorders diabetes or Raynaud s Disease should not use this tool If you feel any symptoms related to vibration such as tingling numbness and white or blue fingers seek medical advice as soon...

Page 7: ...ip contact can cause the guide bar to move suddenly upward and backward which can cause serious injury WARNING marking concerning Risk of Loss of Control Do not operate the chainsaw with only one hand...

Page 8: ...iOn section at the beginning of this manual including all text under subheadings therein before set up or use of this product note For additional information regarding the parts listed in the followin...

Page 9: ...top the Chainsaw and Chain in the event of kickback If kickback occurs this safety feature is activated when the operator s hand strikes the Hand Guard Chain Brake Lever and pushes it forward stopping...

Page 10: ...Cover Nuts then remove the Drive Cover from the Saw 4 Place the Saw Chain over the Guide Bar The cutters of the Saw Chain must face away from the Chainsaw along the top edge of the Guide Bar Fit the D...

Page 11: ...g the Chain Guide Bar by hand 5 There should be no sagging between the Guide Bar and Saw Chain on the underside of the Guide Bar Figure D checking Saw chain tension adjusting Saw chain tension 1 Loose...

Page 12: ...rein before set up or use of this product charging Battery pack Charge Battery Pack before using this tool Follow instructions included with Battery Charger both sold separately installing and removin...

Page 13: ...ainsaw will not operate unless the Hand Guard Chain Brake Lever is in the disengaged position 4 Grasp the Handles with both hands Always grip the handle with the thumb and fingers encircling the handl...

Page 14: ...nails staples and wire from the tree Felling Direction Danger Zone Danger Zone Escape route Escape route Figure i Escape routes notching undercut Make the notch 1 3 the diameter of the tree perpendic...

Page 15: ...rtant to make sure your footing is firm and your weight is evenly distributed on both feet When possible the log should be raised and supported by the use of limbs logs or chocks Follow the simple dir...

Page 16: ...1st cut overbuck 1 3 diameter to avoid splintering Figure n Log Supported Both Ends When bucking on a slope always stand on the uphill side of the log as illustrated in Figure O When cutting through t...

Page 17: ...e the Guide Bar when bent cracked or when the Saw Chain moves excessively from side to side on the Guide Bar due to wear Refer to Chain Guide Bar Care on page 18 WarninG replace the Saw chain and Guid...

Page 18: ...Figure r normal Guide Bar If the ruler is flush with the Guide Bar and Saw Chain or the Chain tilts to one side then the Bar is worn and needs to be replaced ruler Worn Guide Bar tilting Saw chain Fi...

Page 19: ...r and or Chain damaged 3 Gear train failure 1 Adjust Saw Chain tension 2 Inspect Guide Bar and Chain for damage Replace Guide Bar and Chain if necessary 3 Have qualified technician service tool Motor...

Page 20: ...49 Tension Assembly 1 50 Spring 1 51 Shaft Sleeve 1 52 Retaining Ring 1 53 Oil Pump Assembly 1 54 Circlip 1 55 Chain Retaining Bracket 1 56 Wrench 1 parts Lists and Diagrams pLEaSE rEaD tHE FOLLOWinG...

Page 21: ...Page 21 For technical questions please call 1 888 866 5797 Item 56938 56937 SaFEty OpEratiOn MaintEnancE SEtup 56937 assembly Diagram...

Page 22: ...ring 2 21 Trigger 1 22 Oil Pump Assembly 1 23 Compression Spring 1 part Description Qty 24 Battery Pack Connection Socket 1 25 Trigger Lockout 1 26 Motor 1 27 Top Cover 1 28 Screw St4 2x16 10 29 Screw...

Page 23: ...Page 23 For technical questions please call 1 888 866 5797 Item 56938 56937 SaFEty OpEratiOn MaintEnancE SEtup 56938 assembly Diagram...

Page 24: ...usion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLU...

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