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Chain Saws

Greenlee / A Textron Company

4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

10

Chain Saw Basics  

(cont’d)

CUTTING TECHNIQUES

Pruning

Pruning is the process of cutting limbs or small 

branches off of a tree. Whenever possible, prune lower 

branches first so that higher branches have a clear fall 

path. 
When pruning, the compression is along the bottom of 

the limb or branch. Make the first cut at the bottom, and 

final cut at the top of the branch.

Felling

Felling refers to cutting a tree down. Felling a tree 

consists of two cuts — a notch cut and a felling cut.
Begin by planning the direction of fall. Make the first 

cut — the notch cut — from the direction in which you 

want the tree to fall. After making the notch cut, remove 

the wedge-shaped piece of wood from the notch.
On the other side of the trunk, begin the felling cut 

approximately two inches above the bottom of the 

notch. Keeping two escape routes in mind, proceed with 

the felling cut. Do not cut completely through — leave 

approximately 1/10 of the diameter of the trunk to act as 

a hinge. This hinge will help to control the direction of fall.

Figure 10  –  Felling

Felling Cut

Notch Cut

45°

1/10

1/4

Limbing

Limbing is cutting limbs and branches from a fallen 

tree. Keep in mind that the trunk might shift as limbs are 

removed from it.
Remove limbs from the upper side of the trunk only. 

Then proceed to Bucking. 

Bucking

Bucking refers to cutting the fallen tree into short 

sections. Make the first bucking cut on the compression 

side, and make the second cut on the tension side.  

Be aware that the section may fall in an unexpected 

direction when the cut is complete.

Sectioning

Sectioning is a method of bucking a fallen tree that is too 

large for a single pass of the saw. See the illustrations 

below.
As always, make the first cuts on the compression side. 

Make the final cut on the tension side.

Figure 11  –  Sectioning

1

2

3

4

Make last

cut from

tension side.

Summary of Contents for Fairmont 49565

Page 1: ...tions and safety information in this manual before operating or servicing this tool 99931036 REV 3 2007 Greenlee Textron Inc 12 07 HCS513 49600 HCS816 49566 HPS513 49565 HCS820 49603 HCS516 49601 HCS8...

Page 2: ...ages resulting from misapplication or misuse of its products Super Spool is a trademark of Greenlee Textron Loctite and 242 are registered trademarks of Loctite Corporation KEEP THIS MANUAL Table of C...

Page 3: ...d proper personal protective equipment Failure to observe this warning could result in severe injury or death Skin injection hazard Oil under pressure easily punctures skin causing serious injury gan...

Page 4: ...t in serious injury Keep the handles clean dry and free of hydraulic fluid Maintain a firm grip on tool using both hands with thumbs and fingers encircling the handles at all times Serious injury can...

Page 5: ...act with hydraulic oil In case of accidental skin contact with hydraulic oil wash the affected area immediately to remove the oil Failure to observe these precautions can result in injury Vibration ha...

Page 6: ...2 3 4 5 6 9 7 14 13 12 1 2 5 6 3 4 8 10 11 7 9 12 14 Parts of the Chain Saws 1 Bar 2 Chain 3 Shroud 4 Front Handle 5 Control Handle 6 Trigger Actuator 7 Trigger 8 Trigger Spool 9 Lower Handle 10 Tank...

Page 7: ...when the blade at the bottom of the bar is doing the cutting If the blade is suddenly pinched in the cut or if it contacts a foreign object such as a nail the saw may be suddenly and forcefully pulled...

Page 8: ...hat small diameter limbs or branches are more likely to catch the blade causing pull in or kickback Figure 6 Verify that the chain is sharp and properly tensioned Do not allow the guide bar tip to con...

Page 9: ...all into a roadway strike a nearby building contact nearby power lines etc If the tree is on an incline work uphill from the fall path A tree or branch might tend to bounce or roll downhill Plan and c...

Page 10: ...above the bottom of the notch Keeping two escape routes in mind proceed with the felling cut Do not cut completely through leave approximately 1 10 of the diameter of the trunk to act as a hinge This...

Page 11: ...1 1 2 2 2 2 1 3 3 3 3 Remove screws from mount plate 4 Set the handle to the new handle orientation Position 1 Horizontal Position 2 30 Position 3 60 5 Apply a small amount of thread locking and seal...

Page 12: ...ters and Hoses Hose Connections Tool Port Identification One of three methods is used to identify the pressure and tank ports of Fairmont tools Match your tool to this table Pressure Port Tank Port P...

Page 13: ...e when handling the saw Hot surfaces can cause serious burns Failure to observe this warning could result in severe injury or death Before operating the saw read and understand the following explana t...

Page 14: ...njury Check the operation of the automatic oiler fre quently See Checking and Setting the Automatic Chain Oiler in this manual Check the chain frequently for proper tension and sharpness Tension and s...

Page 15: ...racks wear or damage Replace if necessary 5 Install dust caps over the hydraulic ports when the tool is disconnected Monthly 1 Perform a thorough inspection of the hydraulic hoses and fittings as desc...

Page 16: ...Tension Figure 18 Proper Chain Tension Approx 4 4 Newtons 2 lb Approx 3 2 mm 1 8 Adjusting Chain Tension 1 Loosen the two bar flange nuts 2 Turn the saw chain tension adjusting screw until the proper...

Page 17: ...or damaged See Figure 20 6 Use the mark made in Step 1 to install the bar upside down so that the bar will wear evenly 7 Install the chain as shown in Figure 21 Adjust the tension of the chain as des...

Page 18: ...025 5 32 HCS516 50482661 325 058 60 60 25 90 025 5 32 HCS520 90551893 325 058 60 60 25 90 025 5 32 HCS816 50419600 3 8 050 85 60 30 90 030 3 16 HCS820 90551915 3 8 050 85 60 30 90 030 3 16 HCS824 9055...

Page 19: ...auge setting of the chain manufacturer This is important for maximum performance throughout the saw chain s life as well as for protection against kickback Figure 23 Rounding Off Depth Gauges Filing C...

Page 20: ...c fluid viscosity Use hydraulic fluid with the correct viscosity See the Specifications and Parts manual Tool operates slowly or erratically Hydraulic fluid cold Allow fluid to warm to the operat ing...

Page 21: ...Bar Maintenance If excessively worn replace guide bar Tool feels hot Hydraulic fluid level low Check the fluid level Check system for leaks Incorrect hydraulic fluid viscosity Use hydraulic fluid wit...

Page 22: ...397 1865 Canada 800 435 0786 Fax 800 524 2853 International 1 815 397 7070 Fax 1 815 397 9247 4455 Boeing Drive Rockford IL 61109 2988 USA 815 397 7070 An ISO 9001 Company Greenlee Textron Inc is a su...

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