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11

English (Original Instructions)

PROPER PROCEDURE FOR TREE FELLING

See figure 28 - 31.

1.  Pick your escape route (or routes in case the intended 

route is blocked). Clear the immediate area around the 

tree and make sure there are no obstructions in your 

planned path of retreat. Clear the path of safe retreat 

approximately 135° from the planned line of fall (A).

2.  Consider the force and direction of the wind, the lean 

and balance of the tree, and the location of large limbs. 

These things influence the direction in which the tree 

will fall. Do not try to fell a tree along a line different 

from its natural line of fall (B).

3.  Cut a notch about 1/3 the diameter of the trunk in 

the side of the tree (C). Make the notch cuts so they 

intersect at right angles to the line of fall. This notch 

should be cleaned out to leave a straight line. To keep 

the weight of the wood off the saw, always make the 

lower cut of the notch before the upper cut.

4.  Make the back-cut (D) level and horizontal, and at a 

minimum of 2 inches (5 cm) above the horizontal cut 

of the notch.

NOTE:

 Never cut through to the notch. Always leave 

a band of wood between the notch and back cut 

(approximately 2 inches (5 cm) or 1/10 the diameter of 

the tree). This is called a “hinge” or “hingewood” (E). 

It controls the fall of the tree and prevents slipping or 

twisting or shooting-back of the tree off the stump.
On large diameter trees, stop the back cut before it is 

deep enough for the tree to either fall or settle back on 

the stump. Then insert soft wooden or plastic wedges 

(F) into the cut so they do not touch the chain. Drive 

wedges in, little by little, to help jack the tree over.

5.  As tree starts to fall, stop the chainsaw and put it down 

immediately. Retreat along the cleared path, but watch 

the action in case something falls your way.

 WARNING

Never cut through to the notch when making a back cut. 

The hinge controls the fall of the tree, this is the section 

of wood between the notch and backcut.

REMOVING BUTTRESS ROOTS

See figure 32.

A buttress root is a large root extending from the trunk of 

the tree above the ground. Remove large buttress roots 

prior to felling. Make the horizontal cut (A) into the buttress 

first, followed by the vertical cut (B). Remove the resulting 

loose section (C) from the work area. Follow the correct 

tree felling procedure after you have removed the large 

buttress roots. Refer to “Operation – Proper Procedure for 

Tree Felling” earlier in this manual.

BUCKING

See figure 33.

Bucking is the term used for cutting a fallen tree to the 

desired log length.

 

Cut only one log at a time.

 

Support small logs on a sawing stand or another log 

while bucking.

 

Keep a clear cutting area. Make sure that no objects 

can contact the guide bar nose and chain during 

cutting, this can cause kick-back (A).

 

During bucking operations, stand on the uphill side so 

that the cut-off section of the log cannot roll over you.

 

Sometimes it is impossible to avoid pinching (with 

just standard cutting techniques) or difficult to predict 

which way a log will settle when cut.

BUCKING WITH A WEDGE

See figure 34.

If the wood diameter is large enough for you to insert a soft 

bucking wedge (B) without touching the chain, you should 

use the wedge to hold the cut open to prevent pinching.

BUCKING LOGS UNDER STRESS

See figure 35.

(D) Log supported at one end.
(C) Log supported at both ends.

Make the first bucking cut (E) 1/3 of the way through the 

log and finish with a 2/3 cut (F) on the opposite side. As 

you cut the log, it will tend to bend. The saw can become 

pinched or hung in the log if you make the first cut deeper 

than 1/3 of the diameter of the log.
Give special attention to logs under stress (G) to prevent 

the bar and chain from pinching.

OVERBUCKING

See figure 19.

Begin from the top side of the log with the bottom of the 

saw against the log; exert light pressure downward. Note 

that the saw will tend to pull away from you (A).

UNDERBUCKING

Begin from the under side of the log with the top of the 

saw against the log; exert light pressure upward. During 

underbucking, the saw will tend to push back at you (B). 

Be prepared for this reaction and hold the saw firmly to 

maintain control.

LIMBING AND PRUNING

See figure 36.

 

Work slowly, keeping both hands on the saw with a 

Содержание RCS5145N

Страница 1: ...RCS5145N PETROL CHAINSAW Important It is essential that you read the instructions in this manual before assembling maintaining and operating this machine...

Страница 2: ...g how your saw works Do not operate a chainsaw that is damaged improperly adjusted or not completely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is...

Страница 3: ...trained to do so Beware of the emission of exhaust gases lubricant mist and saw dust This product is very noisy when operating to prevent long term hearing damage wear hearing protection and keep othe...

Страница 4: ...aw chain 7 Use only replacement bars and chains specified by the manufacturer or the equivalent NOTE Refer to Operation in this manual for information on kick back and how to avoid serious personal in...

Страница 5: ...hain brake ON Squeeze and release throttle Mix the fuel mix thoroughly and also each time before refueling Add bar and chain oil to the bar and chain reservoir every time that fuel is added to the cha...

Страница 6: ...Chain type 0 325 low profile full complement Drive sprocket 7 teeth x 0 325 Engine displacement 51 cm3 Maximum engine power ISO 7293 2 0 kW Recommended maximum engine speed with cutting attachment 11...

Страница 7: ...n of the tip of the guide bar or when the wood closes in and pinches the saw chain in the cut Contact at the upper portion of the tip of the guide bar may cause the chain to dig into the object and st...

Страница 8: ...synthetic 2 stroke lubricant only Mix 2 lubricant into the petrol This is a 50 1 ratio Mix the fuel thoroughly and also each time before refuelling Mix in small quantities Do not mix quantities large...

Страница 9: ...NG A WARM ENGINE Follow the instructions for starting a cold engine steps 1 8 but do not attempt to start in the full choke position skip step 5 Push and release primer bulb 10 times Pull the choke ou...

Страница 10: ...cut for you exert only light downward pressure Forcing the cut could result in damage to the bar chain or engine 6 Release the throttle trigger as soon as the cut is completed allowing the engine to...

Страница 11: ...ng the right hand side from operator s position of the chain brake lever hand guard and pull towards the front handle until you hear a click FELLING TREES HAZARDOUS CONDITIONS See figure 27 WARNING Do...

Страница 12: ...t is a large root extending from the trunk of the tree above the ground Remove large buttress roots prior to felling Make the horizontal cut A into the buttress first followed by the vertical cut B Re...

Страница 13: ...DANGER Never start the engine before installing the guide bar chain drivecase cover and clutch drum Without all these parts in place the clutch can fly off or explode exposing the user to possible se...

Страница 14: ...ntly and tension as required CAUTION A chain tensioned while warm may be too tight upon cooling Check the Adjusting the chain tension before next use CHAIN MAINTENANCE See figure 51 52 WARNING Check t...

Страница 15: ...iled check the depth gauge clearance Use a flat file B not provided and a depth gauge jointer C not provided to lower all gauges uniformly Use a 0 6 mm 0 025 inch depth gauge jointer After lowering ea...

Страница 16: ...THE ENGINE See figure 66 67 Clean the engine fins and flywheel fins with compressed air or a brush periodically Dangerous overheating of the engine may occur due to impurities on the engine WARNING Ne...

Страница 17: ...stale and leave varnish and gum in the fuel system 3 Drain all bar and chain lubricant from tank into a container approved for lubricant 4 Clean all foreign material from the saw 5 Store it in a well...

Страница 18: ...ettor adjustment Engine starts but will not run properly at high speed Carburettor requires H High jet adjustment Contact a service dealer for carburettor adjustment Engine does not reach full speed a...

Страница 19: ...s on the guide bar contact a service dealer Bar and chain running hot and smoking Chain brake engaged Release chain brake refer to Operation operating chain brake earlier in this manual Chain tension...

Страница 20: ...tronic Industries Australia Pty Ltd Level 1 660 Doncaster Road Doncaster VIC 3108 Australia Techtronic Industries New Zealand Ltd 18 26 Amelia Earhart Avenue Mangere Auckland 2022 New Zealand 96043901...

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